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Ryan PC, Ching IC, Ierulli VK, Pickett K, Mulcahey MK. Fear of Reinjury, Psychological Factors, and Sport Played Have Negative Impact on Return to Sport Following Medial Patellofemoral Ligament Reconstruction for Patellar Instability. Arthroscopy 2024:S0749-8063(24)00399-2. [PMID: 38849062 DOI: 10.1016/j.arthro.2024.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 05/06/2024] [Accepted: 05/12/2024] [Indexed: 06/09/2024]
Abstract
PURPOSE To analyze factors that affect return to sport after medial patellofemoral ligament reconstruction (MPFLR), such as psychological factors, sport played, and a positive apprehension test following surgery, and to determine the average return to sport rates and time to return to sport. METHODS A literature search was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Included studies met the following criteria: patients underwent MPFLR for patellar instability, return to sport was recorded, and a factor that affected return to sport was mentioned. Search terms included medial patellofemoral ligament, tibial tubercle osteotomy, tibial tubercle transfer, return to play, and return to sport. RESULTS Eighteen of 632 identified studies met inclusion criteria, and 1,072 patients who underwent MFPLR were recorded. Return-to-sport rates and mean/median time ranged from 60.0% to 100% and 3 to 10.4 months, respectively. Of the patients, 55.6% to 84.0% returned to sport without decreasing the level of competition. Six of 12 studies (50.0%) reported fear of reinjury as the top reason for patients not returning or returning at a lower level of sport. Volleyball/handball had the lowest return to the same level following surgery (18.2%-50.0%). CONCLUSIONS Athletes who underwent MPFLR following recurrent patellar instability returned to sport at a range of 60.0% to 100%. Return to sport at the same level or higher was found to have a lower maximum rate at 55.6% to 84.0%. Fear of reinjury and sport played were found to have a substantial impact on ability to return to sport. Surgeons can use this information to advise patients on expectations following surgery. LEVEL OF EVIDENCE Level IV, systematic review of Level III and IV studies.
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Affiliation(s)
- Patrick C Ryan
- Tulane University School of Medicine, New Orleans, Louisiana, U.S.A
| | - Idaleen C Ching
- Tulane University School of Medicine, New Orleans, Louisiana, U.S.A
| | - Victoria K Ierulli
- Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, Louisiana, U.S.A
| | - Keith Pickett
- Rudolph Matas Library of the Health Sciences, Tulane University School of Medicine, New Orleans, Louisiana, U.S.A
| | - Mary K Mulcahey
- Department of Orthopedic Surgery and Rehabilitation, Loyola University Medical Center, Maywood, Illinois, U.S.A..
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Mao Y, Li J, Li Y, Zhu J, Xiong Y, Li J. A Combined Surgical Approach for Recurrent Patellar Dislocation in Adolescents With Patella Alta and Increased Tibial Tuberosity-Trochlear Groove Distance: Improved Clinical Outcomes but Decreased Posterior Tibial Slopes in Skeletally Immature Patients at Minimum 4-Year Follow-Up. Arthroscopy 2024; 40:1529-1540. [PMID: 37714440 DOI: 10.1016/j.arthro.2023.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/01/2023] [Accepted: 09/02/2023] [Indexed: 09/17/2023]
Abstract
PURPOSE (1) To report the clinical and radiological outcomes of a surgical technique combining anatomic medial patellofemoral ligament reconstruction and tibia tuberosity transfer in adolescents with patella alta and elevated tibial tuberosity-trochlear groove (TT-TG) distance in the treatment of recurrent patellar dislocation; and (2) to investigate the potential risks of growth arrest or developmental deformities associated with this combined technique. METHODS Medical records of patients who underwent the combined surgery from 2015 to 2019 were reviewed. This study included adolescents aged between 14 and 18 years with a Caton-Deschamps index (CDI) > 1.30 and TT-TG distance >20 mm, with a minimum follow-up of 4 years. Radiological examinations including lateral views and full-length posteroanterior standing radiographs were investigated to assess patella height by CDI, posterior tibial slope (PTS) angle, side-to-side difference in bone length, and lower extremity alignment by hip-knee-ankle angle; computed tomography scans and magnetic resonance imaging profiles were investigated to evaluate TT-TG distance and staging of growth plate closure. Other evaluations included preoperative and postoperative physical examination, Kujala score, and Tegner activity score. The patients were stratified into 3 subgroups according to an magnetic resonance imaging-based staging system of the growth plate closure, and each outcome was analyzed. A cohort-specific minimal clinically important difference estimation was performed using standard error of measurement. RESULTS The average age at the time of surgery was 16.1 years (range, 14.1-17.8). The average follow-up was 5.6 years (range, 4.0-7.6). No recurrent dislocation occurred, and no clinically significant deformity or axis deviation was encountered. Postoperative patellar height by CDI was 1.00 ± 0.11 (range, 0.81-1.15). No significant differences were found in the preoperative and postoperative hip-knee-ankle angle or side-to-side difference in femur/tibia length among all subgroups. A significantly decreased PTS angle was found in patients with open growth plates, from 10.2° ± 1.7° before surgery to 8.1° ± 1.0° after surgery (P = .015). The Kujala score and Tegner score both significantly improved, from 65.5 ± 13.9 before surgery to 90.4 ± 7.2 after surgery in the Kujala score (P < .001) and from 4.0 ± 1.1 before surgery to 4.7 ± 1.3 after surgery in the Tegner score (P < .001). Of the whole cohort, 63.1%, 100%, 47.1%, and 94.1% of patients achieved the minimal clinically important difference for PTS angle, CDI, Tegner score, and Kujala score, respectively. CONCLUSIONS This combined technique is safe and effective in treating recurrent patellar dislocation in skeletally mature adolescents with concurrent patella alta (CDI > 1.30) and TT-TG distance >20 mm, permitting patients to have improved knee function and low complication rates. Nonetheless, patients with open growth plates demonstrated a decrease in PTS, which might predispose the knee to recurvatum and osteoarthritis in the long term. LEVEL OF EVIDENCE Level IV, controlled case series.
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Affiliation(s)
- Yunhe Mao
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Junqiao Li
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Yinghao Li
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Jianwei Zhu
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China
| | - Yan Xiong
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China; Department of Orthopedics, Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China
| | - Jian Li
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, PR China; Department of Orthopedics, Sports Medicine Center, West China Hospital, Sichuan University, Chengdu, PR China.
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Wang S, Cao G, Shi X, Wang X, Yu J, Tan H. Reconstruction of the medial patellofemoral ligament through a double bundle of a single patellar tract and quadriceps tendons combined with medial displacement of lateral hemi-tibial tuberosity for treating low-grade recurrent patella dislocation. INTERNATIONAL ORTHOPAEDICS 2024; 48:913-922. [PMID: 38342822 DOI: 10.1007/s00264-024-06105-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/20/2024] [Indexed: 02/13/2024]
Abstract
PURPOSE The present study aimed to assess the clinical efficacy and imaging results of reconstruction of the medial patellofemoral ligament through a double bundle of single patellar tract and quadriceps tendons combined with medial displacement of lateral hemi-tibial tuberosity for treating low-grade recurrent patella dislocation. METHODS Twenty-three patients with recurrent patellar dislocation, including ten males and 13 females, with 23 knee joints were enrolled according to the relevant criteria. Reconstruction of the medial patellofemoral ligament was performed through a double bundle of a single patellar tract and quadriceps tendons combined with medial displacement of lateral hemi-tibial tuberosity. Knee function was evaluated using visual analog scale (VAS) score, International Knee Documentation Committee (IKDC) score, Lysholm score, Tegner score, and Kujala score at pre- and postoperative stages. Patellar stability was assessed by CT scans measuring tibial tuberosity-trochlear groove (TT-TG) distance, lateral patella displacement (LPD), congruence angle (CA), and patellar tilt angle (PTA). RESULTS All 23 patients were effectively followed up for 13-28 months (mean: 21.91 ± 4.14 months). At the last follow-up, the postoperative VAS score, IKDC score, Lysholm score, Tegner score, and Kujala score of 23 patients were 1.13 ± 0.82, 87.35 ± 3.17, 90.22 ± 1.28, 4.35 ± 0.65, and 89.26 ± 1.96, respectively, as compared to the preoperative values of 5.91 ± 1.13, 30.96 ± 5.09, 30.30 ± 2.98, 1.26 ± 0.62, and 27.87 ± 3.46, respectively, and these differences were statistically significant (P < 0.001). At the last follow-up, the postoperative TT-TG, LPD, CA, and PTA values of the 23 patients were 8.80 ± 1.85 mm, 6.01 ± 1.77 mm, 11.32 ± 6.18°, and 9.35 ± 2.88°, respectively, compared to the preoperative values of 18.77 ± 1.74 mm, 14.90 ± 4.07 mm, 37.82 ± 5.71°, and 23.58 ± 3.24°, respectively, and the differences were statistically significant (P < 0.001). No relevant complications were observed in the 23 patients. CONCLUSIONS Reconstruction of the medial patellofemoral ligament through a double bundle of a single patellar tract and quadriceps tendons combined with medial displacement of lateral hemi-tibial tuberosity for treating low-grade recurrent patella dislocation showed satisfactory medium-term efficacy, and further investigations are required to confirm the long-term efficacy of this approach.
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Affiliation(s)
- Shengrui Wang
- Henan University of Chinese Medicine, Henan Province, Zhengzhou, People's Republic of China
| | - Guorui Cao
- Department of Knee Injury, Luoyang Orthopedic-Traumatological Hospital of Henan Province (Henan Provincial Orthopedic Hospital), 82# Qimingnan RoadHenan Province, Luoyang, 471002, People's Republic of China
| | - Xiaotao Shi
- Department of Knee Injury, Luoyang Orthopedic-Traumatological Hospital of Henan Province (Henan Provincial Orthopedic Hospital), 82# Qimingnan RoadHenan Province, Luoyang, 471002, People's Republic of China
| | - Xiao Wang
- Department of Knee Injury, Luoyang Orthopedic-Traumatological Hospital of Henan Province (Henan Provincial Orthopedic Hospital), 82# Qimingnan RoadHenan Province, Luoyang, 471002, People's Republic of China
| | - Jinyang Yu
- Department of Knee Injury, Luoyang Orthopedic-Traumatological Hospital of Henan Province (Henan Provincial Orthopedic Hospital), 82# Qimingnan RoadHenan Province, Luoyang, 471002, People's Republic of China
| | - Honglue Tan
- Department of Knee Injury, Luoyang Orthopedic-Traumatological Hospital of Henan Province (Henan Provincial Orthopedic Hospital), 82# Qimingnan RoadHenan Province, Luoyang, 471002, People's Republic of China.
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Hu F, Wang C, Du Y, Guo Z, Zhang K, Ma Y, Yang Y, Gong X, Wang H, Liu P, Shi W. Medial Patellofemoral Complex Reconstruction (Combined Reconstruction of Medial Patellofemoral Ligament and Medial Quadriceps Tendon-Femoral Ligament) With Semitendinosus Autograft Resulted in Similar Clinical and Radiographic Outcomes to Medial Patellofemoral Ligament Reconstruction in Treating Recurrent Patellar Dislocation. Arthroscopy 2024; 40:1264-1276.e1. [PMID: 37716628 DOI: 10.1016/j.arthro.2023.08.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 08/17/2023] [Accepted: 08/20/2023] [Indexed: 09/18/2023]
Abstract
PURPOSE To compare clinical and radiographic outcomes of medial patellofemoral ligament reconstruction (MPFL-R) and medial patellofemoral complex reconstruction (MPFC-R) for recurrent patellar dislocation. Outcome measures were compared based on the Insall-Salvati index. METHODS Patients who were diagnosed with recurrent patellar dislocation and underwent either MPFL-R or MPFC-R (combined reconstruction of MPFL and medial quadriceps tendon-femoral ligament) were retrospectively analyzed. Group allocation was based on surgical procedure and patient characteristics were collected. Clinical assessments included patient-reported outcome measures (PROMs) and return-to-sports rates. Minimal clinically important difference analysis was performed. A subgroup analysis of PROMs was carried out between patients with an Insall-Salvati index ≤1.2 versus >1.2. The patellar tilt angle, lateral patellar displacement, and bisect offset ratio were measured pre- and postsurgery. Functional failures and complications were assessed. RESULTS Overall, 70 patients (72 knees) in the MPFL-R group and 58 patients (61 knees) in the MPFC-R group were included. Patient characteristics were comparable between the groups. At a minimum follow-up of 24 (mean, 50.6 ± 22.1) months, all PROMs were substantially improved (P < .001), without significant intergroup differences. The percentages of patients reaching the minimal clinically important difference were similar after MPFL-R and MPFC-R: 98.6% versus 93.4% (International Knee Documentation Committee), 97.2% versus 98.4% (Lysholm), 98.6% versus 100% (Kujala), and 77.8% versus 72.1% (Tegner). The subgroup analysis based on patellar height and the return-to-sport rates also suggested comparable results. Radiographic evaluation demonstrated significantly smaller lateral patellar displacements (P = .004) and bisect offset ratios (P < .001) but similar patellar tilt angles after MPFC-R. Four (5.6%) patients receiving MPFL-R and 2 (3.3%) patients receiving MPFC-R reported recurrence of functional instability, without statistically significant difference. CONCLUSIONS MPFC-R resulted in similar overall clinical and radiographic outcomes to MPFL-R in treating recurrent patellar dislocation. MPFC-R might not provide additional benefits for patients with an Insall-Salvati index >1.2. LEVEL OF EVIDENCE Level IV, therapeutic, retrospective cohort study.
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Affiliation(s)
- Fengyi Hu
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Cheng Wang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Yingying Du
- Peking University Health Science Center, Beijing, China
| | - Zejing Guo
- Peking University Health Science Center, Beijing, China
| | - Keying Zhang
- Peking University Health Science Center, Beijing, China
| | - Yong Ma
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Yuping Yang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Xi Gong
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Haijun Wang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Ping Liu
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China
| | - Weili Shi
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Beijing, China.
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Runer A, Klotz S, Schneider F, Egelseer T, Csapo R, Hoser C, Abermann E, Mayr R, Raas C, Attal R, Arora R, Fink C, Liebensteiner M. Medial Patellofemoral Ligament Reconstruction Using Pedicled Quadriceps Tendon Autograft Yields Similar Clinical and Patient-Reported Outcomes but Less Donor-Site Morbidity Compared With Gracilis Tendon Autograft. Arthroscopy 2024; 40:438-445. [PMID: 37479150 DOI: 10.1016/j.arthro.2023.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 06/23/2023] [Accepted: 07/01/2023] [Indexed: 07/23/2023]
Abstract
PURPOSE To compare clinical and patient-reported outcome measures (PROMs) in patients with recurrent patellar dislocation after medial patellofemoral ligament (MPFL) reconstruction using either a gracilis tendon (GT) or quadriceps tendon autograft (QT). METHODS All MPFL reconstruction performed between 2017 and 2019 were reviewed retrospectively. Only patients with isolated MPFL reconstruction, without any major patellofemoral risk factors and a minimum follow-up of 24 months, were included in the study. Patients were matched with respect to sex, age, and body mass index. All patients were evaluated clinically and using PROMs. RESULTS A total of 64 patients with an average follow up of 28.7 ± 7.5 months were included in this study. The mean Kujala score (GT: 84.8 ± 12.9, QT: 88.9 ± 10.1), Lysholm score (GT: 89.4 ± 10.2, QT: 88.4 ± 5.0), and visual analog scale score for pain (GT: 1.9 ± 1.8, QT: 1.1 ± 1.3) did not significantly differ between both groups. Tegner activity level was significantly greater (P = .027) in the QT group (5.5 ± 1.9) compared with the GT group (4.6 ± 1.8), but within the minimal clinically important differences. Occasional patellar instability events, but no recurrent dislocation, were reported in 12.5% in the GT group and 6.3% in the QT group (P = .39). Of all patients, 90.6% in the QT and 68.8% in the HT group exceeded the PASS for the Kujala score (P = .06). Significantly more patients (59.4%) treated with GT reported donor-site morbidity in the form of sensitivity deficit at the lower leg compared with those treated with QT (3.1%, P = .001). CONCLUSIONS GT and QT MPFL reconstruction have comparable PROMs and patellar redislocation rates 2 years' postoperatively. Significantly more patients treated with GT reported lower-leg sensitivity deficit compared with those treated with QT. LEVEL OF EVIDENCE Level III, retrospective case-control study.
