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Ryan PC, Ching IC, Ierulli VK, Pickett K, Mulcahey MK. Fear of Re-Injury, 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 PRISMA 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 18 of 632 identified studies met inclusion criteria. 1,072 patients that underwent MFPLR were recorded. Return to sport rates and mean/median time ranged from 60.0-100% and 3-10.4 months, respectively. 55.6-84.0% of patients returned to sport without decreasing level of competition. Six of 12 studies (50.0%) reported fear of re-injury 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%). CONCLUSION Athletes that underwent MPFLR following recurrent patellar instability returned to sport at a range of 60.0-100%. Return to sport at the same level or higher was found to have a lower maximum rate at 55.6-84.0%. Fear of re-injury 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 IV, systematic review of level III and IV studies.
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Affiliation(s)
| | | | - Victoria K Ierulli
- Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, LA
| | - Keith Pickett
- Rudolph Matas Library of the Health Sciences, Tulane University School of Medicine, New Orleans, LA
| | - Mary K Mulcahey
- Department of Orthopedic Surgery and Rehabilitation, Loyola University Medical Center.
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Bhimani R, Ashkani-Esfahani S, Mirochnik K, Lubberts B, Waryasz G, Tanaka MJ. Radiographic Landmark Measurements for the Femoral Footprint of the Medial Patellofemoral Complex May Be Affected by Visible Femoral Shaft Length on Lateral Knee Radiographs. Arthroscopy 2024; 40:1858-1866. [PMID: 38056724 DOI: 10.1016/j.arthro.2023.11.025] [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: 03/17/2023] [Revised: 10/29/2023] [Accepted: 11/19/2023] [Indexed: 12/08/2023]
Abstract
PURPOSE To assess the effect of visible femoral shaft length on the accuracy of radiographic landmarks of the medial patellofemoral complex (MPFC). METHODS In 9 cadaveric knees, the MPFC footprint was exposed on the medial femur, and its proximal and distal boundaries were marked. Lateral fluoroscopic images of the knee were assessed in 1-cm length increments, beginning 1 cm proximal to the medial condyle and continuing proximally to 8 cm. The MPFC midpoint was described on each image relative to the posterior cortical line of the femur and a line perpendicular to this line through the proximal margin of the medial condyle. In addition, the MPFC midpoint was assessed relative to a line from the proximal posterior cortex to the midpoint of Blumensaat line. RESULTS Using the posterior cortical line as a reference, the MPFC radiographic landmark moved anteriorly with decreasing visible femoral shaft on radiographs, particularly at 4 cm and less. However, no proximal-distal change was noted. Linear regression analysis demonstrated a relationship between visible femoral shaft and MPFC position on radiographs (R = 0.461, R2 = 0.212, B = -0.636, P < .001). For every centimeter decrease in the visible femoral shaft, the radiographic MPFC footprint moved anteriorly by 0.636 mm. Receiver operating characteristic curve analysis revealed that a minimum of 4 cm of femoral shaft on lateral radiographs is required for accurate MPFC footprint localization (area under the curve = 0.80; sensitivity = 76.7%; specificity = 69.0%; P < .001). In contrast, no anterior-posterior change was seen when referencing a line from the proximal posterior cortex to the midpoint of Blumensaat line. CONCLUSIONS When using the posterior cortical line to identify the midpoint of the MPFC, at least 4 cm of femoral shaft should be visible for accurate assessment. If less than 4 cm of shaft is visible, a line through the midpoint of Blumensaat line and the proximal posterior cortex can be used as an alternative method to estimate the position of the femoral footprint. CLINICAL RELEVANCE As fluoroscopy is frequently used intraoperatively for MPFC reconstruction, our findings may serve as a guide when assessing femoral tunnel placement on fluoroscopy.
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Affiliation(s)
- Rohan Bhimani
- Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Soheil Ashkani-Esfahani
- Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Karina Mirochnik
- Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Bart Lubberts
- Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Gregory Waryasz
- Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Miho J Tanaka
- Foot & Ankle Research and Innovation Laboratory, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A..
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Klueh MP, Swany LM, Troost JP, Crawford EA. Return to Sports Rates in Pediatric Patients After Bilateral Versus Unilateral Medial Patellofemoral Ligament Reconstruction. Am J Sports Med 2024; 52:1527-1534. [PMID: 38600806 DOI: 10.1177/03635465241240154] [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] [Indexed: 04/12/2024]
Abstract
BACKGROUND Patellofemoral instability commonly occurs during sports activities. The return to sports (RTS) rate for pediatric patients after bilateral medial patellofemoral ligament reconstruction (MPFLR) is unknown. PURPOSE/HYPOTHESIS The purpose of this study was to evaluate RTS outcomes for pediatric patients undergoing bilateral MPFLR. It was hypothesized that (1) fewer pediatric patients would RTS after bilateral MPFLR compared with unilateral MPFLR and that (2) for those in the bilateral cohort who were able to RTS, fewer patients would attain the same level of play as or higher level than the preinjury level. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS We prospectively collected RTS data on retrospectively identified matched cohorts of patients aged ≤18 years who underwent unilateral and bilateral MPFLR. We matched each participant with bilateral MPFLR at a 1 to 2 ratio with a participant with unilateral MPFLR by concomitant procedure, age, and sex. Postoperative complications and preoperative imaging measurements were collected from medical records. Patient-reported outcomes were obtained using a current Single Assessment Numeric Evaluation score collected at the time of primary outcome data. RESULTS We matched 16 participants (mean age, 14 years) who underwent bilateral MPFLR to 32 participants (mean age, 14.3 years) in a corresponding unilateral MPFLR cohort. We found a significant decrease in RTS rates for pediatric patients after bilateral MPFLR when compared with unilateral MPFLR (69% vs 94%; P = .03). Among those who returned to sports, there was no difference in the level of play achieved. For participants who did not RTS or returned at a lower level of play after bilateral MPFLR, 57% cited fear of reinjury as the primary reason. There were no differences in postoperative complications or current Single Assessment Numeric Evaluation scores between cohorts. The bilateral cohort had a significantly higher Caton-Deschamps index compared with the unilateral cohort, although the absolute difference was small (1.3 vs 1.2; P = .005). CONCLUSION We found that pediatric patients have a lower RTS rate after bilateral MPFLR when compared with a matched unilateral MPFLR cohort. No differences in the level of play were achieved among those who returned to sports. Fear of reinjury was a commonly cited reason for not returning to sports.