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Affiliation(s)
- Armin Runer
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria; Orthopaedic Sports Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany.
| | - Stefan Klotz
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Friedemann Schneider
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Tim Egelseer
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Robert Csapo
- Gelenkpunkt - Sports and Joint Surgery, Innsbruck, Austria; Centre for Sport Science and University Sports, University of Vienna, Vienna, Austria
| | - Christin Hoser
- Gelenkpunkt - Sports and Joint Surgery, Innsbruck, Austria; Private University for Health Sciences, Medical Informatics and Technology (UMIT), ISAG, Research Unit for Orthopaedic Sports Medicine and Injury Prevention, Hall in Tirol, Austria
| | | | - Raul Mayr
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Christoph Raas
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Rene Attal
- Department of Trauma Surgery and Sports Traumatology, Academic Hospital Feldkirch, LKH Feldkirch, Austria
| | - Rohit Arora
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Christian Fink
- Gelenkpunkt - Sports and Joint Surgery, Innsbruck, Austria; Private University for Health Sciences, Medical Informatics and Technology (UMIT), ISAG, Research Unit for Orthopaedic Sports Medicine and Injury Prevention, Hall in Tirol, Austria
| | - Michael Liebensteiner
- Department of Orthopaedics and Traumatology, Medical University of Innsbruck, Innsbruck, Austria; Orthopädie Knie & Fuß im Zentrum, Innsbruck, Austria
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Watrinet J, Joergens M, Blum P, Ehmann Y, Augat P, Stuby F, Schröter S, Harrer J, Fürmetz J. Tibial tuberosity-trochlear groove distance is significantly decreased by medial closing wedge distal femoral osteotomy. Knee Surg Sports Traumatol Arthrosc 2024; 32:287-294. [PMID: 38270286 DOI: 10.1002/ksa.12053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 12/20/2023] [Accepted: 12/28/2023] [Indexed: 01/26/2024]
Abstract
PURPOSE While medial closing wedge distal femoral osteotomy (MCWDFO) has been used to address patella instability combined with valgus malalignment, its impact on patellofemoral parameters remains uncharted. Hence, this study seeks to establish a three-dimensional (3D) planning of MCWDFO and measure its effect on the tibial tubercle - trochlear groove distance (TTTG) through simulation and calculation. METHODS MCWDFO with a stepwise increment of one-degree varisation (1°-15°) was performed on 3D surface models of 14 lower extremities with valgus malalignment and 24 lower extremities with neutral alignment of the lower limb, resulting in a total of 608 simulations. Anatomic landmarks were employed to measure hip-knee-ankle angle (HKA), TTTG, and femoral torsion for each simulation. A mathematical formula was adopted to calculate TTTG changes following MCWDFO, and subsequently the mean simulated and calculated TTTG values were compared. Following a standardised protocol, MCWDFO was performed without rotational changes. RESULTS MCWDFO exhibited an almost linear reduction in TTTG, at a rate of approximately -1.05 ± 0.13 mm per 1° of varisation, demonstrating a strong negative correlation (R = -0.83; p < 0.001). Limb alignment did not exert an influence on TTTG change; however, it correlated with tibial plateau width. The mean difference between the simulated and calculated TTTG values amounted to 0.03 ± 0.03 mm per 1° varisation (p < 0.001). CONCLUSION The TTTG distance is linearly reduced by 1.05 mm for every 1° of varisation within the varus correction range of 0°-15° during MCWDFO. Patients with combined valgus and patellar instability may benefit from MCWDFO due to frequently pathological TTTG. LEVEL OF EVIDENCE Level III, descriptive laboratory study.
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Affiliation(s)
- Julius Watrinet
- Department Trauma Surgery, BG Unfallklinik Murnau, Murnau, Germany
- Department of Orthopaedic Sports Medicine, Technical University, Munich, Germany
| | - Maximilian Joergens
- Department of Orthopedics and Trauma Surgery, Musculoskeletal University Center Munich (MUM), University Hospital, LMU Munich, Munich, Germany
| | - Philipp Blum
- Department Trauma Surgery, BG Unfallklinik Murnau, Murnau, Germany
| | - Yannick Ehmann
- Department of Orthopaedic Sports Medicine, Technical University, Munich, Germany
| | - Peter Augat
- Department Trauma Surgery, BG Unfallklinik Murnau, Murnau, Germany
- Insititute for Biomechanics, Paracelsus University Salzburg, Salzburg, Austria
| | - Fabian Stuby
- Department Trauma Surgery, BG Unfallklinik Murnau, Murnau, Germany
| | - Steffen Schröter
- Department of Orthopedics and Reconstructive Surgery, Diakonie Klinikum GmbH Jung-Stilling-Krankenhaus, Siegen, Germany
| | - Joerg Harrer
- Department of Orthopedics and Traumatology, Helmut-G.Walther Klinikum, Lichtenfels, Germany
| | - Julian Fürmetz
- Department Trauma Surgery, BG Unfallklinik Murnau, Murnau, Germany
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Panagopoulos A, Giannatos V, Antzoulas P, Lakoumentas J, Raoulis V, Hantes M. The 100 Top-Cited Articles on Medial Patellofemoral Ligament: A Bibliometric Analysis and Review. Orthop J Sports Med 2024; 12:23259671231223525. [PMID: 38304053 PMCID: PMC10832438 DOI: 10.1177/23259671231223525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 08/10/2023] [Indexed: 02/03/2024] Open
Abstract
Background The medial patellofemoral ligament (MPFL) has been investigated widely in the past 30 years, resulting in many research achievements in this field. Purpose To perform a comprehensive bibliometric analysis to evaluate the 100 top-cited articles on the MPFL. Study Design Cross-sectional study. Methods We searched the Scopus database in December 2022 using the terms "medial patellofemoral ligament" OR "MPFL." The search was confined to English-language articles, including technical notes, systematic reviews on clinical outcomes and/or complications, clinical studies, studies regarding complications, and basic science articles (either cadaveric or biomechanical); we excluded letters, case reports, personal opinions, guidelines, editorials, and narrative or other types of reviews. Analysis of the 100 top-cited articles was performed according to total number of citations, average citations per year (ACY), study type, country of origin, journal of publication, affiliated institution, and most published authors. Results The total number of citations was 16,358 (range of citations per article, 72-692). The majority of articles were published as clinical studies (54%), with cadaveric studies being the second most common (21%). Most studies originated in the United States (32%), with Japan (15%) and Germany (13%) following. The American Journal of Sports Medicine published the majority of the 100 top-cited articles (37/100; 6304 citations) as well as the 10 top-cited articles according to ACY (7/10; mean, 285.14 citations). The most prolific authors were Nomura (8 articles); Burks (6 articles); and Inoue, Sillanpää, and Dreyhaupt (5 articles each). Conclusion By analyzing the characteristics of the 100 top-cited articles, this study demonstrated that the MPFL is a growing and popular area of research, with the focus varying through timeline trends. Questions regarding MPFL anatomy, isometry, and biomechanics might have been answered adequately, but research regarding optimal fixation technique under various circumstances is still ongoing.
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Affiliation(s)
| | - Vasileios Giannatos
- Department of Sports Medicine, University Hospital of Patras, Patras, Greece
| | | | - John Lakoumentas
- Department of Medical Physics, University Hospital of Patras, Patras, Greece
| | - Vasileios Raoulis
- Department of Sports Medicine, University Hospital of Larissa, Larissa, Greece
| | - Michael Hantes
- Department of Sports Medicine, University Hospital of Larissa, Larissa, Greece
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Huddleston HP, Lavoie-Gagne O, Mehta N, Walsh JM, Fu MC, Forsythe B, Verma NN, Cole BJ, Yanke AB. PROMIS physical function and pain perform poorly psychometrically in patients undergoing medial patellofemoral ligament reconstruction. Knee Surg Sports Traumatol Arthrosc 2023; 31:5067-5076. [PMID: 37823904 DOI: 10.1007/s00167-023-07535-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 07/28/2023] [Indexed: 10/13/2023]
Abstract
PURPOSE The purpose of this study was to assess the validity, floor and ceiling effects, and dimensionality of PROMIS Physical Function (PF) and Pain compared to legacy patient reported outcome (PRO) measures in patients undergoing medial patellofemoral ligament (MPFL) reconstruction. METHODS Patients who underwent MPFL reconstruction between 2018 to 2020 were retrospectively reviewed. Preoperatively, patients completed the IKDC, VR-12, Kujala, SF-12, KOOS JR, PROMIS PF and Pain surveys. Inter-survey convergence was assessed with Spearman correlations. Psychometric analysis included investigations of inter-survey convergent validity, intra-survey floor and ceiling effects, and Rasch analyses with person-item fit and iterative question elimination model fit testing. RESULTS A total of 76 patients (mean age: 22.6 ± 8.4 years) who completed preoperative surveys were included (compliance: 91.7-96.2%). Preoperatively, age was significantly associated with both PROMIS PF (coefficient: - 0.291, P = 0.005) and Pain scores (coefficient: 0.294, P = 0.002). PROMIS PF had a Very Good correlation with IKDC and PROMIS Pain had a Very Good correlation with KOOS JR. Other correlations ranged from Poor to Good. No significant floor or ceiling effects were observed for any PRO. On iterative question elimination Rasch modelling, only two questions from PROMIS PF remained after 6 rounds of elimination while PROMIS Pain had no questions remaining after 3 rounds of elimination. CONCLUSION Preoperative PROMIS PF and Pain provided only Fair to Good correlations with most legacy PROs. Although no significant floor and ceiling effects were observed, PROMIS PF and Pain did not perform well psychometrically in this population of patients undergoing MPFL reconstruction. These results suggest PROMIS questionnaires should be used with caution in this population, especially if used in isolation, when discussing clinical expectations with patients. The authors recommend continued use of legacy PROs specific to assessment of patellar instability and function that have established validity in patellar instability populations. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Hailey P Huddleston
- Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA
- Hospital for special surgery, New York, NY, USA
| | - Ophelie Lavoie-Gagne
- Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA
- Harvard, Cambridge, MA, USA
| | - Nabil Mehta
- Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA
| | - Justin M Walsh
- Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA
- Houston Methodist, Houston, TX, USA
| | - Michael C Fu
- Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA
| | - Brian Forsythe
- Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA
| | - Nikhil N Verma
- Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA
| | - Brian J Cole
- Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA
| | - Adam B Yanke
- Rush University Medical Center, 1611 W. Harrison Street, Chicago, IL, 60612, USA.
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9
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Tarchala M, Kerslake S, Hiemstra LA. Sulcus-Deepening Trochleoplasty for High-Grade Trochlear Dysplasia: Demystifying the Procedure-a Review of the Current Literature. Curr Rev Musculoskelet Med 2023; 16:538-549. [PMID: 37698757 PMCID: PMC10587046 DOI: 10.1007/s12178-023-09868-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/29/2023] [Indexed: 09/13/2023]
Abstract
PURPOSE OF REVIEW The most common and biomechanically influential pathoanatomic risk factor for recurrent patellofemoral instability is trochlear dysplasia. Sulcus-deepening trochleoplasty is a procedure developed to address high-grade trochlear dysplasia in the setting of patellofemoral instability. The purpose of this paper is to outline the current classification and surgical management of trochlear dysplasia as well as to review the current literature on the clinical outcomes and complications of sulcus-deepening trochleoplasty. RECENT FINDINGS This review outlines the most recent literature reporting evidence behind the decision-making to perform a trochleoplasty in the setting of patellofemoral instability and high-grade trochlear dysplasia. Critical parameters include grade of trochlear dysplasia, severity of symptoms, pertinent physical examination findings, surgical techniques, modifications for skeletally immature patients, and considerations for the revision setting. Historic studies have elicited concerns regarding high reported complication rates for trochleoplasty; however, recent studies consistently report good clinical outcomes and acceptable complication rates, similar to those of other patellar stabilizing procedures. The addition of a trochleoplasty in patients with high-grade dysplasia results in a lower re-dislocation rate, significant improvements in patient-reported outcome measures (PROMs) as well as high levels of patient satisfaction and return to sport. The use of sulcus-deepening trochleoplasty for the treatment of high-grade dysplasia and recurrent patellofemoral instability is a well-established technique with good outcomes and an acceptable complication profile. In patients with high-grade dysplasia, trochleoplasty results in lower re-dislocation rates, high patient satisfaction scores, and good clinical and functional outcomes. An understanding of trochleoplasty and its indications should be in the armamentarium of surgeons treating patellofemoral instability.
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Affiliation(s)
| | - Sarah Kerslake
- Banff Sport Medicine Foundation, Box 1300, Banff, AB T1L 1B3 Canada
| | - Laurie A. Hiemstra
- Banff Sport Medicine Foundation, Box 1300, Banff, AB T1L 1B3 Canada
- Department of Surgery, University of Calgary, Calgary, Canada
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10
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Almeida J, Senra AR, Leite MJ, Oliveira P, Sousa A, Torres J. Is combined MPFL reconstruction and tubercule tibial osteotomy superior to isolated reconstruction? A systematic review and meta-analysis. J Clin Orthop Trauma 2023; 45:102277. [PMID: 38044955 PMCID: PMC10689258 DOI: 10.1016/j.jcot.2023.102277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/18/2023] [Accepted: 11/03/2023] [Indexed: 12/05/2023] Open
Abstract
Purpose There is no consensus for management of patellar instability, even in the case of malalignment. The purpose of the review is to evaluate outcomes in the literature of MPFL reconstruction with and without tibial tubercle osteotomy. Methods Two databases PubMed and Scopus were searched for studies comparing MPFL reconstruction with and without concomitant tibial tuberosity osteotomy. PRISMA guidelines were followed. Data on functional outcomes via Kujala score, redislocation rates and return to sport rates were reported. Results 9 studies included data from 806 knees: 463 submitted to isolated MPFL reconstruction, and 343 submitted to the combined surgery. Patients submitted to the combined procedure had all TT-TG values superior to 18, while the ones with isolated reconstruction had more heterogeneous values, varying between 13 and 20 mm. 77.78% of the studies reported on postoperative Kujala scores, with a mean value of 83.53 in patients who underwent MPFL reconstruction alone and 83.72 in those who underwent the combined procedure. The mean difference between the two groups was -0.83, with the improvement of the score statistically significant in 22.22% of the studies, regardless of the surgery. Concerning redislocation rate, odds ratio comparing both procedures was 0.84 (p = 0.67). Conclusion The principal finding is that the MPFL reconstruction with or without TTO resulted in similar functional outcomes, assessed by the Kujala score, and low complications concerning recurrent patellar dislocation. More robust literature is needed in the setting of a high TT-TG distance. Level of evidence IV.
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Affiliation(s)
- Joana Almeida
- Department of Orthopedics and Traumatology, São João University Hospital, Porto, Portugal
| | - Ana Rita Senra
- Department of Orthopedics and Traumatology, São João University Hospital, Porto, Portugal
| | - Maria João Leite
- Department of Orthopedics and Traumatology, São João University Hospital, Porto, Portugal
- Porto Medical School, Porto University, Portugal
- Hospital CUF Porto, Portugal
| | - Paulo Oliveira
- Department of Orthopedics and Traumatology, São João University Hospital, Porto, Portugal
- Porto Medical School, Porto University, Portugal
- Hospital CUF Porto, Portugal
- Head of the Portuguese Society for the Study of Knee Pathology, Portugal
| | - António Sousa
- Department of Orthopedics and Traumatology, São João University Hospital, Porto, Portugal
- Porto Medical School, Porto University, Portugal
- Hospital CUF Porto, Portugal
| | - João Torres
- Department of Orthopedics and Traumatology, São João University Hospital, Porto, Portugal
- Porto Medical School, Porto University, Portugal
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11
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Pappa N, Good L, DiBartola A, Martin K, Flanigan DC, Magnussen RA. Patella alta and increased TT-TG distance do not adversely affect patient-reported outcomes following isolated MPFL reconstruction: A systematic review. J ISAKOS 2023; 8:352-363. [PMID: 37562573 DOI: 10.1016/j.jisako.2023.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 07/19/2023] [Accepted: 08/02/2023] [Indexed: 08/12/2023]
Abstract
OBJECTIVES To analyze the effect of patellofemoral anatomical variations (patella alta, increased tibial tubercle-trochlear groove [TT-TG] distance, and trochlear dysplasia) on clinical outcomes after isolated medial patellofemoral ligament (MPFL) reconstruction. METHODS A comprehensive search from PubMed, Embase, and the Cochrane Library databases was conducted to identify studies that compared outcomes based on the presence or absence of patella alta, elevated tibial tubercle-trochlear groove (TT-TG) distance, and/or trochlear dysplasia. Exclusion criteria included reviews and meta-analyses, studies that included patients who underwent associated bony procedures, and those reporting outcomes after isolated MPFL reconstruction with no comparison between varying anatomical groups. RESULTS After application of selection criteria, 19 studies were included. Patella alta was not predictive of failure or poorer outcomes among 13 studies; however, 2 studies demonstrated poorer patient-reported outcome scores and/or higher failure rates with increasing patellar height. Increasing TT-TG distance demonstrated a statistically significant correlation with poorer outcomes in only one study, whereas 12 other studies showed no association. Trochlear dysplasia resulted in worse outcomes and greater failure rates in 6 studies, while 10 studies showed no statistically significant correlation between trochlear dysplasia and postoperative outcomes. CONCLUSION Patella alta and increased TT-TG distance did not adversely affect outcomes following isolated MPFL reconstruction in the preponderance of reviewed studies. Data are mixed regarding the impact of trochlear dysplasia on the outcomes of isolated MPFL reconstruction. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Nicholas Pappa
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH 43202, USA
| | - Logan Good
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH 43202, USA
| | - Alex DiBartola
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH 43202, USA
| | - Kyle Martin
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH 43202, USA
| | - David C Flanigan
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH 43202, USA
| | - Robert A Magnussen
- Department of Orthopaedics, The Ohio State University Wexner Medical Center, Columbus, OH 43202, USA.