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Affiliation(s)
- Michael P Klueh
- Department of Orthopaedic Surgery, University of Michigan, Michigan Medicine, Ann Arbor, Michigan, USA
| | - Lauren M Swany
- Department of Orthopaedic Surgery, University of Michigan, Michigan Medicine, Ann Arbor, Michigan, USA
| | - Jonathan P Troost
- Michigan Institute for Clinical & Health Research, University of Michigan, Ann Arbor, Michigan, USA
| | - Eileen A Crawford
- Department of Orthopaedic Surgery, University of Michigan, Michigan Medicine, Ann Arbor, Michigan, USA
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Keoliya A, Ramteke SU. A Case Report on Medial Patellofemoral Ligament Reconstruction Rehabilitation in a Cricket Player Through Targeted Agility Training. Cureus 2024; 16:e56002. [PMID: 38606268 PMCID: PMC11007486 DOI: 10.7759/cureus.56002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 03/11/2024] [Indexed: 04/13/2024] Open
Abstract
The medial patellofemoral ligament (MPFL) serves as a crucial stabilizer, preventing lateral dislocation of the patella. Surgery is usually advised after a second dislocation, with MPFL reconstruction being a common procedure. The primary objective of rehabilitation post-surgery is not just to relieve pain and restore range of motion (ROM), but also to combine proprioceptive neuromuscular training to help patients return to their prior functional level. Agility training is a crucial component in accomplishing this goal. The current case is of a 19-year-old male cricket player with a history of recurrent patellar dislocation who underwent surgery after the latest incident rendered him unable to bear weight. His rehabilitation program included standard protocols alongside the early implementation of agility drills, such as ladder exercises. Compared to traditional approaches, this case demonstrates significant improvement in the patient's functional ability following surgery. This report highlights the importance of comprehensive rehabilitation for patients undergoing MPFL reconstruction. It not only underscores the rationale behind the surgery but also lays the groundwork for comparing recovery times. Notably, this program incorporated early agility exercises from the very beginning, suggesting that such an approach might accelerate recovery compared to standard protocols. Further investigation is warranted to explore the potential benefits of early agility training in this patient population.
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Affiliation(s)
- Ashish Keoliya
- Sports Physiotherapy, Ravi Nair Physiotherapy College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Swapnil U Ramteke
- Sports Physiotherapy, Ravi Nair Physiotherapy College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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Jones TJ, Koh JL, Elias JJ. Influence of medial patellofemoral ligament reconstruction on patellar tracking and patellofemoral contact pressures in patella alta. Comput Methods Biomech Biomed Engin 2024; 27:36-44. [PMID: 36645842 DOI: 10.1080/10255842.2023.2168122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 01/08/2023] [Indexed: 01/18/2023]
Abstract
Knee squatting was simulated to characterize the influence of medial patellofemoral ligament (MPFL) reconstruction on patellar tracking and contact pressures for knees with mild patella alta (Caton-Deschamps index = 1.3-1.4). Eight computational models represented knees in the pre-operative condition and following MPFL reconstruction. MPFL reconstruction significantly reduced patellar lateral tracking at low flexion angles based on bisect offset index, significantly decreased the maximum lateral pressure in mid-flexion, and significantly increased the maximum medial pressure in mid-flexion. MPFL reconstruction improves patellar stability for knees with mild patella alta and can reduce the pressure applied to lateral cartilage on the patella.
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Affiliation(s)
- Travis J Jones
- Department of Orthopedic Surgery, Cleveland Clinic Akron General, Akron, OH, USA
| | - Jason L Koh
- Department of Orthopedic Surgery, NorthShore University Health System, Evanston, IL, USA
| | - John J Elias
- Department of Health Sciences, Cleveland Clinic Akron General, Akron, OH, USA
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Castagno C, Kneedler S, Fares A, Maier M, Gontre G, Weiss WM. Isolated medial patellofemoral reconstruction outcomes: A systematic review and meta-analysis. Knee 2023; 44:59-71. [PMID: 37531844 DOI: 10.1016/j.knee.2023.07.003] [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: 02/20/2023] [Revised: 06/03/2023] [Accepted: 07/16/2023] [Indexed: 08/04/2023]
Abstract
BACKGROUND Treatment of patellar instability remains up for debate, and a combination of tibial tubercle osteotomy and medial patellofemoral ligament reconstruction (MPFLr) of the medial patellofemoral ligament (MPFL) has become the mainstay treatment for recurrent lateral patellar dislocation. Due to limited small studies, there remains a variety of surgical techniques still being practiced. The use of MPFL reconstruction, in isolation, has demonstrated promise. PURPOSE The purpose of this systematic review and meta-analysis is to investigate if isolated medial patellofemoral ligament reconstruction (iMPFLr) can safely and efficaciously restore knee stability and to present the patient demographics, surgical techniques, graft choices, clinical outcomes, and complications after iMPFLr for recurrent patellar dislocation (RPD). METHODS A review of the current literature according to Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines, yielded 299 abstracts. Twenty-seven articles met the inclusion/exclusion criteria accounting for 1200 patients. Data was pooled and analyzed focusing on patient demographics, graft type used, Kujala, International Knee Documentation Committee (IKDC), Lysholm, Tegner, and complications. RESULTS Across all studies the weighted mean age was found to be an average of 24.5 years, BMI was 24.9 kg/m2, follow-up was 47.3 months, as 67% were female, TT-TG distance was 15.3 mm, and Caton Deschamps index 1.11. The pooled effect size difference of pre versus post assessment of Kujala was -2.8, IKDC was -4.5, Lysholm was -6.4, and Tegner was -0.74. The pooled complication rate was found to be 8% across all included studies. A subgroup analysis was also performed, specifically looking at how single bundle, double bundle, gracilis, semitendinosus and knee angle during fixation effect outcome data. CONCLUSION This systematic review and meta-analysis demonstrates that isolated MPFL reconstruction is a safe and effective treatment for recurrent patellar dislocations. Given the efficacy of isolated MPFL reconstruction, future investigations should aim to uncover the exact TT-TG distance, trochlear dysplasia, and patella alta grade for selecting patients to undergo this procedure. Furthermore, more primary research needs to be conducted on this topic due to the overall lack of published data from randomized controlled studies and no broad standardization of outcome measurements. LEVEL OF EVIDENCE (4) Systematic Review and Meta-Analysis.
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Affiliation(s)
- Christopher Castagno
- Texas Tech University Health Science Center, Paul Foster School of Medicine, El Paso, TX, USA.
| | - Sterling Kneedler
- Department of Orthopedic Surgery & Rehabilitation, The University of Texas Medical Branch, Galveston, TX, USA
| | - Austin Fares
- Orthopedic Surgery and Sports Medicine, William Beaumont Army Medical Center, Fort Bliss, TX, USA
| | - Michael Maier
- Orthopedics and Sports Medicine, Baylor College of Medicine and St. Luke's Medical, Sugar Land, TX, USA
| | - Gil Gontre
- Texas Tech University Health Science Center, Paul Foster School of Medicine, El Paso, TX, USA; Texas Tech University Health Science Center, Department of Orthopedics & Rehabilitation, El Paso, TX, USA
| | - William M Weiss
- Orthopedic Sports Medicine, Arthroscopy, & Extremity Reconstruction; Department of Orthopedic Surgery & Rehabilitation, The University of Texas Medical Branch, Galveston, TX, USA
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Li ZI, Triana J, Lott A, Rao N, Jazrawi T, Montgomery SR, Buldo-Licciardi M, Alaia MJ, Strauss EJ, Jazrawi LM, Campbell KA. Patients who undergo bilateral medial patellofemoral ligament reconstruction return to sport at a similar rate as those that undergo unilateral reconstruction. Knee Surg Sports Traumatol Arthrosc 2023; 31:4195-4203. [PMID: 37219546 DOI: 10.1007/s00167-023-07462-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 05/16/2023] [Indexed: 05/24/2023]
Abstract
PURPOSE Lateral patellar instability is a debilitating condition not only to athletes, but also to a wide range of highly active individuals. Many of these patients experience symptoms bilaterally, though it is unknown how these patients fair with return to sports following a second medial patellofemoral ligament reconstruction (MPFLR). The purpose of this study is to evaluate the rate of return to sport following bilateral MPFLR compared to a unilateral comparison group. METHODS Patients who underwent primary MPFLR with minimum 2-year follow-up were identified from 2014 to 2020 at an academic center. Those who underwent primary MPFLR of bilateral knees were identified. Pre-injury sport participation and Tegner score, Kujala score, Visual Analog Score (VAS) for pain, satisfaction, and MPFL-Return to Sport after Injury (MPFL-RSI) scale were collected. Bilateral and unilateral MPFLRs were matched in a 1:2 ratio based on age, sex, body mass index, and concomitant tibial tubercle osteotomy (TTO). A sub-analysis was performed regarding concomitant TTO. RESULTS The final cohort consisted of 63 patients, including 21 patients who underwent bilateral MPFLR, matched to 42 unilateral patients at mean follow-up of 47 ± 27 months. Patients who underwent bilateral MPFLR returned to sport at a rate of 62% at a mean of 6.0 ± 2.3 months, compared to a unilateral rate of 72% at 8.1 ± 4.2 months (n.s.). The rate of return to pre-injury level was 43% among bilateral patients and 38% in the unilateral cohort. There were no significant differences in VAS pain, Kujala, current Tegner, satisfaction, and MPFL-RSI scores between cohorts. Approximately half of those (47%) who failed to return to sport cited psychological factors and had significantly lower MPFL-RSI scores (36.6 vs 74.2, p = 0.001). CONCLUSION Patients who underwent bilateral MPFLR returned to sports at a similar rate and level compared to a unilateral comparison group. MPFL-RSI was found to be significantly associated with return to sport. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Zachary I Li
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA.
| | - Jairo Triana
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
| | - Ariana Lott
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
| | - Naina Rao
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
| | - Taylor Jazrawi
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
| | - Samuel R Montgomery
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
| | - Michael Buldo-Licciardi
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
| | - Michael J Alaia
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
| | - Eric J Strauss
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
| | - Laith M Jazrawi
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
| | - Kirk A Campbell
- Department of Orthopedic Surgery, New York University Langone Health, 333 East 38th St, New York, NY, 10016, USA
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Leite CBG, Hinckel BB, Ribeiro GF, Giglio PN, Santos TP, Bonadio MB, Arendt E, Gobbi RG. Medial patellofemoral ligament reconstruction in skeletally immature patients without correction of bony risk factors leads to acceptable outcomes but higher failure rates. J ISAKOS 2023; 8:189-196. [PMID: 36924824 DOI: 10.1016/j.jisako.2023.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 01/29/2023] [Accepted: 02/25/2023] [Indexed: 03/15/2023]
Abstract
OBJECTIVES To report outcomes and re-dislocation rates of medial patellar stabilizers reconstruction without bone procedures for correction of anatomical risk factors for patellar instability in skeletally immature patients; to compare isolated medial patellofemoral ligament (MPFL) reconstruction to combined MPFL and medial patellotibial ligament (MPTL) reconstruction in this population. METHODS Patients with open physis and bone abnormalities including patella alta and/or increased tibial tubercle-trochlear groove (TT-TG) distance and/or trochlear dysplasia underwent MPFL reconstruction, either isolated or associated with MPTL reconstruction. Preoperative, 1-year follow-up and the latest follow-up (5 years minimum) data were collected. Radiological and clinical evaluations were conducted, with special attention to failure rate. Comparison of results from isolated MPFL and combined MPFL/MPTL reconstructions was performed. RESULTS Twenty-nine patients were included, 19 in the isolated MPFL group (median 14 years old; follow-up 5.8 ± 1.7 years) and 10 in the combined MPFL/MPTL group (median 13.5 years old; follow-up 5.2 ± 1.4 years). Kujala and Tegner scores increased over time, although without statistically significant differences between the two groups at the latest follow-up (p = 0.840 and p > 0.999, respectively). During follow-up, 5 of 19 (26.3%) isolated MPFL and 2 of 10 (20%) MPFL/MPTL reconstructions experienced recurrence of patellar dislocation (p > 0.999). Trochlear dysplasia type D (p = 0.028), knee rotation (p = 0.009) and lateral patellar tilt angle (p = 0.003) were associated with patellar instability recurrence. The isolated MPFL group showed increased laxity on physical exam at the latest follow-up compared to the 1-year follow-up (patellar glide test (p = 0.002), patellar tilt test (p = 0.042) and subluxation in extension (p = 0.019). This increased laxity was not observed in the MPFL/MPTL group (p > 0.999). Comparing both groups, the glide test was significantly better in the combined MPFL/MPTL group in comparison to the isolated MPFL reconstruction group at the latest follow-up (p = 0.021). CONCLUSION MPFL reconstruction in isolation or combined with MPTL reconstruction in skeletally immature patients with additional uncorrected anatomical patellofemoral abnormalities leads to acceptable clinical outcomes within a minimum of 5 years follow-up, although has a high failure rate of 24.1%. Addition of a MPTL reconstruction to the MPFL may result in decreased patellar laxity on physical exams, as demonstrated by better patellar glide test, patellar tilt test and subluxation in extension. LEVEL OF EVIDENCE Level III; retrospective cohort study.