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12
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Elias JJ, Cosgarea AJ, Tanaka MJ. Adding Tibial Tuberosity Medialization to Medial Patellofemoral Ligament Reconstruction Reduces Lateral Patellar Maltracking During Multidirectional Motion in a Computational Simulation Model. Arthrosc Sports Med Rehabil 2023; 5:100753. [PMID: 37645404 PMCID: PMC10461214 DOI: 10.1016/j.asmr.2023.100753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 05/29/2023] [Indexed: 08/31/2023] Open
Abstract
Purpose To determine whether adding tibial tuberosity medialization to medial patellofemoral ligament (MPFL) reconstruction reduces lateral patellar maltracking during a dynamic multidirectional activity and to investigate when medial patellofemoral contact pressures are elevated during daily activities, such as squatting. Methods Seven computational models representing knees with patellar instability, including lateral patellar maltracking, were evaluated following simulated MPFL reconstruction (bisect offset index > .75). Tibial tuberosity medialization was added to MPFL reconstruction for each model. Patellar tracking during multidirectional motion was evaluated by simulating pivot landing. Analysis of pivoting focused on early flexion (5° to 40°). Patellofemoral contact pressures during daily function were evaluated by simulating knee squatting. Data were analyzed with paired comparisons between MPFL reconstruction with and without tuberosity medialization. Results The patella dislocated during pivoting for 2 models with an isolated MPFL reconstruction and for 1 model including tibial tuberosity medialization. Adding tibial tuberosity medialization to MPFL reconstruction significantly decreased bisect offset index by ∼0.1 from 5° to 40° (P < .03). For knee squatting, medializing the tibial tuberosity significantly increased maximum medial contract pressure by ∼0.5 MPa from 30° to 85° (P < .05) but did not significantly influence maximum lateral pressure. Conclusions In this study of simulated multidirectional motion, MPFL reconstruction did not sufficiently constrain the patella for some knees. Adding tibial tuberosity medialization to MPFL reconstruction in these models reduced lateral patellar maltracking during multidirectional motion but increased pressure applied to medial cartilage during squatting. Clinical Relevance After establishing the influence of tibial tuberosity medialization on patellar maltracking for an idealized population, as was done in the current study, future simulation studies can be performed to better determine the anatomical characteristics of patients for whom tibial tuberosity medialization is needed to reduce the risk of postoperative patellar maltracking.
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Affiliation(s)
- John J. Elias
- Department of Health Sciences, Cleveland Clinic Akron General, Cleveland, Ohio, U.S.A
| | - Andrew J. Cosgarea
- Department of Orthopaedic Surgery, Johns Hopkins University, Baltimore, Maryland, U.S.A
| | - Miho J. Tanaka
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
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13
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Edwards D, Casas-Cordero JP, Cerda D, Alonso J, Cornejo F, Calvo R, Zelaya G. Isolated Medial Patellofemoral Ligament Reconstruction in Patellar Instability: Does the Distance Between Tibial Tuberosity-Trochlear Groove Make a Difference? Indian J Orthop 2023; 57:1203-1208. [PMID: 37525739 PMCID: PMC10386993 DOI: 10.1007/s43465-023-00906-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 05/06/2023] [Indexed: 08/02/2023]
Abstract
Introduction Medial patellofemoral ligament reconstruction (MPFLR) is used in most patellar instability surgeries, there is controversy on adding a tibial tuberosity osteotomy (TTO). Objective To describe the results of isolated MPFLR in patellar instability according to the Tibial Tuberosity-Trochlear Groove distance (TT-TG). Methods Retrospective study of patients with patellar instability with a mature skeleton in one center between 2016 and 2021, using isolated MPFLR. Patients with incomplete clinical and/or radiological records and less than one year follow-up were excluded. Pre-surgical demographic and radiological data (TT-TG, Caton-Deschamps (CD) index, patellar tilt, trochlear dysplasia) were recorded. Patients were divided into three groups according to TT-TG distance (Group 1: < 17 mm, Group 2: 17-19, Group 3: ≥ 20 mm). A pre and post-surgical Kujala score was performed. Local complications, satisfaction, recurrence and/or reintervention were recorded. Pre-surgical variables between groups, intra and inter-group Kujala differences were compared using Bartlett's test. Consent from the patients and approval from the local ethics committee were obtained. Results 67 patients met the selection criteria, mean age of 23 years, 70% were women. There were no pre surgical, radiological nor follow-up differences between the groups (average 27 months). Pre and post-surgical Kujala score, respectively: Group 1: 37-78, Group 2: 37-78, Group 3: 39-79. All groups had a significant improvement (p < 0.05), there were no significant differences in improvement between groups (p > 0.05). There were three patients with a redislocation episode, all in group 1. One patient had a mobilization under anesthesia due to an arthrofibrosis (Group 2). 97% of all cases reported being satisfied. Conclusion Isolated MPFLR in patellar instability presents a functional improvement, with a low rate of complications and failure, regardless of the pre surgical TT-TG. Supplementary Information The online version contains supplementary material available at 10.1007/s43465-023-00906-6.
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Affiliation(s)
- Diego Edwards
- Knee Team, La Florida Hospital, Froilán Roa 6542, La Florida, Santiago, Chile
- Department of Traumatology, Alemana Clinic, Santiago, Chile
| | | | - Daniel Cerda
- Knee Team, La Florida Hospital, Froilán Roa 6542, La Florida, Santiago, Chile
| | - Julián Alonso
- Knee Team, La Florida Hospital, Froilán Roa 6542, La Florida, Santiago, Chile
| | | | - Rafael Calvo
- Department of Traumatology, Alemana Clinic, Santiago, Chile
| | - Gerardo Zelaya
- Knee Team, La Florida Hospital, Froilán Roa 6542, La Florida, Santiago, Chile
- Head of Unit Knee Team, La Florida Hospital, Santiago, Chile
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14
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Johnson EE, Campbell MP, Reddy M, Paul RW, Erickson BJ, Tjoumakaris FP, Freedman KB, Bishop ME. Differences in the Severity and Location of Patellofemoral Cartilage Damage Between Instability Patients With and Without Patella Alta. Orthop J Sports Med 2023; 11:23259671231186823. [PMID: 37533500 PMCID: PMC10392508 DOI: 10.1177/23259671231186823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 04/11/2023] [Indexed: 08/04/2023] Open
Abstract
Background Patella alta is a risk factor for recurrent patellar instability. Differences in chondral injury in patients with patellar instability between patella alta and patella norma have not been evaluated. Purpose To analyze whether preoperative cartilage damage differs in severity and location between patellar instability patients with and without patella alta. Study Design Cohort study; Level of evidence, 3. Methods Patients with patellar instability who underwent patellar realignment surgery at a single institution with preoperative magnetic resonance imaging (MRI) scans were included. After measurement of Caton-Deschamps index (CDI) on MRI, patients were divided into patella alta (CDI ≥1.3) and patella norma groups. The area measurement and depth and underlying structures (AMADEUS) score was used to quantify cartilage defect severity on MRI. Results A total of 121 patients were divided into patella alta (n = 50) and patella norma (n = 71) groups. The groups did not differ significantly in sex ratio, age at MRI, body mass index, mean reported number of previous dislocations, or mean interval between first reported dislocation and date of MRI. A total of 34 (68%) of the patella alta group and 44 (62%) of the patella norma group had chondral defects (P = .625) with no significant between-group differences in defect size (P = .419). In both groups, chondral injuries most affected the medial patellar facet (55% in patella alta vs 52% in patella norma), followed by the lateral facet (25% vs 18%), and lateral femoral condyle (10% vs 14%). A smaller proportion of patients had full-thickness defects in the patella alta compared with the patella norma group (60% vs 82%; P = .030). The overall AMADEUS score was higher for the patella alta versus the patella norma group (68.9 vs 62.1; P = .023), indicating superior articular cartilage status. Conclusion Patients with patella alta had less severe cartilage injury after patellar instability, including a lower proportion with full-thickness defects and better overall cartilage grade. The location of injury when present was similar between alta and norma, with most defects affecting the medial facet, lateral facet, and lateral femoral condyle in descending frequency.
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Affiliation(s)
- Emma E. Johnson
- Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA
| | | | - Manoj Reddy
- Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA
| | - Ryan W. Paul
- Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, USA
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15
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Abed V, Goodwin A, DuVall A, Rexroth J, Liu JN, Stone AV. The Top 50 Most Cited Articles on the Medial Patellofemoral Ligament (MPFL): A Bibliometric Analysis. Indian J Orthop 2023; 57:827-837. [PMID: 37214375 PMCID: PMC10192460 DOI: 10.1007/s43465-023-00872-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 03/10/2023] [Indexed: 05/24/2023]
Abstract
Objectives To determine which original articles on the topic of the medial patellofemoral ligament (MPFL) have been cited the most in the literature utilizing a bibliometric approach. Secondarily, to determine temporal trends between article types. Methods Articles on the topic of the MPFL were identified by utilizing the Web of Science Database. The search yielded 1596 results and the top 50 cited original articles were collected for further analysis. The following information was gathered for all included articles: title, first author's name, journal name, year of publication, impact factor of the journal in 2021, total number of citations of the article, average citations per year (ACY), geographic origin, institutions, research theme, and keywords. Articles were then grouped into one of three categories: cadaveric/anatomic, clinical, and radiologic. Results The total number of citations was 10,393. Most were published between the years 2000-2009 (66%) and in the journal, American Journal of Sports Medicine (34%). The mean ACY was 11.73 ± standard deviation 5.86 and the Kawasaki Municipal Hospital was the institution with the most articles included in the top 50 (n = 6, 12%). The top-cited articles focused on 3 themes: cadaveric/anatomic (n = 18, 36%), clinical (n = 25, 50%), and radiologic (n = 7, 14%). Cadaveric/anatomic articles had the highest average number of citations at 271.4 ± 153.9, followed by radiologic (173.3 ± 53.0) and clinical articles (171.8 ± 102.4). Over time, clinical articles were more likely to be included in the top 50 list, compared to cadaveric/anatomic/radiologic articles. Conclusion The most impactful MPFL articles relate to cadaveric/anatomic articles; however, over time, clinical articles became more prevalent.
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Affiliation(s)
- Varag Abed
- Department of Orthopaedic Surgery and Sports Medicine, University of Kentucky, 2195 Harrodsburg Rd, Lexington, KY 40504 USA
| | - Alyssa Goodwin
- School of Medicine, Wayne State University, Detroit, USA
| | - Alex DuVall
- School of Medicine, Wayne State University, Detroit, USA
| | | | - Joseph N. Liu
- Department of Orthopaedic Surgery, Keck Medicine of USC, Los Angeles, USA
| | - Austin V. Stone
- Department of Orthopaedic Surgery and Sports Medicine, University of Kentucky, 2195 Harrodsburg Rd, Lexington, KY 40504 USA
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Dewan V, Gudipati S, Rooney J, Lloyd A, Chugh S, Mughal E. Medial patellofemoral ligament reconstruction and tibial tuberosity transfer can be used to successfully manage patellofemoral instability in the setting of trochlea dysplasia. Knee Surg Relat Res 2023; 35:11. [PMID: 37106401 PMCID: PMC10141911 DOI: 10.1186/s43019-023-00181-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 02/28/2023] [Indexed: 04/29/2023] Open
Abstract
BACKGROUND Management of patella instability remains a challenge particularly in the presence of trochlea dysplasia. The aim of this study is to assess the recurrence rates of those with patellar instability who have undergone a combined tibial tuberosity transfer (TTT) and medial patellofemoral ligament reconstruction (MPFLR) in the setting of trochlea dysplasia. METHODS All skeletally mature patients who underwent combined TTT and MPFLR for recurrent patella instability were identified between January 2009 and December 2019. A retrospective review was conducted, with information regarding re-dislocation/subluxation and complications collected. RESULTS Seventy patients with a mean age 25.3 years were identified and evaluated. Thirteen patients were found to have low-grade dysplasia (Dejour A), with 57 patients having high-grade dysplasia (Dejour B/C/D). No patients in the low,grade dysplasia group suffered a recurrence of their symptoms, with four in the high-grade group suffering episodes of re-dislocation/subluxation. Three patients subsequently underwent a trochleoplasty, with the other patient managed successfully non-operatively. There were a total of 13 complications in 11 patients. CONCLUSIONS A combined procedure of MPFLR and TTT can be used to manage patellofemoral instability even in the setting of trochlea dysplasia with a low rate of recurrence. Trochlea dysplasia, however, remains an anatomical risk factor for recurrence and patients should be counselled accordingly. The anatomical risk factors should be assessed in all patients to allow for the development of the most appropriate management plan, of which this combined procedure represents a potentially successful option. LEVEL OF EVIDENCE IV (Case Series).
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Affiliation(s)
- Varun Dewan
- New Cross Hospital, Wolverhampton Road, Heath Town, Wolverhampton, WV10 0QP, UK.
| | - Suribabu Gudipati
- New Cross Hospital, Wolverhampton Road, Heath Town, Wolverhampton, WV10 0QP, UK
| | - Joanna Rooney
- Stepping Hill Hospital, Poplar Grove, Hazel Grove, Stockport, SK2 7JE, UK
| | - Adam Lloyd
- New Cross Hospital, Wolverhampton Road, Heath Town, Wolverhampton, WV10 0QP, UK
| | - Sanjiv Chugh
- New Cross Hospital, Wolverhampton Road, Heath Town, Wolverhampton, WV10 0QP, UK
| | - Ejaz Mughal
- New Cross Hospital, Wolverhampton Road, Heath Town, Wolverhampton, WV10 0QP, UK
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17
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Jackson GR, Tuthill T, Gopinatth V, Mameri ES, Jawanda H, Sugrañes J, Asif S, Wessels M, McCormick JR, Kaplan DJ, Yanke AB, Knapik DM, Verma NN, Chahla J. Complication Rates After Medial Patellofemoral Ligament Reconstruction Range From 0% to 32% With 0% to 11% Recurrent Instability: A Systematic Review. Arthroscopy 2023; 39:1345-1356. [PMID: 36764559 DOI: 10.1016/j.arthro.2023.01.098] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/15/2023] [Accepted: 01/27/2023] [Indexed: 02/12/2023]
Abstract
PURPOSE To review the incidence of complications following primary medial patellofemoral ligament (MPFL) reconstruction for recurrent patellar instability. METHODS A literature search was conducted by querying PubMed and Scopus databases from database inception through August 2022 according to the 2020 Preferred Reporting Items for Systematic Review and Meta-analysis guidelines using the terms "Medial Patellofemoral Ligament," "MPFL," "reconstruction," "patellar," and "instability." Inclusion criteria included studies reporting complications following primary MPFL reconstruction for recurrent patellar instability. Exclusion criteria consisted of studies reporting on patients undergoing concurrent osteotomy procedures, revision reconstruction, and biomechanical or anatomic studies. The incidence of specific complications was aggregated from the included studies. RESULTS Twenty-eight studies, consisting of 1,478 patients (n = 1521 knees), with a mean age of 23.3 years (mean range, 19-34.3 years) were identified. The overall incidence of complications ranged from 0% to 32.3% of knees. Failure ranged from 0% to 10.7% of knees, whereas patellar fractures occurred in 0% to 8.3% of knees, primarily in patients treated with full-length transverse tunnel or 2-tunnel techniques. All patellar fractures occurred in patients with patellar tunnels ranging from 4.5 to 6.0 mm in diameter. The incidence of postoperative knee stiffness/range of motion deficit ranged from 0% to 20%. Persistent anterior knee pain, ranged from 0% to 32.3%. CONCLUSIONS Complications following primary MPFL reconstruction ranged from 0% to 32.3% of knees, primarily consisting of residual anterior knee pain. Failure ranged from 0% to 10.7% of knees, whereas patellar fractures were reported in 0% to 8.3% of knees. Fractures primarily occurred with a full-length transverse tunnel or 2-tunnel techniques, whereas all fractures occurred with patellar tunnels ranging from 4.5 mm to 6.0 mm in diameter. LEVEL OF EVIDENCE IV; Systematic Review of Level I-IV studies.
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Affiliation(s)
- Garrett R Jackson
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Trevor Tuthill
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Varun Gopinatth
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Enzo S Mameri
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A.; Instituto Brasil de Tecnologia da Saúde, Rio de Janeiro, Brazil; Department of Orthopedics and Traumatology, Federal University of São Paulo (EPM-UNIFESP), São Paulo, Brazil
| | - Harkirat Jawanda
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Joan Sugrañes
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A.; Department of Orthopaedic Surgery, Hospital de La Santa Creu I Sant Pau, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Shaan Asif
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Morgan Wessels
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Johnathon R McCormick
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Daniel J Kaplan
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Adam B Yanke
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Derrick M Knapik
- Department of Orthopaedic Surgery, Washington University and Barnes-Jewish Orthopedic Center, Chesterfield, Missouri, U.S.A
| | - Nikhil N Verma
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A
| | - Jorge Chahla
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois, U.S.A..
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The remaining parameters of patellar instability could be affected for osteoarthritic change after medial patellofemoral ligament reconstruction with or without anteromedialization of the tibial tubercle osteotomy for patellar instability: a retrospective cohort study. BMC Musculoskelet Disord 2023; 24:56. [PMID: 36683021 PMCID: PMC9869604 DOI: 10.1186/s12891-022-06100-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 12/19/2022] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND In literature, studies evaluating the factors associated the postoperative progression of patellofemoral (PF) osteoarthritis (OA) following patellar stabilization surgery are limited. This study aimed to compare the clinical outcomes after medial patellofemoral ligament reconstruction (MPFLR) as an isolated procedure (iMPFLR) and in combination with anteromedialization (AMZ) of the tibial tubercle osteotomy (TTO) and investigate the factors related to the postoperative progression of PFOA after patellar stabilization surgery. METHODS Between 2009 and 2020, 30 knees of 23 consecutive patients underwent MPFLR with or without AMZ, using an autologous semitendinosus tendon graft; they were followed up for more than 2 years in the retrospective nature of the study. iMPFLR was performed in cases of recurrent patellar dislocation with normal tibial tubercle-trochlear groove (TT-TG) distance and no PFOA, and MPFLR+AMZ was performed for cases of excessive TT-TG distance, preoperative PFOA of recurrent patellar dislocation, or habitual patellar dislocation. Clinical findings and radiographs of the PF joint were evaluated pre- and postoperatively with PF alignment parameters and PFOA and were compared between surgical procedures. Factors for the postoperative progression of PFOA were compared between the OA progression and non-progression groups. RESULTS Postoperative clinical score, radiographic parameters except for sulcus angle, TT-TG distance, and progression of PFOA were not significantly different between the iMPFLR and MPFLR+AMZ groups. Postoperative lateral patellar displacement (p = 0.001) and congruence angle (p = 0.017) were significantly different between the OA progression and non-progression groups. CONCLUSION Similar to MPFLR for recurrent cases, MPFLR with AMZ can improve the clinical and radiographic outcomes in severe cases. The remaining parameters of patellar instability could be affected in the postoperative progression of PFOA after MPFL reconstruction with or without AMZ of TTO for patellar instability.
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Arthroscopic Anatomical Double-Bundle Medial Patellofemoral Complex Reconstruction Improves Clinical Outcomes in Treating Recurrent Patellar Dislocation Despite Trochlear Dysplasia, Elevated Tibial Tubercle-Trochlear Groove Distance, and Patellar Alta. Arthroscopy 2023; 39:102-111. [PMID: 35840069 DOI: 10.1016/j.arthro.2022.06.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 06/25/2022] [Accepted: 06/26/2022] [Indexed: 02/02/2023]
Abstract
PURPOSE To evaluate the clinical outcomes of arthroscopically assisted double-bundle medial patellofemoral complex reconstruction (MPFC-R). METHODS A retrospective review was carried out among adult patients who experienced at least 2 patellar dislocations and underwent primary arthroscopically assisted MPFC-R between January 2014 and November 2019. Dejour classification, tibial tubercle-trochlear groove (TT-TG) distance, and patellar height (with Insall-Salvati index) were measured. Pre- and postoperative patellar tilt were compared. Information on outcome scores, ability to return to sports, postoperative recurrent dislocations, and complications was recorded. RESULTS A total of 42 MPFC-Rs in 39 patients were included. Mean age at surgery was 22.2 ± 7.6 years; 69.2% of patients were female. Mean follow-up was 47.3 ± 20.2 months. Seventy-four percent of cases had Dejour B (19.0%), C (33.3%), and D (21.4%) trochlear dysplasia; mean TT-TG distance was 19.6 ± 3.5 mm, and mean Insall-Salvati index was 1.21 ± 0.17. Mean patellar tilt decreased from 27.6 ± 11.6° to 9.4 ± 6.5° (P < .001). All patients had statistically significant (P < .001) improvement in mean International Knee Documentation Committee (IKDC) (44.9 ± 18.2 to 87.5 ± 6.9), Lysholm (61.4 ± 16.6 to 94.1 ± 6.4), Kujala (56.0 ± 16.8 to 92.9 ± 5.3), and Tegner score (2.7 ± 1.3 to 4.6 ± 1.4). The majority of patients (96.9%) returned to sports, with 90.3% returning to the same or greater level of activity. No postoperative dislocations or subluxations were reported. CONCLUSIONS Arthroscopically assisted double-bundle MPFC-R is a promising procedure to treat recurrent patellar instability at 2- to 7-year mid-term follow-up, despite the presence of trochlear dysplasia, elevated TT-TG distance and patellar alta. The improvement of IKDC score exceeded the minimal clinically important difference in 95.2% patients, and 66.7% surpassed the patient acceptable symptomatic state based on postoperative IKDC score with no redislocations being reported at latest follow-up. LEVEL OF EVIDENCE Level IV, case series, retrospective.
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Vivekanantha P, Kahlon H, Cohen D, de Sa D. Isolated medial patellofemoral ligament reconstruction results in similar postoperative outcomes as medial patellofemoral ligament reconstruction and tibial-tubercle osteotomy: a systematic review and meta-analysis. Knee Surg Sports Traumatol Arthrosc 2022; 31:2433-2445. [PMID: 36214831 DOI: 10.1007/s00167-022-07186-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 09/27/2022] [Indexed: 11/05/2022]
Abstract
PURPOSE To determine the effect of isolated medial patellofemoral ligament reconstruction (MPFLR) versus concomitant MPFLR and tibial-tubercle osteotomy (TTO) on patient-reported functional outcomes, rate of patellar redislocation, and rate of return to sport in skeletally mature patients with recurrent patellar instability and lateralization as defined by elevated tibial-tubercle trochlear groove (TT-TG) distance. METHODS Three databases MEDLINE, PubMed and EMBASE were searched from inception to July 10th, 2022 for literature outlining the management of patients with TT-TG indices greater than 15 mm with either isolated MPFLR or concomitant MPFLR and TTO procedures. The authors adhered to the PRISMA and R-AMSTAR guidelines as well as the Cochrane Handbook for Systematic Reviews of Interventions. Data on functional outcomes via the Kujala anterior knee pain score, redislocation rates, return to sport rates, and complications were recorded. The MINORS score was used for all studies to perform a quality assessment of included studies. RESULTS A total of 31 studies comprising 1405 patients (1452 knees) were included in this review. The mean Kujala score in 13 studies comprising 848 total patients in the isolated MPFLR group was 85.0 (range 80.9-97.5) compared to a score of 83.7 (range 77.2-94.0) in 14 studies comprising 459 patients in the concomitant group. The mean pooled redislocation rate in 19 studies examining isolated MPFLR procedures comprising 948 patients was 3.1% (95% CI 2.1-4.4%, I2 = 7%) as opposed to 3.2% (95% CI 1.9-5.0%, I2 = 0%) in 15 studies comprising 486 patients in the concomitant group. The mean pooled return to sport rate in seven studies with 472 total patients in the isolated MPFLR group was 82% (95% CI 78-86%, I2 = 16%) compared to a score of 92% (95% CI 78-99%, I2 = 58%) in four studies comprising 54 patients in the concomitant group. There were similar complication rates between both treatment groups, including range of motion deficits, fractures, infections, and graft failures. CONCLUSION Isolated MPFLR leads to similar anterior knee pain, similar redislocation rates and lower return to sport rates than concomitant MPFLR and TTO procedures in patients with TT-TG distances greater than 15 mm. Information from this review can aid surgeons in their decision to choose MPFLR versus concomitant procedures for this patient population, and can also guide future studies on this topic. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
| | - Harjind Kahlon
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Dan Cohen
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University Medical Centre, 1200 Main St West, Hamilton, ON, 4E14L8N 3Z5, Canada
| | - Darren de Sa
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University Medical Centre, 1200 Main St West, Hamilton, ON, 4E14L8N 3Z5, Canada.
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Hao K, Feng A, Kong L, Wang F. Quality of life following medial patellofemoral ligament reconstruction combined with medial tibial tubercle transfer in patients with recurrent patellar dislocation: a retrospective comparative study. J Orthop Surg Res 2022; 17:416. [PMID: 36104806 PMCID: PMC9476691 DOI: 10.1186/s13018-022-03310-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 09/03/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Because the patients undergoing medial patellofemoral ligament reconstruction (MPFLr) combined with medial tibial tubercle transfer (TTT) procedure are usually young and active, the quality of life (QoL) is also an important prognostic factor for patients with recurrent patellar dislocation. Assessing QoL can provide more useful and accurate evidence for the effects of this procedure. This study aimed to evaluate QoL following MPFLr combined with TTT, compared with isolated MPFLr (iMPFLr).
Methods
Fifty-one patients who underwent iMPFLr + TTT and 48 patients who underwent iMPFLr were included. Clinical evaluation included QoL (EQ-5D-5L and EQ-5D VAS), functional outcomes (Kujala, Lysholm and Tegner activity scores), physical examinations (patellar apprehension test and range of motion) and redislocation rates. Radiological evaluation included patellar tilt angle and bisect offset. These preoperative and postoperative results were compared between groups at baseline and the final follow-up. The paired and independent t tests were used for the data following a normal distribution. Otherwise, the Wilcoxon and Mann–Whitney U tests were used to analyze the differences. Categorical variables were compared by chi-square or Fisher’s exact test.
Results
All of the QoL (EQ-5D-5L and EQ-5D VAS), clinical results and radiological outcomes significantly improved in both groups at the final follow-up, with no significant differences between groups. There was no significant difference in five dimensions of EQ-5D at the final follow-up, although percentages of people with problems of mobility and pain/discomfort were higher in the MPFLr + TTT group. Female patients had lower EQ-5D index and EQ-5D VAS compared with male patients in both groups at the final follow-up, but there was only a significant difference in the EQ-5D VAS.
Conclusions
Both MPFLr + TTT and iMPFLr groups obtained similar and satisfactory improvements in the QoL, clinical results and radiological outcomes, indicating that MPFLr combined with TTT is a safe and effective procedure, which can significantly improve the QoL for patients with recurrent patellar dislocation in cases of pathologically lateralized TT. However, female patients obtained lower QoL than males.
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Orfanos G, William Glover A, Sharma N, Barnett A. Trochleoplasty for severe trochlear dysplasia significantly improves the quality of life of patients with symptomatic patellar instability. Knee 2022; 37:95-102. [PMID: 35752140 DOI: 10.1016/j.knee.2022.06.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/13/2022] [Accepted: 06/09/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Trochleoplasty is a recognized surgical technique to address severe trochlear dysplasia. The clinical and radiological outcomes of trochleoplasty surgery in trochlear dysplasia have been well reported. There is a paucity in literature regarding the correlation between trochleoplasty and quality of life (QoL). The aim of this study is to measure the improvement in QoL, in patients with severe trochlear dysplasia and recurrent patellar instability following trochleoplasty. METHODS Between 2013 and 2019, 51 trochleoplasty cases were performed in 48 patients. They were identified from our prospectively kept database. All operations were performed by a fellowship trained consultant sports knee surgeon. Functional outcomes and QoL scores were assessed using Kujala, IKDC and EQ-5D index. Objective outcomes were obtained following each patient's latest follow-up assessment. RESULTS The mean age at operation was 22y (SD ± 4.7, range 14-37y) and the mean follow-up period was 21.6 months (SD ± 15.2, range 12-60 months). The mean Kujala score improved from 58.1 (SD 14.9) to 77.9 (SD 17.3) at latest follow-up (p < 0.001). The mean IKDC score improved from 40.5 (SD 14.2) to 69.5 (SD 22.8) at latest follow up (p < 0.001). The mean EQ-5D index also improved from 0.593 (SD 0.257) to 0.824 (SD 0.189) at latest follow-up (p = 0.003). A higher Body Mass Index (BMI; >30 kg/m2) was associated with inferior outcomes. CONCLUSION Trochleoplasty is an effective surgical technique which improves the QoL in patients suffering from patellar instability secondary to severe trochlear dysplasia. BMI can be used to predict post-operative outcomes.
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Affiliation(s)
- Georgios Orfanos
- The Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Oswestry SY10 7AG, United Kingdom.
| | - Alexander William Glover
- The Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Oswestry SY10 7AG, United Kingdom.
| | - Nikhil Sharma
- The Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Oswestry SY10 7AG, United Kingdom.
| | - Andrew Barnett
- The Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Oswestry SY10 7AG, United Kingdom.
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Kolb A, Willegger M, Chiari C, Windhager R. Behandlung der Patellainstabilität. ZEITSCHRIFT FUR ORTHOPADIE UND UNFALLCHIRURGIE 2022; 160:463-475. [PMID: 33851401 DOI: 10.1055/a-1295-0533] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Koshino Y, Taniguchi S, Kobayashi T, Samukawa M, Inoue M. Protocols of rehabilitation and return to sport, and clinical outcomes after medial patellofemoral ligament reconstruction with and without tibial tuberosity osteotomy: a systematic review. INTERNATIONAL ORTHOPAEDICS 2022; 46:2517-2528. [PMID: 35701590 DOI: 10.1007/s00264-022-05480-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 06/08/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE No consensus exists on rehabilitation programmes after medial patellofemoral ligament reconstruction (MPFLR) with or without tibial tuberosity osteotomy (TTO). This systematic review examined the content and timeline of rehabilitation (weightbearing, range of motion [ROM] and exercise therapy) and return to sport (RTS), as well as patient-reported outcomes after MPFLR with or without TTO. METHODS The PubMed, Cochrane Library, Web of Sciences, CINAHL and SPORTDiscus databases were searched from inception to December 2021. Studies that reported postoperative rehabilitation programmes and patient-reported outcomes for patients aged ≥ 18 years who underwent MPFLR with or without concomitant TTO were included. RESULTS Eighty-five studies were included, 57 of which were case series and only one randomised controlled trial on rehabilitation programmes. Non-weightbearing was set within one week post-operatively in approximately 80% of weightbearing programmes for MPFLR without and with TTO. Joint immobilisation was set within one week post-operatively in 65.3% and 93.8% of programmes for MPFLR without and with TTO, respectively. Weightbearing and ROM (≤ 90°) restriction were within three weeks post-operatively for > 50% of the programmes. Quadriceps strengthening was the most cited exercise therapy (33 programmes), most often initiated within two weeks post-operatively. However, few other exercise programmes were cited (only nine programmes). RTS was mostly noted at six months post-operatively (35 programmes). The weighted mean Kujala score was 87.4 points. CONCLUSION Regardless of TTO addition to MPFLR, most studies restricted weightbearing and ROM only in the early post-operative period, with seemingly favourable clinical results. Limited information was available on post-operative exercise therapy.
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Affiliation(s)
- Yuta Koshino
- Rehabilitation Center, NTT Medical Center Sapporo, South 1, West 15, Chuo-ku, Sapporo, Hokkaido, 060-0061, Japan.
| | - Shohei Taniguchi
- Rehabilitation Center, NTT Medical Center Sapporo, South 1, West 15, Chuo-ku, Sapporo, Hokkaido, 060-0061, Japan
| | - Takumi Kobayashi
- Department of Rehabilitation, Hokkaido Chitose College of Rehabilitation, Chitose, Japan
| | - Mina Samukawa
- Faculty of Health Sciences, Hokkaido University, Sapporo, Japan
| | - Masayuki Inoue
- Department of Orthopaedic Surgery, NTT Medical Center Sapporo, Sapporo, Japan
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Meynard P, Malatray M, Sappey-Marinier E, Magnussen RA, Bodiou V, Lustig S, Servien E. Medial patellofemoral ligament reconstruction for recurrent patellar dislocation allows a good rate to return to sport. Knee Surg Sports Traumatol Arthrosc 2022; 30:1865-1870. [PMID: 34846539 DOI: 10.1007/s00167-021-06815-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 11/17/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE Recurrent patellar dislocation is a frequent knee disorders in young, active patients. Medial patellofemoral ligament reconstruction (MPFLR) can restore knee stability and function, but the rate of return to sports is less clear. The aim of this study was to evaluate rate of return to sport following treatment of recurrent patellar dislocation with isolated MPFLR. METHODS Between 2011 and 2018, 113 patients with recurrent patellar dislocation were treated with isolated MPFLR at an academic center. Pre-injury sports participation and Tegner score, pre-operative subjective IKDC score, time to return to sports, and post-operative Tegner and subjective IKDC scores were collected, with a minimum of follow-up of 2 years. RESULTS One hundred and three patients (91%) were evaluated at a mean of 4.5 ± 2.5-year post-operative. 92 patients (89%) participated in sports prior to onset of patellar instability. At final follow-up, 84 of these 92 patients (91%) were able to return to sports. The mean time from surgery to return to sports was 10.4 ± 8.6 months (range: 2-48 months). 62 patients (67%) returned to the same (50 patients) or higher (12 patients) level. 22 patients (26%) returned at a lower level. 19 of these patients attributed this decreased participation to ongoing knee problems. The median Tegner score was noted to decrease from 5 pre-injury to 4 post-operatively (p = 0.02). CONCLUSION Isolated MPFL reconstruction allowed return to pre-injury sports in 91% of patients, with 67% of patients returning to the same or higher level than pre-injury. Mean time to return to sports was 10 months and post-operative Tegner score was noted to be modestly decreased from pre-injury level. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Pierre Meynard
- Department of Orthopedic Surgery and Sports Medicine, Croix Rousse Hospital, Civil Hospices of Lyon, FIFA Medical Center of Excellence, 103 bvd de la croix-rousse, 69004, Lyon, France.