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Affiliation(s)
- Chilan Bou Ghosson Leite
- Instituto de Ortopedia e Traumatologia, Hospital Das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP 05403-010, Brazil; Department of Orthopedic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Betina Bremer Hinckel
- Department of Orthopaedic Surgery, William Beaumont Hospital, Royal Oak, MI 48180, USA.
| | - Gabriel Fernandes Ribeiro
- Instituto de Ortopedia e Traumatologia, Hospital Das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP 05403-010, Brazil
| | - Pedro Nogueira Giglio
- Instituto de Ortopedia e Traumatologia, Hospital Das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP 05403-010, Brazil
| | - Tarsis Padula Santos
- Instituto de Ortopedia e Traumatologia, Hospital Das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP 05403-010, Brazil
| | - Marcelo Batista Bonadio
- Instituto de Ortopedia e Traumatologia, Hospital Das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP 05403-010, Brazil
| | - Elizabeth Arendt
- Department of Orthopedic Surgery, University of Minnesota, Minneapolis, MN 55454, USA
| | - Riccardo Gomes Gobbi
- Instituto de Ortopedia e Traumatologia, Hospital Das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP 05403-010, Brazil
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Migliorini F, Maffulli N, Bell A, Betsch M. Outcomes, Return to Sport, and Failures of MPFL Reconstruction Using Autografts in Children and Adolescents with Recurrent Patellofemoral Instability: A Systematic Review. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9121892. [PMID: 36553335 PMCID: PMC9777394 DOI: 10.3390/children9121892] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 11/28/2022] [Accepted: 11/30/2022] [Indexed: 12/04/2022]
Abstract
INTRODUCTION This study systematically reviews and updates the current evidence on the outcomes of medial patellofemoral ligament (MPFL) reconstruction using autografts in children and adolescents with recurrent patellofemoral instability. The outcomes of interest were improvements in patient reported outcomes measures (PROMs), return to sport rates, and the rates of surgical failure. METHODS This systematic review was performed according to the 2020 PRISMA guidelines. The following electronic databases were accessed in October 2022: PubMed, Scopus, Web of Science. All the clinical studies which investigated the outcomes of MPFL reconstruction using autografts in children and adolescents with recurrent patellofemoral instability were accessed. Only studies which included patients younger than 18 years were considered. Techniques, case reports, guidelines, comments, editorials, letters, protocols, reviews, and meta-analyses were excluded. Studies which included patients with congenital or acute patellofemoral instability were not eligible, nor were those which focused exclusively on hyperlaxity. RESULTS Data from 477 patients (510 procedures) were retrieved. Of the patients, 41% (196 of 477) were women. The mean length of follow-up was 33.7 ± 28.8 months. The mean age of the patients was 14.6 ± 1.6 years. At the last follow-up, all PROMs of interest were statistically improved. The mean time to return to sport was 6.1 ± 1.1 months. Of the patients, 27% reduced their level of activity after surgical stabilization. A total of 87% of patients returned to practice sport. A total of 5% (26 of 477) and 2% (9 of 363) of patients experienced further dislocations and subluxations, respectively, during the follow-up period. Moreover, 4% (16 of 403) of patients underwent a further surgical procedure for patellofemoral instability within the follow-up period. CONCLUSION MPFL reconstruction using autografts is effective in children and adolescents with recurrent patellofemoral instability.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Hospital, 52074 Aachen, Germany
- Department of Orthopaedic and Trauma Surgery, Eifelklinik St. Brigida, 52152 Simmerath, Germany
- Correspondence: ; Tel.: +49-0241-80-35529
| | - Nicola Maffulli
- Department of Medicine, Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy
- School of Pharmacy and Bioengineering, Faculty 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
| | - Andreas Bell
- Department of Orthopaedic and Trauma Surgery, Eifelklinik St. Brigida, 52152 Simmerath, Germany
| | - Marcel Betsch
- Department of Orthopaedic and Trauma Surgery, University Hospital of Erlangen, 91054 Erlangen, Germany
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Perry AK, Maheshwer B, DeFroda SF, Hevesi M, Gursoy S, Chahla J, Yanke A. Patellar Instability. JBJS Rev 2022; 10:01874474-202211000-00008. [PMID: 36441831 DOI: 10.2106/jbjs.rvw.22.00054] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
➢ Certain anatomic factors, such as patella alta, increased tibial tubercle-trochlear groove distance, rotational deformity, and trochlear dysplasia, are associated with an increased risk of recurrent patellar instability. ➢ The presence of a preoperative J-sign is predictive of recurrent instability after operative management. ➢ Isolated medial patellofemoral ligament reconstruction may be considered on an individualized basis, considering whether the patient has anatomic abnormalities such as valgus malalignment, trochlear dysplasia, or patella alta in addition to the patient activity level. ➢ More complex operative management (bony or cartilaginous procedures) should be considered in patients with recurrent instability, malalignment, and certain anatomic factors.