| | - Matthieu Malatray
- Department of Orthopedic Surgery and Sports Medicine, Croix Rousse Hospital, Civil Hospices of Lyon, FIFA Medical Center of Excellence, 103 bvd de la croix-rousse, 69004, Lyon, France
| | - Elliot Sappey-Marinier
- Department of Orthopedic Surgery and Sports Medicine, Croix Rousse Hospital, Civil Hospices of Lyon, FIFA Medical Center of Excellence, 103 bvd de la croix-rousse, 69004, Lyon, France
| | - Robert A Magnussen
- Department of Orthopaedics, OSU Sports Medicine Research Institute, The Ohio State University, Columbus, OH, USA
| | - Victor Bodiou
- Department of Orthopedic Surgery and Sports Medicine, Croix Rousse Hospital, Civil Hospices of Lyon, FIFA Medical Center of Excellence, 103 bvd de la croix-rousse, 69004, Lyon, France
| | - Sébastien Lustig
- Department of Orthopedic Surgery and Sports Medicine, Croix Rousse Hospital, Civil Hospices of Lyon, FIFA Medical Center of Excellence, 103 bvd de la croix-rousse, 69004, Lyon, France.,LBMC UMR T 9406, Laboratory of Chock Mechanics and Biomechanics, Claude Bernard Lyon 1 University, 69100, Villeurbanne, France
| | - Elvire Servien
- Department of Orthopedic Surgery and Sports Medicine, Croix Rousse Hospital, Civil Hospices of Lyon, FIFA Medical Center of Excellence, 103 bvd de la croix-rousse, 69004, Lyon, France.,LIBM-EA 7424, Interuniversity Laboratory of Biology of Mobility, Claude Bernard Lyon 1 University, 69100, Villeurbanne, France
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Zheng Z, Xu W, Xue Q. Research Hotspots and Trends Analysis of Patellar Instability: A Bibliometric Analysis from 2001 to 2021. Front Surg 2022; 9:870781. [PMID: 35651685 PMCID: PMC9149225 DOI: 10.3389/fsurg.2022.870781] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Accepted: 04/29/2022] [Indexed: 12/15/2022] Open
Abstract
Background Patellar instability is a common multifactorial disease in orthopedics, which seriously affects the quality of life. Because of the unified pathogeny, diagnosis and treatment, patellar instability has gradually attracted the interest of more scholars these years, resulting in an explosive growth in the research output. This study aims to summarize the knowledge structure and development trend in the field from the perspective of bibliometrics. Methods The data of articles and reviews on patellar instability was extracted from the Web of Science database. The Microsoft Excel, R-bibliometrix, CiteSpace, VOSviewer, Pajek software are comprehensively used to scientifically analyze the data quantitatively and qualitatively. Results Totally, 2,155 papers were identified, mainly from North America, Western Europe and East Asia. Until December 31, 2021, the United States has contributed the most articles (1,828) and the highest total citations (17,931). Hospital for Special Surgery and professor Andrew A Amis are the most prolific institutions and the most influential authors respectively. Through the analysis of citations and keywords based on a large number of literatures, “medial patellofemoral ligament construction”, “tibial tubercle-trochlear groove (TT-TG) distance”, “epidemiological prevalence”, “multifactor analysis of etiology, clinical outcome and radiographic landmarks “ were identified to be the most promising research directions. Conclusions This is the first bibliometric study to comprehensively summarize the research trend and development of patellar instability. The result of our research provides the updated perspective for scholars to understand the key information in this field, and promote future research to a great extent.
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Affiliation(s)
- Zitian Zheng
- Department of Orthopedics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
- Fifth School of Clinical Medicine, Peking University, Beijing, China
| | - Wennan Xu
- Department of Orthopedics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Qingyun Xue
- Department of Orthopedics, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
- Fifth School of Clinical Medicine, Peking University, Beijing, China
- Correspondence: Qingyun Xue
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Cregar WM, Huddleston HP, Wong SE, Farr J, Yanke AB. Inconsistencies in Reporting Risk Factors for Medial Patellofemoral Ligament Reconstruction Failure: A Systematic Review. Am J Sports Med 2022; 50:867-877. [PMID: 33914648 DOI: 10.1177/03635465211003342] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Medial patellofemoral ligament (MPFL) reconstruction is a common surgical treatment for patients with recurrent patellar instability. A variety of risk factors, such as age, trochlear dysplasia, patella alta, and increased tibial tubercle-trochlear groove (TT-TG) distance, have been identified and may lead to postoperative failure or poor outcomes. PURPOSE While a large number of risk factors have been identified, significant heterogeneity exists in evaluating and reporting these risk factors in the literature. The goal of this study was to perform a systematic review to determine risk factors associated with worse outcomes after MPFL reconstruction and their consistency of being controlled for or analyzed among studies. STUDY DESIGN Systematic review; Level of evidence, 4. METHODS A systematic review of the literature was performed using the MEDLINE database to identify relevant clinical outcome studies after MPFL reconstruction for recurrent patellar instability. Eligible studies were evaluated for risk factors that were associated with MPFL failure, defined as recurrent instability or lack of improvement on patient-reported outcome (PRO) scores. Each study was then evaluated for inclusion of these risk factors. RESULTS Ten studies were included in the final analysis, comprising 1287 knees from 1275 patients who underwent isolated MPFL reconstruction. Of these 10 studies, 8 defined outcomes based on PROs and 3 defined outcomes based on postoperative recurrent instability (1 study included both outcomes). In the PRO failure group, 12 risk factors were found across all studies: trochlear dysplasia, trochlear bump height, elevated TT-TG, patellar tilt, hyperlaxity, age at first dislocation, age at surgery, body mass index, bilateral symptoms, WARPS/STAID score (weak atraumatic, risky anatomy, pain, and subluxation/strong, traumatic, anatomy normal, instability, and dislocation), femoral tunnel malposition, and femoral tunnel widening. In the recurrent instability failure group, 7 risk factors were found across all studies: trochlear dysplasia, bump height, patella alta, higher sulcus angle, higher congruence angle, preoperative J sign, and femoral tunnel malposition. Trochlear dysplasia and femoral tunnel malposition were consistently cited in several studies as risk factors for worse PROs and higher rates of recurrent instability. Patella alta was indicated as a significant risk factor for recurrent instability in 1 of 2 studies analyzing postoperative instability failures and was not associated with worse PROs in any of the studies analyzed. Similarly, elevated TT-TG distance was not a significant risk factor in any of the studies that analyzed recurrent instability as the failure endpoint. CONCLUSION While various risk factors are postulated to affect outcomes after MPFL reconstruction, there remains inconsistency within the literature regarding the inclusion of all risk factors in a given analysis. Furthermore, the significance of these risk factors varies among studies in terms of whether they affect postoperative outcomes. We found that more severe trochlear dysplasia (types C and D) and femoral tunnel malposition (>10 mm from Schöttle's point) appear to have the most consistent effect on producing higher rates of recurrent dislocation as well as worse PROs. Despite this, the role of concomitant bony procedures to adjust certain pathoanatomic risk factors in addition to MPFL reconstruction remains unknown. Future high-level studies must be conducted that respect the multifactorial nature of patellar instability and should analyze all risk factors (demographic, anatomic, and radiographic) reported to affect outcomes.
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Affiliation(s)
- William M Cregar
- Department of Orthopaedics, Rush University Medical Center, Chicago, Illinois, USA
| | - Hailey P Huddleston
- Department of Orthopaedics, Rush University Medical Center, Chicago, Illinois, USA
| | - Stephanie E Wong
- Department of Orthopaedics, Rush University Medical Center, Chicago, Illinois, USA
| | - Jack Farr
- OrthoIndy, Cartilage Restoration Center of Indiana, Greenwood, Indiana, USA
| | - Adam B Yanke
- Department of Orthopaedics, Rush University Medical Center, Chicago, Illinois, USA
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Lee JI, Jaffar MSA, Choi HG, Kim TW, Lee YS. Effect of Isolated Medial Patellofemoral Ligament Reconstruction in Patellofemoral Instability Regardless of Predisposing Factors. J Knee Surg 2022; 35:299-307. [PMID: 32659817 DOI: 10.1055/s-0040-1713898] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The purpose of this study was to evaluate the outcomes of isolated medial patellofemoral ligament (MPFL) reconstruction, regardless of the presence of predisposing factors. A total of 21 knees that underwent isolated MPFL reconstruction from March 2014 to August 2017 were included in this retrospective series. Radiographs of the series of the knee at flexion angles of 20, 40, and 60 degrees were acquired. The patellar position was evaluated using the patellar tilt angle, sulcus angle, congruence angle (CA), and Caton-Deschamps and Blackburne-Peel ratios. To evaluate the clinical outcome, the preoperative and postoperative International Knee Documentation Committee (IKDC) and Lysholm knee scoring scales were analyzed. To evaluate the postoperative outcomes based on the predisposing factors, the results were separately analyzed for each group. Regarding radiologic outcomes, 20-degree CA was significantly reduced from 10.37 ± 5.96° preoperatively to -0.94 ± 4.11° postoperatively (p = 0.001). In addition, regardless of the predisposing factors, delta values of pre- and postoperation of 20-degree CA were not significantly different in both groups. The IKDC score improved from 53.71 (range: 18-74) preoperatively to 94.71 (range: 86-100) at the last follow-up (p = 0.004), and the Lysholm score improved from 54.28 (range: 10-81) preoperatively to 94.14 (range: 86-100) at the last follow-up (p = 0.010). Isolated MPFL reconstruction provides a safe and effective treatment for patellofemoral instability, even in the presence of mild predisposing factors, such as trochlear dysplasia, increased patella height, increased TT-TG distance, or valgus alignment. This is a Level 4, case series study.
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Affiliation(s)
- Jae Ik Lee
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | | | - Han Gyeol Choi
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Tae Woo Kim
- Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Dongjak-gu, Seoul, South Korea
| | - Yong Seuk Lee
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
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Platt BN, Bowers LC, Magnuson JA, Marx SM, Liu JN, Farr J, Stone AV. Return to Sport After Medial Patellofemoral Ligament Reconstruction: A Systematic Review and Meta-analysis. Am J Sports Med 2022; 50:282-291. [PMID: 33720789 DOI: 10.1177/0363546521990004] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Patellar instability is frequently encountered in the athletic population. Medial patellofemoral ligament (MPFL) reconstruction is a common strategy to treat recurrent patellar dislocation and demonstrates good clinical outcomes. PURPOSE/HYPOTHESIS The purpose was to examine return to sport after MPFL reconstruction for patellar instability. We hypothesized that patients would resume athletic activity at a high rate and that a large proportion would return to their preoperative level of performance. STUDY DESIGN Systematic review and meta-analysis. METHODS A systematic review of the literature was conducted using PubMed and Cochrane Library databases to identify articles reporting return to sport after MPFL reconstruction for recurrent patellar dislocation. Athletes were defined as those reporting a preoperative sport. A random-effects model was used to evaluate return to sport rates, subsequent level, and rate of instability recurrence. Meta-regression was used to compare return to sport rates in patients undergoing MPFL reconstruction without osteotomy compared with those treated with simultaneous tibial tubercle osteotomy or trochleoplasty. RESULTS In total, 23 articles met inclusion criteria after full-text review. A total of 930 patients were analyzed, including 786 athletes. Women represented 61.3% of all patients. The overall mean age was 21.1 years (range, 9.5-60.0 years), with a mean follow-up time of 3.0 years (range, 0.8-8.5 years). The return to sport rate was 92.8% (95% CI, 86.4-97.6). Patients returned to or surpassed their preoperative level of activity in 71.3% (95% CI, 63.7-78.4) of cases. An osteotomy was performed on 10.5% of athletes. Return to sport did not differ significantly in patients undergoing MPFL reconstruction without osteotomy versus those receiving additional osteotomy (95.4% vs 86.9%; P = .22). Patients returned to sport at a mean of 6.7 months (range, 3.0-6.4 months) postoperatively. Osteotomy did not affect return time. Complications occurred at an overall rate of 8.8%. The most common complication was recurrence of instability (1.9%; 95% CI, 0.4-4.0). The Kujala score was reported by 13 studies, with pre- and postoperative combined means of 60.3 and 90.0, respectively. CONCLUSION MPFL reconstruction is an effective and reliable treatment in the setting of patellofemoral instability. Surgeons can counsel their patients that they can expect a high rate of return to sport after MPFL reconstruction surgery alone or with concomitant osteotomy.
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Affiliation(s)
- Brooks N Platt
- Division of Sports Medicine, Department of Orthopaedic Surgery, University of Kentucky, Lexington, Kentucky, USA
| | - Lucy C Bowers
- Division of Sports Medicine, Department of Orthopaedic Surgery, University of Kentucky, Lexington, Kentucky, USA
| | - Justin A Magnuson
- Division of Sports Medicine, Department of Orthopaedic Surgery, University of Kentucky, Lexington, Kentucky, USA
| | - Sean M Marx
- Division of Sports Medicine, Department of Orthopaedic Surgery, University of Kentucky, Lexington, Kentucky, USA
| | - Joseph N Liu
- Department of Orthopaedic Surgery, Loma Linda University Medical Center, Loma Linda, California, USA
| | - Jack Farr
- OrthoIndy, Cartilage Restoration Center of Indiana, Greenwood, Indiana, USA
| | - Austin V Stone
- Division of Sports Medicine, Department of Orthopaedic Surgery, University of Kentucky, Lexington, Kentucky, USA
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Allahabadi S, Pandya NK. Allograft Medial Patellofemoral Ligament Reconstruction in Adolescent Patients Results in a Low Recurrence Rate of Patellar Dislocation or Subluxation at Midterm Follow-Up. Arthroscopy 2022; 38:128-138. [PMID: 34000323 DOI: 10.1016/j.arthro.2021.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 04/14/2021] [Accepted: 05/06/2021] [Indexed: 02/02/2023]
Abstract
PURPOSE To evaluate rates of recurrent instability in adolescent patients with medial patellofemoral ligament (MPFL) reconstruction with allograft and associations of anatomic risk factors with complications. METHODS A retrospective review identified patients of a single surgeon who underwent MPFL reconstruction with allograft for recurrent patellar instability with minimum 2-year follow-up. Surgical management was recommended after a minimum 6 weeks of nonoperative management and included MPFL reconstruction with gracilis allograft using a double-bundle technique. Preoperative radiographs were evaluated to assess physeal closure, lower-extremity alignment, trochlear morphology, and Insall-Salvati and Caton-Deschamps ratios. Magnetic resonance images were reviewed to evaluate the MPFL, trochlear morphology, and tibial tubercle trochlear groove distance (TT-TG). Descriptive statistics were used to characterize data. The primary outcome was recurrent instability. RESULTS 20 patients (24 knees; 18 knees in 14 females and 6 knees in 6 males; average age 15.7 years; range 11.5 to 19.6) underwent MPFL reconstruction with allograft (mean ± standard deviation follow-up 5.2 ± 1.7 years; range 2.2 to 8.1). Physes were open in 9 knees. The Insall-Salvati ratio was 1.09 ± 0.16, and the Caton-Deschamps index was 1.17 ± 0.15. Preoperatively, 19 patients were noted to have trochlear dysplasia, and TT-TG was 15.3 ± 3.9 mm. Three of 4 knees (16.7%) with non-hardware-related complications had open physes: 3 (12.5%) had recurrent instability, 2 of which underwent subsequent operation, and 1 sustained a patella fracture after a fall, requiring open reduction and internal fixation. The average Insall-Salvati ratio of these 4 patients was 1.21 ± 0.20, Caton-Deschamps index was 1.18 ± 0.17, and TT-TG was 17.5 ± 3.3 mm, none of which were statistically different from the group without complications. There were no clinically noted growth disturbances postoperatively. CONCLUSIONS MPFL reconstruction using allograft tissue may be performed safely in the pediatric and adolescent population with good outcomes at midterm follow-up, few complications, and a low rate of recurrent instability. LEVEL OF EVIDENCE IV, case series.
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Affiliation(s)
- Sachin Allahabadi
- Department of Orthopaedic Surgery, University of California, San Francisco, San Francisco, California, U.S.A
| | - Nirav K Pandya
- Department of Orthopaedic Surgery, Benioff Children's Hospital Oakland, University of California, San Francisco, San Francisco, California, U.S.A..