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Affiliation(s)
- Allison K Perry
- Division of Sports Medicine, Midwest Orthopaedics at Rush University, Chicago, Illinois
| | | | - Steven F DeFroda
- Division of Sports Medicine, Midwest Orthopaedics at Rush University, Chicago, Illinois
| | - Mario Hevesi
- Division of Sports Medicine, Midwest Orthopaedics at Rush University, Chicago, Illinois
| | - Safa Gursoy
- Division of Sports Medicine, Midwest Orthopaedics at Rush University, Chicago, Illinois
| | - Jorge Chahla
- Division of Sports Medicine, Midwest Orthopaedics at Rush University, Chicago, Illinois
| | - Adam Yanke
- Division of Sports Medicine, Midwest Orthopaedics at Rush University, Chicago, Illinois
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11
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Saylik M, Bilgin Y, Atıcı T. Comparison of Clinical and Radiological Results of Lateral Retinacular Release or Lateral Retinacular Lengthening Methods Combined With Medial Retinaculum Plication in Patellofemoral Instability. Cureus 2022; 14:e29684. [PMID: 36321008 PMCID: PMC9615342 DOI: 10.7759/cureus.29684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/28/2022] [Indexed: 11/25/2022] Open
Abstract
Introduction In this study, we aimed to compare the clinical and radiological results of patients who underwent medial retinaculum plication (MRP) combined with lateral retinacular release (LRR) or lateral retinacular lengthening (LRL) with the diagnosis of patellofemoral (PF) instability. Methods In our study, we retrospectively analyzed 75 knees of 75 adult patients (43 females and 32 males) who underwent MRP+LRR or MRP+LRL due to PF instability without osseous pathologies. Patients were divided into two groups (MRP+LRR and MRP+LRL) according to the surgical method. The clinical and radiological results of the two groups were compared. Results MRP+LRL surgery was performed on 45 knees and MRP+LRR surgery on 30 knees. The mean age was 26.5 (18-43) years. There was no significant difference between the two groups in the change in patellar lateral shift (PLS) (p=0.429) and congruence angle (CA) (p=0.218) values. However, there was a significant difference between the two groups in the change in patellar tilt angle (PTA) (p=0.009) and lateral patellofemoral angle (LPFA) (p<0.001) values. The change in PTA and LPFA values was higher in the MRP+LRL group. There was no significant difference between the two groups in terms of pre-operative and post-operative Lysholm knee scoring scale (p=0.205, p=0.228), Kujala pain scale (p=0.393, p=0.596), and Tegner activity level scale values (p=0.121, p=0.899). Conclusions MRP+LRR or MRP+LRL provided successful results for correcting the instability in PF instability without osseous pathologies such as patella alta, tibial tubercle-trochlear groove (TT-TG) dysplasia, trochlea dysplasia, genu valgus, and tibial-femoral torsion. While PTA and LPFA values improved more with the MRP-LRL method, clinical results were similar in both methods.
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Bhimani R, Ashkani-Esfahani S, Mirochnik K, Lubberts B, DiGiovanni CW, Tanaka MJ. Radiographic Landmarks for the Femoral Attachment of the Medial Patellofemoral Complex: A Cadaveric Study. Arthroscopy 2022; 38:2504-2510. [PMID: 35157967 DOI: 10.1016/j.arthro.2022.01.046] [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] [Received: 10/04/2021] [Revised: 01/27/2022] [Accepted: 01/30/2022] [Indexed: 02/02/2023]
Abstract
PURPOSE To report the radiographic landmarks for the medial patellofemoral complex (MPFC) footprint on the medial femur and describe the difference between the radiographic positions corresponding to the medial quadriceps tendon femoral ligament (MQTFL) and medial patellofemoral ligament (MPFL) fibers. METHODS In 8 unpaired cadaveric knees, the MPFC footprint was exposed on the medial femur, and the proximal and distal boundaries of the footprint were marked. Lateral fluoroscopic images of the knee were obtained and analyzed using Image J. The proximal boundary corresponding to the MQTFL, the MPFC midpoint, and distal boundary corresponding to the MPFL were described radiographically and compared for differences in position. RESULTS The proximal MQTFL footprint was 0.8 ± 0.6 mm anterior (P = .013) and 5.2 ± 1.8 mm proximal to the MPFC midpoint (P <.001), whereas the distal MPFL footprint was 0.8 ± 0.7 mm posterior (P = .012) and 5.9 ± 1.1 mm distal to the radiographic MPFC midpoint (P <.001). The radiographic point corresponding to the distal MPFL footprint was 0.8 ± 0.9 mm posterior (P = .011) and 11.1 ± 2.3 mm distal to the radiographic point of the proximal MQTFL footprint (P <.001). When using the point of intersection of the posterior cortical line and the proximal posterior condyle as a reference, 91.6% of all points correlating to the MQTFL, MPFC midpoint and MPFL, were within 10 mm in any direction from this radiographic landmark. CONCLUSIONS On fluoroscopic imaging, the proximal MQTFL and distal MPFL fibers had significantly different radiographic positions from the MPFC midpoint on the femur. These findings should be considered when reconstructing specific components of the MPFC. CLINICAL RELEVANCE As fluoroscopy is often used intraoperatively to guide graft placement, our findings may serve as a reference when differentiating the locations of the MPFL vs MQTFL on the femur for anatomic reconstruction.
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Affiliation(s)
- Rohan Bhimani
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Soheil Ashkani-Esfahani
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Karina Mirochnik
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Bart Lubberts
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, U.S.A
| | - Christopher W DiGiovanni
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, 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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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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15
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Rizkalla JM, Holderread B, Botros D, Orozco E, Botros A, Botros A, Wilson P, Ellis H. Patient perception of medial patellofemoral ligament reconstruction on Instagram. Proc AMIA Symp 2022; 35:447-450. [DOI: 10.1080/08998280.2022.2054302] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- James M. Rizkalla
- Department of Orthopedic Surgery, Baylor University Medical Center, Dallas, Texas
- Coptic Medical Association of North America Research Institute, Manlius, New York
| | - Brendan Holderread
- Department of Orthopedic Surgery, Baylor University Medical Center, Dallas, Texas
- Department of Orthopedic Surgery, Methodist Hospital, Houston, Texas
| | - David Botros
- Coptic Medical Association of North America Research Institute, Manlius, New York
- Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Erin Orozco
- University of Texas Health Sciences Center, Houston, Texas
| | - Andro Botros
- Coptic Medical Association of North America Research Institute, Manlius, New York
- Department of Orthopedic Surgery, Indiana University-Purdue University of Indianapolis, Indianapolis, Indiana
| | - Anthony Botros
- Coptic Medical Association of North America Research Institute, Manlius, New York
- Department of Orthopedic Surgery, Indiana University-Purdue University of Indianapolis, Indianapolis, Indiana
| | - Philip Wilson
- Department of Orthopedic Surgery, Scottish Rite Hospital for Children, Dallas, Texas
| | - Henry Ellis
- Department of Orthopedic Surgery, Scottish Rite Hospital for Children, Dallas, Texas
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16
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Bangert Y, Mittelstrass F, Weisshorn J, Hagmann S, Barié A, Jaber A. The Ali Krogius procedure for treatment of patellofemoral instability should be regarded as obsolete even in skeletally immature patients. BMC Musculoskelet Disord 2022; 23:257. [PMID: 35296292 PMCID: PMC8925174 DOI: 10.1186/s12891-022-05200-4] [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: 10/17/2021] [Accepted: 03/07/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Several interventions are established for treating patellofemoral instability in adults. Fewer exist for pediatric patients without damaging the epiphysis. The Ali Krogius (AK) method is currently still being used. Most studies are not current and report varying results in small patient population. The aim of this study is to determine the long-term results of the AK method. METHODS In this monocentric, retrospective study design, 33 knees in 33 patients who received the AK procedure for recurrent patellar dislocation were assessed. The average age was 20.8 years (range 6-40). The following functional scores were assessed: Kujala Score, Lysholm Score and Tegner Score. Subgroup analysis was done for patients ≤16 years of age. Available preoperative imaging was assessed for known risk factors. RESULTS After an average follow-up of 7.8 years (Range 59-145 months), a total of 8 (24%) knees suffered a redislocation postoperatively. Seven of the eight dislocations occurred in patients ≤ 16 years of age. One knee (3%) was revised due to persistent pain. The median score was 86 points for the Kujala score and 90 for the Lysholm score. The median in the Tegner score was level 6. Clinically, the patellar glide was lateralized in 7 knees (21%) and an apprehension sign was triggered in 8 knees (24%). CONCLUSIONS Including the present study, the existing literature indicates a redislocation rate between 24 and 41% following AK. It should thus be regarded as obsolete even though it protects the epiphysis. Surgical interventions such as medial patellofemoral ligament reconstruction with femoral drilling distal to the epiphysis should be preferred. TRIAL REGISTRATION Retrospectively registered: S-302/2016. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Yannic Bangert
- Department of Orthopedics, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, 69118, Heidelberg, Germany.
| | - Felix Mittelstrass
- Department of Diagnostic and interventional Radiology, Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Johannes Weisshorn
- Department of Orthopedics, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, 69118, Heidelberg, Germany
| | - Sébastien Hagmann
- Department of Orthopedics, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, 69118, Heidelberg, Germany
| | - Alexander Barié
- Center for Joint Surgery and Sport Injuries, Sportopaedie Heidelberg, Clinic St. Elisabeth Heidelberg, Max-Reger-Straße 5-7, 69121, Heidelberg, Germany
| | - Ayham Jaber
- Department of Orthopedics, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Schlierbacher Landstrasse 200a, 69118, Heidelberg, Germany
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17
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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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19
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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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20
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Liu Z, Yi Q, He L, Yao C, Zhang L, Lu F, Zhang X, Wu M, Geng B, Xia Y, Jiang J. Comparing Nonoperative Treatment, MPFL Repair, and MPFL Reconstruction for Patients With Patellar Dislocation: A Systematic Review and Network Meta-analysis. Orthop J Sports Med 2021; 9:23259671211026624. [PMID: 34604425 PMCID: PMC8485172 DOI: 10.1177/23259671211026624] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Accepted: 02/28/2021] [Indexed: 12/03/2022] Open
Abstract
Background: Medial patellofemoral ligament (MPFL) reconstruction, MPFL repair, and
nonoperative treatment are important treatments for patients with patellar
dislocation. However, it is unclear which treatment leads to better
outcomes. Purpose: To determine the efficacy and safety of the 3 treatments in the treatment of
patellar dislocation and compare the effect of MPFL reconstruction with MPFL
repair, MPFL reconstruction with nonoperative treatment, and MPFL repair
with nonoperative treatment. Study Design: Systematic review; Level of evidence, 3. Methods: The PubMed, Web of Science, Cochrane Library, Embase, CNKI (China National
Knowledge Infrastructure), and Wanfang databases were searched from
inception to December 2020. Included were clinical studies that described
the efficacy and safety of 2 of the 3 treatments, studies directly comparing
the clinical effects of the 2 operative techniques, or studies comparing the
effects of reconstruction or repair with nonoperative treatment. Two
reviewers independently extracted data and assessed the quality of the
included studies with the Cochrane risk-of-bias tools. The outcomes
evaluated were postoperative redislocation rate, revision rate,
complications, and Kujala score. We used traditional direct pairwise
meta-analysis as well as network meta-analysis for comprehensive efficacy of
all 3 treatment measures. Results: Twelve studies were included: 5 compared MPFL reconstruction with MPFL
repair, 2 compared MPFL reconstruction with nonoperative treatment, and 5
compared MPFL repair with nonoperative treatment. The risk of bias was
serious in 4, moderate in 4 and low in 4 articles. MPFL reconstruction led
to significantly reduced redislocation and improved Kujala scores compared
with MPFL repair and nonoperative treatment. MPFL repair led to reduced
redislocation rates compared with nonoperative treatment but did not show an
obvious benefit in primary dislocations. There was no significant difference
among the 3 treatments in terms of revision rate and incidence of
complications, although we found that treatment-related complications were
least likely to occur in nonoperative treatment. Conclusion: The results of this review indicate that MPFL reconstruction decreases
recurrent dislocation compared with MPFL repair or nonoperative treatment,
but it has a higher possibility of complications. MPFL repair resulted in
less postoperative redislocation than nonoperative treatment but did not
show an obvious benefit in primary dislocation.
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Affiliation(s)
- Zhongcheng Liu
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Qiong Yi
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Liangzhi He
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Changjiang Yao
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Lanfang Zhang
- Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Fan Lu
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Xiaohui Zhang
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Meng Wu
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Bin Geng
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Yayi Xia
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
| | - Jin Jiang
- Department of Orthopaedics, Gansu Key Laboratory of Orthopaedics, Lanzhou University Second Hospital, Lanzhou, Gansu, PR China
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Femoral interference screw insertion significantly increases graft tension in medial patellofemoral ligament reconstruction. Knee Surg Sports Traumatol Arthrosc 2021; 29:2851-2856. [PMID: 32734332 DOI: 10.1007/s00167-020-06186-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Accepted: 07/24/2020] [Indexed: 12/27/2022]
Abstract
PURPOSE This study aimed to quantify the effect of interference screw insertion on MPFL graft tension when securing the femoral attachment after patellar fixation. It was hypothesized that interference screw insertion significantly increases graft tension. METHODS Ten fresh frozen human cadaveric femurs were utilized to compare graft tension at three different preloading conditions (2 N, 5 N, 10 N) using a tensile testing machine (Admet Inc., Norwood, MA). Each preloading condition was analyzed with varying graft sizes (5-8 mm), tunnel diameters (7-9 mm), and interference screw sizes (7-9 mm). Non-parametric statistical analysis was utilized to compare testing conditions among each other. RESULTS Graft tension significantly increased after interference screw insertion by 100% to 552%, with 2 N preload showing the greatest increase (p < 0.001). Grafts with a larger diameter (7-8 mm) had a significantly greater increase in tension than smaller grafts (5-6 mm), regardless of preloading conditions (p < 0.001). Interference screw size had no influence on graft tension (n.s.). A graft-tunnel interference (tunnel diameter-graft diameter) fit of 0 mm and 1 mm significantly increased graft tension for each preloading condition when compared to a slightly looser fit of ≥ 2 mm (p < 0.05). CONCLUSION Femoral interference screw insertion significantly increases graft tension in MPFL reconstruction even in low preloading conditions, with graft size and graft-tunnel interference fit having a considerably effect on graft tension. Surgeons should be aware of the inadvertent increases in graft tension even in low preloading conditions to mitigate the risk of graft overtensioning.