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Migliorini F, Baroncini A, Eschweiler J, Tingart M, Maffulli N. Interference screws vs. suture anchors for isolated medial patellofemoral ligament femoral fixation: A systematic review. JOURNAL OF SPORT AND HEALTH SCIENCE 2022; 11:123-129. [PMID: 33259964 PMCID: PMC8847917 DOI: 10.1016/j.jshs.2020.11.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/02/2020] [Accepted: 10/19/2020] [Indexed: 06/12/2023]
Abstract
PURPOSE The present study aimed to systematically review and compare 2 femoral autograft fixation techniques, namely, interference screws and suture anchors, for isolated medial patellofemoral ligament reconstruction in patients with recurrent patellofemoral instability at mid- to long-term follow-up. METHODS A literature search was performed in September 2020. All studies reporting the outcomes of primary isolated medial patellofemoral ligament reconstruction for recurrent patellofemoral instability were considered for inclusion. Only studies reporting the type of femoral autograft fixation under examination were considered. Studies reporting data from patients with elevated tibial tuberosity-tibial groove, patella alta, and/or Dejour's trochlear dysplasia types C and D, were not included. Only articles reporting data with a minimum follow-up period of 18 months were considered. RESULTS Data from 19 studies (615 patients) were retrieved. The overall age was 24.4 ± 6.7 years (mean ± SD). The mean follow-up was 46.5 ± 20.9 months. There were 76 patients in the anchor group and 539 in the screw group. Comparability was found with regard to age and follow-up duration between the 2 study groups. There was comparability between the Kujala, Lysholm, and Tegner scores at baseline. At the last follow-up, no worthy differences were found in terms of mean Kujala (+2.1%; p = 0.04), Lysholm (+1.7%; p = 0.05), and Tegner (+15.8%; p = 0.05) scores. Although complications occurred almost exclusively in the screw cohort, no statistically significant difference was found. CONCLUSION Femoral autograft fixation through interference screws or suture anchors report similar clinical scores and rate of apprehension test, persistent joint instability, re-dislocations, and revisions. These results must be interpreted within the limitations of the present study.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedics, University Clinic Aachen, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University Clinic, Aachen 52074, Germany.
| | - Alice Baroncini
- Department of Orthopaedics, University Clinic Aachen, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University Clinic, Aachen 52074, Germany
| | - Jörg Eschweiler
- Department of Orthopaedics, University Clinic Aachen, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University Clinic, Aachen 52074, Germany
| | - Markus Tingart
- Department of Orthopaedics, University Clinic Aachen, Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen University Clinic, Aachen 52074, Germany
| | - Nicola Maffulli
- Department of Medicine, Surgery and Dentistry, University of Salerno, Baronissi 84081, Italy; School of Pharmacy and Bioengineering, School of Medicine, Keele University, Stoke on Trent ST4 7QB, UK; Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Dentistry, Mile End Hospital, Queen Mary University of London, London E1 4DG, UK
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Migliorini F, Marsilio E, Cuozzo F, Oliva F, Eschweiler J, Hildebrand F, Maffulli N. Chondral and Soft Tissue Injuries Associated to Acute Patellar Dislocation: A Systematic Review. Life (Basel) 2021; 11:life11121360. [PMID: 34947891 PMCID: PMC8706453 DOI: 10.3390/life11121360] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/24/2021] [Accepted: 12/02/2021] [Indexed: 01/03/2023] Open
Abstract
INTRODUCTION Chondral and soft tissue injuries can be associated with first time patellar dislocation, but it is unclear how common they are, and which tissues are affected. A systematic review of the literature was performed to investigate the frequency, location, and extent of chondral and medial patellofemoral ligament (MPFL) injuries in patients following first time patellar dislocation. METHODS This systematic review was conducted according to the PRISMA guidelines. PubMed, Google Scholar, Embase, and Web of Science databases were accessed in November 2021. All the published clinical studies reporting the frequency, location, and extent of soft tissue lesions following first time patellar dislocation were accessed. Studies reporting data on habitual, congenital, or recurrent patellofemoral instability were excluded. RESULTS Data from 42 articles (2254 patients, mean age 21.6 ± 7.3 years) were retrieved. Ninety-eight percent of patients who experienced first time patellar dislocation demonstrated MPFL rupture at MRI. Forty-eight percent of MPFL ruptures were located at the patellar side, 34% at the femoral insertion site, and 18% in the midportion. Eighty-five percent of patients showed signs of patellar chondral damage at MRI, and trochlear chondral injuries were evidenced in 47% of patients. Intra-articular loose bodies were observed in 11.5% of patients. At arthroscopy, the medial facet and the crest of the patella more commonly exhibited chondral lesions than the lateral facet and femoral trochlea. CONCLUSIONS Most patients suffer chondral damage and MPFL tears following after a first time patellar dislocation.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopedic, Trauma, and Reconstructive Surgery, RWTH Aachen University Hospital, 52064 Aachen, Germany; (J.E.); (F.H.)
- Correspondence: ; Tel.: +49-0241-80-35529
| | - Emanuela Marsilio
- Department of Orthopaedics, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (E.M.); (F.C.); (F.O.); (N.M.)
| | - Francesco Cuozzo
- Department of Orthopaedics, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (E.M.); (F.C.); (F.O.); (N.M.)
| | - Francesco Oliva
- Department of Orthopaedics, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (E.M.); (F.C.); (F.O.); (N.M.)
| | - Jörg Eschweiler
- Department of Orthopedic, Trauma, and Reconstructive Surgery, RWTH Aachen University Hospital, 52064 Aachen, Germany; (J.E.); (F.H.)
| | - Frank Hildebrand
- Department of Orthopedic, Trauma, and Reconstructive Surgery, RWTH Aachen University Hospital, 52064 Aachen, Germany; (J.E.); (F.H.)
| | - Nicola Maffulli
- Department of Orthopaedics, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, Italy; (E.M.); (F.C.); (F.O.); (N.M.)
- Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Dentistry, Mile End Hospital, Queen Mary University of London, 275 Bancroft Road, London E1 4DG, UK
- School of Pharmacy and Bioengineering, Keele University Faculty of Medicine, Thornburrow Drive, Stoke on Trent ST5 5BG, UK
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Paul RW, Brutico JM, Wright ML, Erickson BJ, Tjoumakaris FP, Freedman KB, Bishop ME. Strong Agreement Between Magnetic Resonance Imaging and Radiographs for Caton-Deschamps Index in Patients With Patellofemoral Instability. Arthrosc Sports Med Rehabil 2021; 3:e1621-e1628. [PMID: 34977613 PMCID: PMC8689203 DOI: 10.1016/j.asmr.2021.07.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 07/24/2021] [Indexed: 01/17/2023] Open
Abstract
PURPOSE To compare the measurements of the Caton-Deschamps index on preoperative magnetic resonance imaging and radiographs of patients undergoing operative management of patellar instability. METHODS Patients who underwent primary medial patellofemoral ligament reconstruction and/or tibial tubercle osteotomy between January 2015 and November 2019 were assessed. Caton-Deschamps indices were measured by 3 independent reviewers on both radiographs and magnetic resonance imaging. Intra- and interclass correlation coefficients and a Bland-Altman analysis were calculated to assess inter-rater reliability and measurement agreement between radiographic and magnetic resonance imaging. RESULTS Seventy-two patients (73 knees) were identified. The average Caton-Deschamps index was 1.23 ± 0.18 on radiograph and 1.26 ± 0.18 on magnetic resonance imaging. Strong inter-rater reliability was observed between reviewers for both radiographic and magnetic resonance imaging Caton-Deschamps indices (intraclass correlation coefficients 0.700 and 0.715, respectively). Pooled observer measurements revealed a moderate agreement between radiographic and magnetic resonance imaging for patella to tibia distance, weak agreement for patellar articular cartilage distance, and strong agreement for the Caton-Deschamps index (intraclass correlation coefficients 0.687, 0.485, and 0.749, respectively). Bland-Altman analysis demonstrated a mean difference in Caton-Deschamps index of -0.03 ± 0.15 (95% limits of agreement: -0.29 to 0.23) between radiographic and magnetic resonance imaging, meaning that Caton-Deschamps indices were on average 0.03 lower on radiographic than on magnetic resonance imaging. CONCLUSIONS The Caton-Deschamps index has strong agreement between radiographic and magnetic resonance imaging in patients undergoing patellar stabilization surgery. Either modality can be reliably used to preoperatively assess patellar height. LEVEL OF EVIDENCE Level IV, diagnostic case series.
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Affiliation(s)
- Ryan W Paul
- Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, U.S.A
| | - Joseph M Brutico
- Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, U.S.A
| | | | | | | | - Kevin B Freedman
- Rothman Orthopaedic Institute, Philadelphia, Pennsylvania, U.S.A
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Hadley CJ, Tucker BS, Lombardi NJ, Eck B, Pepe MD, Frederick RW, Tjoumakaris FP. Combined MPFL reconstruction and tibial tubercle osteotomy for patellar instability: A retrospective review of 23 patients. J Orthop 2021; 28:49-52. [PMID: 34819714 DOI: 10.1016/j.jor.2021.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 11/03/2021] [Indexed: 11/27/2022] Open
Abstract
The primary objective of this retrospective study is to compare patient outcomes following a combined approach (MPFL reconstruction and TTT) to outcomes reported in the literature by patients who required either only an isolated TTT procedure to treat pathologic lateral patellar instability or isolated MPFL reconstruction to treat patellar dislocation due to MPFL insufficiency. Twenty-three patients (74%) were available for follow-up and are included in our analysis. MPFL reconstruction combined with TTT has a high rate of success for patients presenting with patellar instability and extensor mechanism mal-alignment. The risk of recurrence with this technique was low (4.3%).
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Affiliation(s)
- Christopher J Hadley
- Rothman Orthopaedic Institute, 2500 English Creek Avenue, Building 1300, Egg Harbor Township, NJ, 08234, USA
| | - Bradford S Tucker
- Rothman Orthopaedic Institute, 2500 English Creek Avenue, Building 1300, Egg Harbor Township, NJ, 08234, USA
| | - Nicholas J Lombardi
- Rothman Orthopaedic Institute, 2500 English Creek Avenue, Building 1300, Egg Harbor Township, NJ, 08234, USA
| | - Brandon Eck
- Rothman Orthopaedic Institute, 2500 English Creek Avenue, Building 1300, Egg Harbor Township, NJ, 08234, USA
| | - Matthew D Pepe
- Rothman Orthopaedic Institute, 2500 English Creek Avenue, Building 1300, Egg Harbor Township, NJ, 08234, USA
| | - Robert W Frederick
- Rothman Orthopaedic Institute, 2500 English Creek Avenue, Building 1300, Egg Harbor Township, NJ, 08234, USA
| | - Fotios P Tjoumakaris
- Rothman Orthopaedic Institute, 2500 English Creek Avenue, Building 1300, Egg Harbor Township, NJ, 08234, USA
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McCarthy MI, Hinckel BB, Arendt EA, Chambers CC. Putting it all Together: Evaluating Patellar Instability Risk Factors and Revisiting the "Menu". Clin Sports Med 2021; 41:109-121. [PMID: 34782068 DOI: 10.1016/j.csm.2021.07.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Management of the patient with multiple risk factors for recurrent patellar instability is complex. Surgeons must possess familiarity with the anatomic risk factors that are associated with first time and recurrent instability events and weigh them in the patient's individualized surgical "menu" options for surgical patellar stabilization. Addressing individual risk factors, pairing imaging findings with physical examination, and thoughts on prioritizing risk factors to determine which should be prioritized for surgical correction are discussed.
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Affiliation(s)
- Michaela I McCarthy
- Department of Orthopedic Surgery, University of Minnesota, 2450 Riverside Ave South, Suite R200 Minneapolis, MN 55454, USA
| | - Betina B Hinckel
- Department of Orthopaedic Surgery, William Beaumont Hospital, 10000 Telegraph Road, Suite 100, Taylor, MI 48180, USA; Oakland University, Rochester, Michigan, USA
| | - Elizabeth A Arendt
- Department of Orthopedic Surgery, University of Minnesota, 2450 Riverside Ave South, Suite R200 Minneapolis, MN 55454, USA.
| | - Caitlin C Chambers
- Department of Orthopedic Surgery, University of Minnesota, 2450 Riverside Ave South, Suite R200 Minneapolis, MN 55454, USA; TRIA Orthopedic Center, 155 Radio Drive, Woodbury, MN 55125, USA
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Vinod AV, Hollenberg AM, Kluczynski MA, Marzo JM. Ability of Medial Patellofemoral Ligament Reconstruction to Overcome Lateral Patellar Motion in the Presence of Trochlear Flattening: A Cadaveric Biomechanical Study. Am J Sports Med 2021; 49:3569-3574. [PMID: 34524034 DOI: 10.1177/03635465211041087] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Medial patellofemoral ligament (MPFL) reconstruction is an established operative procedure to restore medial restraining force in patients with patellar instability. In the setting of a shallow sulcus, it is unclear whether an isolated MPFL reconstruction is sufficient to restore patellofemoral stability. HYPOTHESIS Progressively increasing the sulcus angle would have an adverse effect on the ability of an MPFL reconstruction to restrain lateral patellar motion. STUDY DESIGN Controlled laboratory study. METHODS Seven fresh-frozen human cadaveric knees were harvested and prepared for experimentation. Each specimen was run through the following test conditions: native, lateral retinacular release, lateral retinacular repair, MPFL release, MPFL reconstruction, and MPFL reconstruction with trochlear flattening. Four 3-dimensional printed wedges (10°, 20°, 30°, and 40°) were created to insert beneath the native trochlea to raise the sulcus angle incrementally and simulate progressive trochlear flattening. For each test condition, the knee was positioned at 0°, 15°, 30°, and 45° of flexion, and the force required to displace the patella 1 cm laterally at 10 mm/s was measured. Group comparisons were made with repeated measures analysis of variance. RESULTS In the setting of an MPFL reconstruction, as the trochlear groove was incrementally flattened, the force required to laterally displace the patella progressively decreased. A 10° increase in the sulcus angle significantly reduced the force at 15° (P = .01) and 30° (P = .03) of knee flexion. The force required to laterally displace the patella was also significantly lower at all knee flexion angles after the addition of the 20°, 30°, and 40° wedges (P≤ .05). Specifically, a 20° increase in the sulcus angle reduced the force by 29% to 36%; a 30° increase, by 35% to 43%; and a 40° increase, by 40% to 47%. CONCLUSION Despite an MPFL reconstruction, the force required to laterally displace the patella decreased as the sulcus angle was increased in our cadaveric model. CLINICAL RELEVANCE An isolated MPFL reconstruction may not be sufficient to restore patellar stability in the setting of a shallow or flat trochlea. Patients with an abnormal sulcus angle may have recurrent instability postoperatively if treated with an isolated MPFL reconstruction.
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Affiliation(s)
- Amrit V Vinod
- Department of Orthopaedics, Jacobs School of Medicine and Biomedical Science, University at Buffalo, The State University of New York at Buffalo, Buffalo, New York, USA
| | - Alex M Hollenberg
- Department of Orthopaedics, Jacobs School of Medicine and Biomedical Science, University at Buffalo, The State University of New York at Buffalo, Buffalo, New York, USA
| | - Melissa A Kluczynski
- Department of Orthopaedics, Jacobs School of Medicine and Biomedical Science, University at Buffalo, The State University of New York at Buffalo, Buffalo, New York, USA
| | - John M Marzo
- Department of Orthopaedics, Jacobs School of Medicine and Biomedical Science, University at Buffalo, The State University of New York at Buffalo, Buffalo, New York, USA
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Kim JM, Sim JA, Yang H, Kim YM, Wang JH, Seon JK. Clinical Comparison of Medial Patellofemoral Ligament Reconstruction With or Without Tibial Tuberosity Transfer for Recurrent Patellar Instability. Am J Sports Med 2021; 49:3335-3343. [PMID: 34494477 DOI: 10.1177/03635465211037716] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND No clear guidelines or widespread consensus has defined a threshold value of tibial tuberosity-trochlear groove (TT-TG) distance for choosing the appropriate surgical procedures when additional tibial tuberosity osteotomy (TTO) should be added to augment medial patellofemoral ligament (MPFL) reconstruction for recurrent patellar instability. PURPOSE To compare the clinical outcomes between MPFL reconstruction and MPFL reconstruction with TTO for patients who have patellar instability with a TT-TG distance of 15 to 25 mm. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS We retrospectively analyzed 81 patients who underwent surgical treatment using either MPFL reconstruction or MPFL reconstruction with TTO for recurrent patellar instability with a TT-TG distance of 15 to 25 mm; the mean follow-up was 25.2 months (range, 12.0-53.0 months). The patients were divided into 2 groups: isolated MPFL reconstruction (iMPFL group; n = 36) performed by 2 surgeons and MPFL reconstruction with TTO (TTO group; n = 45) performed by another 2 surgeons. Clinical outcomes were assessed using the Kujala score, Knee injury and Osteoarthritis Outcome Score, and Tegner activity score. Radiological parameters, including patellar height, TT-TG distance, patellar tilt, and congruence angle were compared between the 2 groups. Functional failure based on clinical apprehension sign, repeat subluxation or dislocation, and subjective instability and complications was assessed at the final follow-up. We also compared clinical outcomes based on subgroups of preoperative TT-TG distance (15 mm ≤ TT-TG ≤ 20 mm vs 20 mm < TT-TG ≤ 25 mm). RESULTS All of the clinical outcome parameters significantly improved in both groups at the final follow-up (P < .001), with no significant differences between groups. The radiological parameters also showed no significant differences between the 2 groups. The incidence of functional failure was similar between the 2 groups (3 failures in the TTO group and 2 failures in the iMPFL group; P = .42). In the TTO group, 1 patient experienced a repeat dislocation postoperatively and 2 patients had subjective instability; in the iMPFL group, 2 patients had subjective instability. The prevalence of complications did not differ between the 2 groups (P = .410). In the subgroup analysis based on TT-TG distance, we did not note any differences in clinical outcomes between iMPFL and TTO groups in subgroups of 15 mm ≤ TT-TG ≤ 20 mm and 20 mm < TT-TG ≤ 25 mm. CONCLUSION MPFL reconstruction with and without TTO provided similar, satisfactory clinical outcomes and low redislocation rates for patients who had patellar instability with a TT-TG distance of 15 to 25 mm, without statistical difference. Thus, our findings suggest that iMPFL reconstruction is a safe and reliable treatment for patients with recurrent patellar dislocation with a TT-TG distance of 15 to 25 mm, without the disadvantages derived from TTO.
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Affiliation(s)
- Jong-Min Kim
- Department of Orthopaedic Surgery, University of Ulsan, College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Jae-Ang Sim
- Department of Orthopaedic Surgery, Gil Hospital, Gachon University of Medicine and Science, Incheon, Republic of Korea
| | - HongYeol Yang
- Department of Orthopedic Surgery, Chonnam National University Medical School and Hospital, Hwasun, Republic of Korea
| | - Young-Mo Kim
- Department of Orthopaedic Surgery, ChoongNam National University, College of Medicine and Hospital, Daejeon, Republic of Korea
| | - Joon-Ho Wang
- Department of Orthopaedic Surgery, Sungkyunkwan University, College of Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Jong-Keun Seon
- Department of Orthopedic Surgery, Chonnam National University Medical School and Hospital, Hwasun, Republic of Korea
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Tanaka MJ, Cosgarea AJ, Forman JM, Elias JJ. Factors Influencing Graft Function following MPFL Reconstruction: A Dynamic Simulation Study. J Knee Surg 2021; 34:1162-1169. [PMID: 32143217 PMCID: PMC7483749 DOI: 10.1055/s-0040-1702185] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Medial patellofemoral ligament (MPFL) reconstruction is currently the primary surgical procedure for treating recurrent lateral patellar instability. The understanding of graft function has largely been based on studies performed with normal knees. The current study was performed to characterize graft function following MPFL reconstruction, focusing on the influence of pathologic anatomy on graft tension, variations with knee flexion, and the influence on patellar tracking. Knee squatting was simulated with 15 multibody dynamic simulation models representing knees being treated for recurrent lateral patellar instability. Squatting was simulated in a preoperative condition and following MPFL reconstruction with a hamstrings tendon graft set to allow 0.5 quadrants of lateral patellar translation with the knee at 30 degrees of flexion. Linear regressions were performed to relate maximum tension in the graft to parameters of knee anatomy. Repeated measures comparisons evaluated variations in patellar tracking at 5-degree increments of knee flexion. Maximum graft tension was significantly correlated with a parameter characterizing lateral position of the tibial tuberosity (maximum lateral tibial tuberosity to posterior cruciate ligament attachment distance, r 2 = 0.73, p < 0.001). No significant correlations were identified for parameters related to trochlear dysplasia (lateral trochlear inclination) or patella alta (Caton-Deschamps index and patellotrochlear index). Graft tension peaked at low flexion angles and was minimal by 30 degrees of flexion. MPFL reconstruction decreased lateral patellar shift (bisect offset index) compared with preoperative tracking at all flexion angles from 0 to 50 degrees of flexion, except 45 degrees. At 0 degrees, the average bisect offset index decreased from 0.81 for the preoperative condition to 0.71. The results indicate that tension within an MPFL graft increases with the lateral position of the tibial tuberosity. The graft tension peaks at low flexion angles and decreases lateral patellar maltracking. The factors that influence graft function following MPFL reconstruction need to be understood to limit patellar maltracking without overloading the graft or over constraining the patella.
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Affiliation(s)
- Miho J. Tanaka
- Department of Orthopaedic Surgery, Massachusetts General Hospital Harvard Medical School, Boston, MA
| | - Andrew J. Cosgarea
- Department of Orthopaedic Surgery, Johns Hopkins University, Baltimore, MD
| | - Jared M. Forman
- Department of Orthopaedic Surgery, Johns Hopkins University, Baltimore, MD
| | - John J. Elias
- Department of Research, Cleveland Clinic Akron General, Akron, OH
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Su P, Liu X, Jian N, Li J, Fu W. Clinical outcomes and predictive factors for failure with MPFL reconstruction combined with tibial tubercle osteotomy and lateral retinacular release for recurrent patellar instability. BMC Musculoskelet Disord 2021; 22:632. [PMID: 34289826 PMCID: PMC8296593 DOI: 10.1186/s12891-021-04508-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 07/02/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Medial patellofemoral ligament (MPFL) reconstruction combined with tibial tubercle osteotomy (TTO) and lateral retinacular release (LRR) is one of the main treatment methods for patellar instability. So far, few studies have evaluated the clinical effectiveness and assessed potential risk factors for recurrent patellar instability. PURPOSE To report the clinical outcomes of MPFL reconstruction combined with TTO and LRR at least three years after operation and to identify potential risk factors for recurrent patellar instability. METHODS A retrospective analysis of medical records for patients treated with MPFL, TTO and LRR from 2013 to 2017 was performed. Preoperative assessment for imaging examination included trochlear dysplasia according to Dejour classification, patella alta with the Caton-Deschamps index (CDI), tibial tubercle-trochlear groove distance. Postoperative assessment for knee function included Kujala, IKDC and Tegner scores. Failure rate which was defined by a postoperative dislocation was also reported. RESULTS A total of 108 knees in 98 patients were included in the study. The mean age at operation was 19.2 ± 6.1 years (range, 13-40 years), and the mean follow-up was 61.3 ± 15.4 months (range, 36-92 months). All patients included had trochlear dysplasia (A, 24%; B, 17%; C, 35%; D, 24%), and 67% had patellar alta. The mean postoperative scores of Tegner, Kujala and IKDC were 5.3 ± 1.3 (2-8), 90.5 ± 15.5 (24-100) and 72.7 ± 12.1 (26-86). Postoperative dislocation happened in 6 patients (5.6%). Female gender was a risk factor for lower IKDC (70.7 vs 78.1, P = 0.006), Tegner (5.1 vs 6.0, P = 0.006) and Kujala (88.2 vs 96.6, P = 0.008). Age (p = 0.011) and trochlear dysplasia (p = 0.016) were considered to be two failure factors for MPFL combined with TTO and LRR. CONCLUSION As a surgical method, MPFL combined with TTO and LRR would be a reliable choice with a low failure rate (5.6%). Female gender was a risk factor for worse postoperative outcomes. Preoperative failure risk factors in this study were age and trochlear dysplasia. LEVEL OF EVIDENCE Level IV; Case series.
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Affiliation(s)
- Peng Su
- Department of Orthopaedic Surgery, West China Hospital, Sichuan University, 37 Guoxue lane, Wuhou District, Chengdu, China
| | - Xiumin Liu
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Lane, Wuhou District, Chengdu, China
| | - Nengri Jian
- Department of Radiology, West China Hospital, Sichuan University, 37 Guoxue Lane, Wuhou District, Chengdu, China
| | - Jian Li
- Department of Orthopaedic Surgery, West China Hospital, Sichuan University, 37 Guoxue lane, Wuhou District, Chengdu, China.
| | - Weili Fu
- Department of Orthopaedic Surgery, West China Hospital, Sichuan University, 37 Guoxue lane, Wuhou District, Chengdu, China.
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Outcomes of MPFL reconstruction with tibial tubercle transfer for recurrent patellar instability with high grade trochlear dysplasia in Indian population. J Clin Orthop Trauma 2021; 20:101490. [PMID: 34290957 PMCID: PMC8274292 DOI: 10.1016/j.jcot.2021.101490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/27/2021] [Accepted: 06/27/2021] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Patellar instability is a painful condition which affects the quality of life and mobility of young individuals. The aim of this study is to observe the results of medial patello-femoral ligament reconstruction with hamstring autograft along with a modified Fulkerson osteotomy, for recurrent instability of patella with high-grade trochlear dysplasia in Indian population. MATERIALS & METHODS We conducted a prospective observational study of 26 knees (21 patients) who attended our outpatient department from June 2014 to February 2019, with recurrent instability of the patella and high-grade trochlear dysplasia. All knees were treated with MPFL reconstruction with hamstring autograft and modified Fulkerson osteotomy. RESULTS The mean follow-up period was 30 months (range: 24-50). The mean Lysholm scores improved from 49.9 (range: 30-63) preoperatively to 82.5 (range: 51-100) (p < 0.05), Kujala scores from 55.5 (36-67) to 85.9 (55-100) and International Knee Documentation Committee (IKDC) scores from 50.2 (31.6-62.3) to 82.9 (54.7-98.3) (p < 0.05) at 2 years follow-up. TT-TG distance decreased from 21.2 mm (18-25) to 11.6 mm (10-13) (p < 0.05) and patellar tilt angle decreased from 24.2° (18°-35°) to 7.2° (5°-10°) (p < 0.05). One knee had superficial skin infection in immediate post-operative period. Three knees had postoperative stiffness, which improved on manipulation under anesthesia. Six knees had implant irritation from the osteotomy screws which were removed after bony union was achieved. Functional scores were low in two knees due to patello-femoral pain, but they did not have recurrent instability. CONCLUSION MPFL reconstruction with tibial tubercle transfer gives good functional outcomes in 92.3% patients with recurrent patellar instability, associated with high-grade trochlear dysplasia in Indian population.
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Shih SSW, Kuo CL, Lee DYH. MPFL reconstruction corrects patella alta: a cohort study. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2021; 32:883-889. [PMID: 34159482 DOI: 10.1007/s00590-021-03056-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 06/14/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE Patella alta is an established risk factor for recurrent lateral patella dislocations. Medial patellofemoral ligament (MPFL) reconstruction has been shown to reduce patella height. Our hypothesis is that isolated MPFL reconstruction corrects patella alta, thereby reducing the risk of recurrent patella dislocation. METHODS A prospective cohort study of 33 knees which underwent MPFL reconstruction for recurrent patella dislocation. The pre-operative and post-operative patella height and Kujala knee outcome scores, as well as tibial tuberosity-trochlear groove (TT-TG) distance, and the grade of trochlear dysplasia were recorded. RESULTS The mean age was 21.5 years (16-34 years). There was significant reduction in patella height in all patients (p < 0.001), a 67% normalisation of patella alta (CD ≥ 1.2) (p < 0.004), and improvement in the Kujala scores 57.1 (pre-operatively) to 94.8 (post-operatively, p < 0.0001). The recurrent dislocation rate was 3%. CONCLUSION MPFL reconstruction alone results in correction in patella alta and improvement in clinical outcomes.
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Affiliation(s)
| | - Chung Liang Kuo
- Department of Orthopaedic Surgery, Changi General Hospital, Singapore, Singapore
| | - Dave Yee Han Lee
- Division of Sports Medicine and Surgery, Department of Orthopaedic Surgery, National University Hospital, Singapore, Singapore
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Conservative versus tailored surgical treatment in patients with first time lateral patella dislocation: a randomized-controlled trial. J Orthop Surg Res 2021; 16:378. [PMID: 34120628 PMCID: PMC8199830 DOI: 10.1186/s13018-021-02513-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 06/01/2021] [Indexed: 11/12/2022] Open
Abstract
Background Patellar instability has a high incidence and occurs particularly in young and female patients. If the patella dislocates for the first time, treatment is usually conservative. However, this cautious approach carries the risk of recurrence and of secondary pathologies such as osteochondral fractures. Moreover, there is also risk of continuous symptoms apparent, as recurrent patella dislocation is related to patellofemoral osteoarthritis as well. An initial surgical treatment could possibly avoid these consequences of recurrent patella dislocation. Methods A prospective, randomized-controlled trial design is applied. Patients with unilateral first-time patella dislocation will be considered for participation. Study participants will be randomized to either conservative treatment or to a tailored patella stabilizing treatment. In the conservative group, patients will use a knee brace and will be prescribed outpatient physical therapy. The surgical treatment will be performed in a tailored manner, addressing the pathologic anatomy that predisposes to patella dislocation. The Banff Patellofemoral Instability-Instrument 2.0, recurrence rate, apprehension test, joint degeneration, and the Patella Instability Severity Score will serve as outcome parameters. The main analysis will focus on the difference in change of the scores between the two groups within a 2-year follow-up. Statistical analysis will use linear mixed models. Power analysis was done for the comparison of the two study arms at 2-year follow-up with regard to the BPII Score. A sample size of N = 64 per study arm (128 overall) provides 80% power (alpha = 0.05, two-tailed) to detect a difference of 0.5 standard deviations in a t-test for independent samples. Discussion Although several studies have already dealt with this issue, there is still no consensus on the ideal treatment concept for primary patellar dislocation. Moreover, most of these studies show a unified surgical group, which means that all patients were treated with the same surgical procedure. This is regarded as a major limitation as surgical treatment of patella dislocation should depend on the patient’s anatomic pathologies leading to patellar instability. To our knowledge, this is the first study investigating whether patients with primary patella dislocation are better treated conservatively or operatively with tailored surgery to stabilize the patella. Trial registration The study will be prospectively registered in the publicly accessible database www.ClinicalTrials.gov.
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Tan CMP, Zhu Y, Guo L, Loh SYJ. Medial patellofemoral ligament reconstruction with and without trochleoplasty for patients with patella instability-correlation of trochlear dysplasia and patient outcome, classification and outcome measure in the past decade-a systematic review. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2021; 32:595-607. [PMID: 34120236 DOI: 10.1007/s00590-021-03030-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 06/02/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE The primary aim of the study is to compare the patient outcome in medial patellofemoral ligament reconstruction (MPFLR) or MPFLR concurrent with trochleoplasty (MPFLR + TP) and correlate it with the degree of trochlear dysplasia (TD). The secondary aim is to review TD classification, outcome measure, chronological and geographical trend of such studies in the past decade. METHODS A systemic review of the literature in the past decade on studies of patients with patella instability and underwent either a MPFLR or MPFLR + TP. The degree of TD with the patient outcome was correlated and compared between the 2 groups. The TD classification, outcome measures, chronological and geographical trends of these studies were documented. RESULTS There is no statistical difference in the overall improvement in the compared outcome scores between the 2 groups. However, the MPFLR studies reported a total of 16 re-dislocation in contrast to none in the MPFLR + TP studies. The 24 selected studies in the current review utilized different TD classification as well as outcome measures. A more homogeneous subgroup of 12 studies utilized Dejour classification as well as Kujala score that enabled comparison and showed no significant difference in outcome. The highest number of MPFLR publications was in 2019 and was from North and South Americas, Asia and Europe. The MPFLR + TP studies were from Europe during 2013 to 2017. CONCLUSION Though there is an overall improvement in post-operative outcomes scores with no statistical significance between MPFLR and MPFLR + TP, the documented re-dislocations in the MPFLR studies suggested an undetermined zone where the choice of procedure could result in a different outcome. The current review did not show correlation between the degree of TD with the patient outcome to provide a clear indication for either procedure according to the degree of TD. The diverse TD classifications and varied outcome measures indicated the need for standardization and consistency in documentation to guide the treating clinician in the choice of procedure. MPFLR was more commonly performed and studied than MPFLR + TP in the past decade.
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Affiliation(s)
- Cheryl Marise Peilin Tan
- Department of Orthopaedic Surgery, Changi General Hospital, 2 Simei Street 3, Singapore, 529889, Singapore.
| | - Yanan Zhu
- Consortium for Clinical Research and Innovation, Singapore Clinical Research Institute, Singapore, Singapore
- , Cochrane, Singapore
| | - Liang Guo
- Consortium for Clinical Research and Innovation, Singapore Clinical Research Institute, Singapore, Singapore
- , Cochrane, Singapore
| | - Sir Young James Loh
- Department of Orthopaedic Surgery, Changi General Hospital, 2 Simei Street 3, Singapore, 529889, Singapore
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Migliorini F, Eschweiler J, Betsch M, Knobe M, Tingart M, Maffulli N. Prognostic factors for isolated medial patellofemoral ligament reconstruction: A systematic review. Surgeon 2021; 20:e112-e121. [PMID: 33962891 DOI: 10.1016/j.surge.2021.03.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 02/28/2021] [Accepted: 03/16/2021] [Indexed: 01/11/2023]
Abstract
BACKGROUND Evidence concerning the influence gender, age, and the time elapsed from the first dislocation to surgery in the outcomes of Medial Patella Femoral Ligament (MPFL) reconstruction are lacking. This systematic review was conducted to investigate whether patient characteristics have an influence in the clinical outcomes of MPFL reconstruction for patients with patellofemoral instability. MATERIAL AND METHODS This study followed the PRISMA guidelines. The main databases were accessed in February 2021. All the studies reporting outcomes of primary MPFL reconstruction in patients with recurrent patellofemoral instability were considered for inclusion. A multivariate analysis diagnostic tool was used to analyse the association between age, gender and time from injury to surgery and the surgical outcomes at last follow-up. RESULTS A total of 50 articles (2037 procedures) were included. The mean follow-up was 40.90 ± 24.8 months. The mean age was 23.6 ± 3.9 years. 64.3% (1309 of 2037 patients) were female. The mean time from injury to surgery was 64.5 ± 48.9 months. Women showed no statistically significant association with the Kujala score or complications. Older patients had a reduced risk to incur re-dislocations (P = 0.01) and revisions (P = 0.01). Longer time from injury to surgery was associated with greater risk to incur re-dislocations (P = 0.01), and with lower Kujala score (P < 0.0001). No other statistically significant association was evidenced. CONCLUSION The time span from the first patellar dislocation to the surgical reconstruction was a negative prognostic factor, while sex had no influence on surgical outcomes. The role of patients age on surgical outcomes remains unclear.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedic, University Clinic Aachen, RWTH Aachen University Clinic, Aachen, Germany.
| | - Jörg Eschweiler
- Department of Orthopaedic, University Clinic Aachen, RWTH Aachen University Clinic, Aachen, Germany.
| | - Marcel Betsch
- Department of Orthopedics and Trauma Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland.
| | - Matthias Knobe
- Department of Orthopaedics and Trauma Surgery, University Medical Centre Mannheim of the University Heidelberg, 68167 Mannheim, Germany
| | - Markus Tingart
- Department of Orthopaedic, University Clinic Aachen, RWTH Aachen University Clinic, Aachen, Germany.
| | - Nicola Maffulli
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, SA, Italy; School of Pharmacy and Bioengineering, Keele University School of Medicine, Thornburrow Drive, Stoke on Trent, England, UK; Queen Mary University of London, Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Mile End Hospital, 275 Bancroft Road, London, E1 4DG, England, UK.