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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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Moreland CM, Shaw KA, Burks R, Baird M, Hattaway J, Parada SA, Waterman BR. Primary Medial Patellofemoral Ligament Reconstruction in Military Servicemembers: Can We Reliably Restore Preinjury Function and Stability? Orthop J Sports Med 2021; 9:23259671211013334. [PMID: 34179209 PMCID: PMC8202279 DOI: 10.1177/23259671211013334] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 01/12/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Medial patellofemoral ligament (MPFL) reconstruction for patellar instability is a commonly performed procedure with a reported high rate of return to preinjury activity. However, no previous study has assessed the functional outcomes of military servicemembers undergoing MPFL reconstruction. Hypothesis: Primary MPFL reconstruction confers patellar stability, but with limited return to preinjury function and ability to maintain unrestricted military active duty status. Study Design: Case series; Level of evidence, 4. Methods: Using the Management Analysis and Reporting Tool database, we conducted a retrospective review of active duty servicemembers throughout the US Department of Defense Health System who underwent primary MPFL reconstruction between 2012 and 2015. Demographic variables were recorded as well as ability to return to impact activities—defined as running, jumping, rucking with a load >40 pounds (18 kg), and returning to airborne operations—and to remain on active duty status. The rates of recurrent instability and the need for subsequent surgeries were identified and assessed for statistical significance using uni- and multivariate analyses. Patients were evaluated for a minimum of 2 years postoperatively. Results: Of the 213 patients who underwent primary MPFL reconstruction, including 34 with concomitant tibial tubercle osteotomy, 19 (8.9%) patients developed recurrent instability. The presence of bilateral patellar instability was associated with higher recurrence rate. Patients with bilateral instability comprised 47.3% of those with recurrence but only 24.9% of patients without recurrence (P = .019). Impact activity restrictions were present in 57.6% of patients (n = 121), with 86 patients (52.1%) undergoing medical separation from the military. Patients who were prescribed activity restriction before surgery were significantly more likely to have postoperative activity restrictions (64.5%; P = .019), and junior enlisted servicemembers were more likely to be medically separated from service postoperatively than higher ranking senior enlisted members or officers. Conclusion: Only 42.4% of US military servicemembers undergoing primary MPFL reconstruction were able to return to unrestricted impact activity after surgery. Bilateral instability negatively affected return to impact activities. Military servicemembers, particularly junior enlisted members, should be counseled on this poor prognosis for a full return to unrestricted activity postoperatively.
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Affiliation(s)
- Colleen M Moreland
- Department of Orthopaedic Surgery, Dwight David Eisenhower Army Medical Center, Fort Gordon, Georgia, USA
| | - K Aaron Shaw
- Department of Orthopaedic Surgery, Dwight David Eisenhower Army Medical Center, Fort Gordon, Georgia, USA
| | - Robert Burks
- Department of Defense Analysis, Naval Postgraduate School, Monterrey, California, USA
| | - Michael Baird
- Department of Orthopaedic Surgery, Walter Reed Army Medical Center, Washington, District of Colombia, USA
| | - Joshua Hattaway
- Department of Orthopaedic Surgery, Dwight David Eisenhower Army Medical Center, Fort Gordon, Georgia, USA
| | - Stephen A Parada
- Department of Orthopaedic Surgery, Augusta University, Augusta, Georgia, USA
| | - Brian R Waterman
- Department of Orthopaedic Surgery, Wake Forest Baptist Medical Center, Winston-Salem, North Carolina, USA
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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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Dalla-Rosa J, Nogales JJ, Verdejo M, Nogales JI. Medial Patellofemoral Ligament Reconstruction: Use of All-Suture Anchors for Patellar Fixation and a Dynamic Femoral Attachment. Arthrosc Tech 2021; 10:e1345-e1350. [PMID: 34141552 PMCID: PMC8185889 DOI: 10.1016/j.eats.2021.01.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 01/31/2021] [Indexed: 02/03/2023] Open
Abstract
The medial patellofemoral ligament is one of the most relevant structures preventing patellar dislocation. Numerous surgical techniques have been described to reconstruct this structure and patellar biomechanics. Complications after this procedure concern both patella and femur. This technique avoids tunneling the patella and the use of intraoperative radiographs by using the adductor magnus tendon insertion.
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Affiliation(s)
- Jaime Dalla-Rosa
- Complejo Hospitalario Integral Privado, Málaga, Spain
- Address correspondence to Jaime Dalla-Rosa, M.Sc., Avenida de Carlos Haya 121, 29010, Málaga, Spain.
| | | | | | - José I. Nogales
- Complejo Hospitalario Universitario de Badajoz, Badajoz, Spain
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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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Xu J, Zhang B, Jia Y, Wang X, Shen K, Ren W, Sun R. Medial Patellofemoral Ligament Reconstruction Using Suture Tape for Patellofemoral Joint Instability. Orthop Surg 2021; 13:847-854. [PMID: 33749146 PMCID: PMC8126912 DOI: 10.1111/os.12945] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/15/2020] [Accepted: 01/14/2021] [Indexed: 12/25/2022] Open
Abstract
Objective To describe a surgical technique using suture tape for reconstruction of the medial patellofemoral ligament (MPFL). This technique restores the stability of the reconstructed ligament and has excellent postoperative outcomes. Method This is a retrospective analysis. From January 2016 to June 2018, 17 patients underwent MPFL reconstruction using high‐strength suture (FiberTape; Arthrex) augmentation, with at least 12 months of follow up. There were 11 female and 6 male patients. The mean age at the time of MPFL reconstruction was 22.1 years (range 13–34 years). Clinical outcomes included pain level, knee range of motion, passive patellar hypermobility, and maltracking at follow‐up. The lateral patellofemoral angles, congruence angles, and patellar tilt angles were measured in a skyline view by CT at 30° of knee flexion at 12 months. Functional outcomes were assessed using the Lysholm knee scoring scale, the SF‐12 score, the Tegner score, and the Crosby and Insall grading system at yearly follow‐up. Result No patients were lost at the last follow up. One patient had recurrence of patellar dislocation and none of the others had serious complications. The success rate of MPFL repair for preventing recurrent dislocations was 94.1% (16 of 17 knees). Fifteen knees had full range of motion of more than 130°. At follow‐up, 2 knees were judged to have mild hypermobility and none had severe hypermobility or maltracking. Using the Crosby and Insall grading system, 12 knees (70.6%) were graded as excellent, 4 knees (23.5%) as good, 1 knee (5.9%) as fair to poor, and none as worse at the last follow‐up assessment. In all patients, the Lysholm knee score (55.12 ± 13.52 vs 79.88 ± 7.50, P < 0.01), the SF‐12 score (47 ± 9.53 vs 65.24 ± 12.82, P < 0.01), and the Tegner score (2.76 ± 1.39 vs 6.53 ± 1.70, P < 0.01) had improved at their 12‐month follow up. Compared with preoperative radiological findings, there was a significant improvement in lateral patellofemoral angle (−10.24 ± 7.10 vs 6 ± 5.43, P < 0.01), patellar tilt angle (26.53 ± 7.23 vs 9.88 ± 4.24, P < 0.01), and congruence angle (29.59 ± 11.95 vs −8.65 ± 4.86, P < 0.01). Conclusion The use of FiberTape in MPFL reconstruction can improve the stability of the knee following surgery and has good midterm clinical results and low complication rates.