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Abstract
Optimal treatment of patients with patellofemoral trochlear dysplasia and recurrent patellar instability requires in-depth understanding of this complex structural anomaly. An extensive review of the literature suggests that dysplasia occurs as a result of aberrant forces applied to the patellofemoral joint in the majority of cases. Evidence supports surgical stabilization that reconstructs the medial patellofemoral and/or medial quadriceps tendon-femoral ligament without added trochleoplasty in the majority of patients with trochlear dysplasia and recurrent patellar instability. Adding tibial tubercle transfer distally, medially, or anteromedially in those who need it to treat specific deficits in alignment or articular cartilage can be beneficial in selected patients with trochlear dysplasia and recurrent patellar instability. Trochleoplasty may be appropriate in those few cases in which permanent stable patellofemoral tracking cannot be restored otherwise, but the indications are not yet clear, particularly as trochleoplasty adds risk to the articular cartilage. Improved understanding of imaging techniques and 3-dimensional reproductions of dysplastic patellofemoral joints are useful in surgical planning for patients with recurrent patellar instability and trochlear dysplasia.
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Affiliation(s)
- Benjamin J Levy
- School of Medicine, University of Connecticut, Farmington, Connecticut, USA.,Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut, USA
| | - Miho J Tanaka
- Department of Orthopaedic Surgery, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - John P Fulkerson
- School of Medicine, University of Connecticut, Farmington, Connecticut, USA.,Department of Orthopaedic Surgery, Yale University, New Haven, Connecticut, USA
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Migliorini F, Oliva F, Maffulli GD, Eschweiler J, Knobe M, Tingart M, Maffulli N. Isolated medial patellofemoral ligament reconstruction for recurrent patellofemoral instability: analysis of outcomes and risk factors. J Orthop Surg Res 2021; 16:239. [PMID: 33823887 PMCID: PMC8022360 DOI: 10.1186/s13018-021-02383-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 03/24/2021] [Indexed: 12/17/2022] Open
Abstract
Background The medial patellofemoral ligament (MPFL) is always damaged after patellar dislocation. In selected patients, MPFL reconstruction is necessary to restore a correct patellar tracking. Despite the large number of different techniques reported to reconstruct the MPFL, there is no consensus concerning the optimal procedure, and debates is still ongoing. The present study analysed the results after isolated MPFL reconstruction in patients with patellofemoral instability. Furthermore, a subgroup analysis of patients presenting pathoanatomical risk factors was made. Methods In November 2020, the main electronic databases were accessed. All articles reporting the results of primary isolated MPFL reconstruction for recurrent patellofemoral instability were considered for inclusion. Only articles reporting a minimum 12-month follow-up were eligible. Results Data from a total of 1777 knees were collected. The mean age of the patients involved was 22.8 ± 3.4 years. The mean follow-up was 40.7 ± 25.8 months. Overall, the range of motion (+ 27.74; P < 0.0001) and all the other scores of interests improved at last follow-up: Kujala (+ 12.76; P = 0.0003), Lysholm (+ 15.69; P < 0.0001), Tegner score (+ 2.86; P = 0.006). Seventy-three of 1780 patients (4.1%) showed a positive apprehension test. Thirty of 1765 patients (1.7%) experienced re-dislocations, while 56 of 1778 patients (3.2%) showed persisting joint instability. Twenty-five of 1786 patients (1.4%) underwent revision surgeries. Conclusion Isolated MPFL reconstruction for recurrent patellofemoral instability provides reliable surgical outcomes. Patients with pathoanatomical predisposing factors reported worse surgical outcomes.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany.
| | - Francesco Oliva
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081, Baronissi, SA, Italy
| | | | - Jörg Eschweiler
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Matthias Knobe
- Department of Orthopedics and Trauma Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - Markus Tingart
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Nicola Maffulli
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081, Baronissi, SA, Italy.,Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Queen Mary University of London, Mile End Hospital, 275 Bancroft Road, London, E1 4DG, UK.,School of Pharmacy and Bioengineering, Keele University Faculty of Medicine, Thornburrow Drive, Stoke on Trent, UK
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Zhang Z, Song G, Zheng T, Ni Q, Feng H, Zhang H. The presence of a preoperative high-grade J-sign and femoral tunnel malposition are associated with residual graft laxity after MPFL reconstruction. Knee Surg Sports Traumatol Arthrosc 2021; 29:1183-1190. [PMID: 32627045 DOI: 10.1007/s00167-020-06140-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 06/30/2020] [Indexed: 11/28/2022]
Abstract
PURPOSE The purpose of this study was to analyse the risk factors associated with residual graft laxity after medial patellofemoral ligament reconstruction (MPFL-R) in patients with recurrent patellar dislocation (RPD). METHODS A total of 312 consecutive patients (354 knees) with clinically diagnosed RPD who underwent MPFL-R from 2011 to 2015 were retrospectively analysed. Postoperative MPFL graft stability was assessed with patellofemoral stress radiography, and if the patellar central ridge surpassed the apex of the lateral femoral trochlea, the reconstructed MPFL was defined as having residual graft laxity. Finally, 15 patients who exhibited MPFL residual graft laxity (study group) were matched in a 1:2 fashion to 30 control participants (control group), who showed a normal postoperative patellar stability on stress radiography. Preoperative three-dimensional computed tomography (3D-CT) was used to identify patients with a high-grade J-sign. Femoral tunnel position was assessed using 3D-CT to identify cases with femoral tunnel malposition. Potential predictors of MPFL residual graft laxity, including age, sex, a preoperative high-grade J-sign, femoral tunnel malposition, and several radiological parameters, were assessed by logistic regression analysis. RESULTS A preoperative high-grade J-sign was identified in 66.7% of the study group, which was significantly higher than that the 13.3% in the control group (P = 0.001). In addition, the presence of a preoperative high-grade J-sign (odds ratio, 11.9 [95% CI, 1.7-82.8]; P = 0.012) and femoral tunnel malposition (odds ratio, 8.2 [95% CI, 1.2-58.0]; P = 0.036) were determined to be independent risk factors associated with residual graft laxity after MPFL-R. CONCLUSION The presence of a preoperative high-grade J-sign and femoral tunnel malposition are associated with residual graft laxity after MPFL-R in patients with RPD. These results may provide additional information for counselling patients on residual graft laxity after MPFL-R. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- ZhiJun Zhang
- Sports Medicine Service, Beijing Jishuitan Hospital, No. 31, Xin Jie Kou East Street, Xi Cheng District, Beijing, China
| | - GuanYang Song
- Sports Medicine Service, Beijing Jishuitan Hospital, No. 31, Xin Jie Kou East Street, Xi Cheng District, Beijing, China
| | - Tong Zheng
- Sports Medicine Service, Beijing Jishuitan Hospital, No. 31, Xin Jie Kou East Street, Xi Cheng District, Beijing, China
| | - QianKun Ni
- Sports Medicine Service, Beijing Jishuitan Hospital, No. 31, Xin Jie Kou East Street, Xi Cheng District, Beijing, China
| | - Hua Feng
- Sports Medicine Service, Beijing Jishuitan Hospital, No. 31, Xin Jie Kou East Street, Xi Cheng District, Beijing, China.
| | - Hui Zhang
- Sports Medicine Service, Beijing Jishuitan Hospital, No. 31, Xin Jie Kou East Street, Xi Cheng District, Beijing, China.
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Manjunath AK, Hurley ET, Jazrawi LM, Strauss EJ. Return to Play After Medial Patellofemoral Ligament Reconstruction: A Systematic Review. Am J Sports Med 2021; 49:1094-1100. [PMID: 32866030 DOI: 10.1177/0363546520947044] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Medial patellofemoral ligament (MPFL) reconstruction is being performed more frequently in athletes experiencing recurrent patellar instability. PURPOSE/HYPOTHESIS The purpose was to systematically review the evidence in the orthopaedic sports medicine literature to determine both the rate and timing of return to play after MPFL reconstruction and the rate of further patellar instability. Our hypothesis was that there would be a high rate of return to play after MPFL reconstruction. STUDY DESIGN Systematic review. METHODS A systematic literature search was performed based on the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, which utilized EMBASE, MEDLINE, and the Cochrane Library databases. Inclusion criteria for literature included clinical studies reporting on return to play after MPFL reconstruction. Rate of return to play, level of return, timing of return, rate of recurrent instability, and patient-reported outcomes were evaluated. Statistical analysis was performed using SPSS. RESULTS Our review found 27 studies including 1278 patients meeting our inclusion criteria. The majority of patients were women (58%), and the total group had a mean age of 22.0 years and a mean follow-up of 39.3 months. The overall rate of return to play was 85.1%, with 68.3% returning to the same level of play. The average time to return to play was 7.0 months postoperatively. The rate of recurrent instability events following reconstruction was 5.4%. There was an improvement in both mean visual analog scale, pain scores (preoperative: 4.3, postoperative: 1.6) and Tegner activity scores (preoperative: 4.8, postoperative: 5.5). CONCLUSION The overall rate of return to play was high after MPFL reconstruction for the treatment of recurrent patellar instability. However, a relatively high percentage of those patients were unable to return to their preoperative level of sport. Additionally, there was a moderate time taken to return to play, at approximately 7 months after the procedure.
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Affiliation(s)
- Amit K Manjunath
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, USA
| | - Eoghan T Hurley
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, USA
| | - Laith M Jazrawi
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, USA
| | - Eric J Strauss
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, USA
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Hiemstra LA, Kerslake S, Lafave MR, Tucker A. Patella alta is reduced following MPFL reconstruction but has no effect on quality-of-life outcomes in patients with patellofemoral instability. Knee Surg Sports Traumatol Arthrosc 2021; 29:546-552. [PMID: 32274546 DOI: 10.1007/s00167-020-05977-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 03/30/2020] [Indexed: 01/17/2023]
Abstract
PURPOSE The primary purpose of this study was to determine if isolated medial patellofemoral ligament (MPFL) reconstruction for lateral patellofemoral instability altered the patellar height ratio. Secondary purposes were to use disease-specific quality-of-life scores to determine if MPFL reconstruction is as successful in patients with patella alta, compared to those without; and whether the change in the patellar height ratio after MPFL reconstruction is influenced by demographic and clinical factors. METHODS Demographic and clinical data were collected pre-operatively on 283 patients with recurrent patellofemoral instability. Pre-operative and 6-month post-operative true-lateral radiographs were assessed to determine the patellar height ratio using the Caton-Deschamps index. A Caton-Deschamps index ≥ 1.2 was defined as patella alta. Paired t tests evaluated the effect of MPFL reconstruction on the Caton-Deschamps index. Using a two-sample t test, pre- and 24-month post-operative Banff Patellofemoral Instability Instrument (BPII) scores were assessed for differences in clinical outcomes between patients with and without patella alta. Pearson (for continuous variables) and Spearman rank correlations (for binary/ordinal variables) were calculated to determine the relationship between the patellar height ratio, demographic and pathoanatomic risk factors, and pre- and post-operative BPII scores. RESULTS Pre- and post-operative true-lateral radiographs were admissible for 229/283 patients (81%) following isolated MPFL reconstruction. A statistically significant difference in the Caton-Deschamps index was evident from pre- to post-operative for the entire cohort (p < 0.001). The mean decrease in ratio was 0.03, and the effect size was 0.27, classified as small. Pre-operatively 52/229 patients (22.7%) demonstrated a Caton-Deschamps index ≥ 1.2, mean = 1.27 (SD = 0.08); post-operatively 21/229 patients (9.2%) demonstrated patella alta, mean = 1.18, (SD = 0.10), p < 0.001 (two-tailed). The mean decrease in the Caton-Deschamps index for patients with pre-operative patella alta was 0.10; the effect size was 0.82, classified as large. Pearson r correlation of patella alta to the pre- and post-operative BPII scores demonstrated no statistically significant relationship. CONCLUSION This study has demonstrated that treatment of lateral patellofemoral instability with an isolated MPFL reconstruction results in a statistically significant decrease in patellar height ratio, with the effect size being greatest in patients with higher pre-operative Caton-Deschamps indices. In patients that presented with patella alta, normalization of the patellar height ratio occurred in 31/52 (59.6%) of the cases. Pre-operative patella alta was not associated with a statistically significant difference in disease-specific BPII outcome scores at any time point. Given these findings, the utility and results of tibial tubercle distalization in patients with patella alta should be a focus of further research. Level of evidence IV.
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Affiliation(s)
- Laurie Anne Hiemstra
- Banff Sport Medicine, PO Box 1300, Banff, AB, T1L 1B3, Canada. .,Department of Surgery, University of Calgary, Calgary, Canada.
| | - Sarah Kerslake
- Banff Sport Medicine, PO Box 1300, Banff, AB, T1L 1B3, Canada
| | - Mark R Lafave
- Department of Health and Physical Education, Mount Royal University, Calgary, Canada
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Migliorini F, Maffulli N, Eschweiler J, Quack V, Tingart M, Driessen A. Lateral retinacular release combined with MPFL reconstruction for patellofemoral instability: a systematic review. Arch Orthop Trauma Surg 2021; 141:283-292. [PMID: 33315122 PMCID: PMC7886734 DOI: 10.1007/s00402-020-03689-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Accepted: 11/11/2020] [Indexed: 01/03/2023]
Abstract
INTRODUCTION The role of the lateral retinaculum in patellofemoral instability is still debated. Lateral retinacular release (LRR), has been extensively performed in combination with different surgical procedures, including reconstruction of medio-patellofemoral ligament (MPFL). Despite controversial indications, the results from these studies seem promising. The present study conducts a systematic review about current biomechanical and clinical evidence concerning the role of LRR in combination with MPFL reconstruction. We performed a comprehensive literature research, comparing the outcomes of MPFL reconstruction with and without LRR. MATERIALS AND METHODS This systematic review was conducted according to the PRISMA guidelines. The literature search was performed in August 2020. All articles describing the outcome of isolated MPFL reconstruction alone or in combination with a LRR in patients with recurrent patellofemoral instability were considered for inclusion. Only articles reporting data on patients with a minimum of 12-month follow-up were included. Only articles reporting quantitative data under the outcomes of interest were included. RESULTS A total of 63 articles were eligible for this systematic review, including 2131 knees. The mean follow-up was 40.87 ± 24.1 months. All scores of interests improved in favour of the combined group: Kujala + 3.8% (P = 0.01), Lysholm + 4.2% (P = 0.004), Tegner + 0.8 points (P = 0.04), IKDC + 9.8% (P = 0.02). The ROM was comparable between the two groups (P = 0.4). Similarity was found in terms of positivity to the apprehension test (P = 0.05), rate of complications (P = 0.1), re-dislocations (P = 0.8), and revision surgeries (P = 0.1). CONCLUSION There is no evidence that adding a lateral release impacts positively on the outcome of MPFL reconstruction. LEVEL OF EVIDENCE IV, Systematic review.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedics, University Clinic Aachen, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Nicola Maffulli
- Department of Medicine, Surgery and Dentistry, University of Salerno, Via S. Allende, 84081 Baronissi, SA Italy ,School of Pharmacy and Bioengineering, Keele University School of Medicine, Thornburrow Drive, Stoke on Trent, England ,Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Queen Mary University of London, Mile End Hospital, 275 Bancroft Road, London, E1 4DG England
| | - Jörg Eschweiler
- Department of Orthopaedics, University Clinic Aachen, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Valentin Quack
- Department of Orthopaedics, University Clinic Aachen, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Markus Tingart
- Department of Orthopaedics, University Clinic Aachen, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Arne Driessen
- Department of Orthopaedics, University Clinic Aachen, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074 Aachen, Germany
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