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Affiliation(s)
- Jun‐cai Xu
- Department of Orthopaedic SurgeryThird Hospital of Hebei Medical UniversityShijiazhuangChina
| | - Bo‐xuan Zhang
- Department of Orthopaedic SurgeryThe Eighth People's Hospital of Hebei ProvinceShijiazhuangChina
| | - Yan‐feng Jia
- Department of Orthopaedic SurgeryThird Hospital of Hebei Medical UniversityShijiazhuangChina
| | - Xiao‐feng Wang
- Department of Orthopaedic SurgeryThird Hospital of Hebei Medical UniversityShijiazhuangChina
| | - Ke Shen
- Department of Orthopaedic SurgeryThird Hospital of Hebei Medical UniversityShijiazhuangChina
| | - Wei‐bin Ren
- Department of Orthopaedic surgeryShe Xian HospitalHandanChina
| | - Ran Sun
- Department of Orthopaedic SurgeryThird Hospital of Hebei Medical UniversityShijiazhuangChina
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Matassi F, Innocenti M, Andrea CL, Zanna L, Malone J, Civinini R, Innocenti M. Timing for Safe Return to Sport after Medial Patellofemoral Ligament Reconstruction: The Role of a Functional Test Battery. J Knee Surg 2021; 34:363-371. [PMID: 31486055 DOI: 10.1055/s-0039-1696647] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The purpose of this article was to analyze clinical and functional results after medial patellofemoral ligament (MPFL) reconstruction and to establish if a computer-assisted physical test battery could determine a "safe timing" to return to sport. We hypothesized that "time-based" criteria to declare safe return to sport could not be reliable to predict functional recover. Fifty-eight young athletic patients were selected after isolated reconstruction of MPFL. The minimum follow-up was 8 months. All the patients were evaluated subjectively with Kujala and Short Form 36 (SF-36) scores and objectively through a standardized computer-assisted physical battery of seven tests (Back in Action, Corehab). No patient was lost at the end point of follow-up and no recurrence of patellar dislocation was reported. At 8 months, 31 patients (53.4%) returned to sport at preoperative levels, and 23 (39.6%) participated in sports at lower levels. The subjective evaluation reported an increase of Kujala (60-92.7) and SF-36 score (28.6/25.4-52.2/53.6). At computer-assisted objective assessment, only 23 patients (39.6%) fulfilled the criteria for safe return to sport, while 31 (53.4%) got an insufficient outcome and 4 (6.9%) failed to complete the test. From our data, clinical scores after MPFL reconstruction provide only little insight into return to sport. The introduction of a computer-assisted objective analysis in the decision-making process for proper return to sport is necessary to evaluate functional recovery and dynamic knee stability.
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Affiliation(s)
| | | | | | - Luigi Zanna
- University of Florence, Orthopaedic Clinic CTO, Florence, Italy
| | - Joseph Malone
- Department of Internal Medicine/Orthopaedics, Torshovsdalen Legesenter and Oslo Legevakt, Oslo, Norway
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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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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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Belkin NS, Meyers KN, Redler LH, Maher S, Nguyen JT, Shubin Stein BE. Medial Patellofemoral Ligament Isometry in the Setting of Patella Alta. Arthroscopy 2020; 36:3031-3036. [PMID: 32035170 DOI: 10.1016/j.arthro.2020.01.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 02/02/2023]
Abstract
PURPOSE To investigate alterations in technique for medial patellofemoral ligament (MPFL) reconstruction in the setting of patella alta and describe the effect of these alterations on MPFL anatomometry. METHODS Ten cadaveric knees were used. Four candidate femoral attachment sites of MPFL were tested. The attachment sites were Schottle's point (SP), 5 mm distal to SP, 5 mm proximal to SP, and 10 mm proximal to SP. A suture anchor was placed at the upper 40% of the medial border of the patella with the emanating suture used to simulate the reconstructed ligament. MPFL maximum length change was calculated through a range of motion between 0° and 110°. Recordings at all 4 candidate femoral attachments sites were repeated after a flat tibial tubercle osteotomy and transfer to achieve alta as measured by the Caton-Deschamps Index (CDI) of 1.3, 1.4, and 1.5. RESULTS The 10 specimens had an average CDI of 0.99, range 0.87 to 1.16. In the native tibial tubercle condition, SP was more isometric through 20° to 70° range of motion, or anatomometric, than any other candidate femoral attachment location. With patella alta with a CDI of 1.3 and 1.4, attachment site 5 mm proximal to SP exhibited more anatomometry than SP. With patella alta with a CDI of 1.5, attachment site 10 mm proximal to SP exhibited more anatomometry than SP. CONCLUSIONS Increased patella alta significantly alters MPFL anatomometry. With increasing degrees of patella alta, more proximal candidate femoral attachment sites demonstrate decreased change in length compared with SP. None of the varied femoral attachments produced anatomometry over the entirety of the flexion range from 20° to 70°, suggesting that in cases of significant patella alta, proximalization the femoral attachment site of MPFL reconstruction may be necessary to achieve an anatomometric MPFL reconstruction. CLINICAL RELEVANCE A standardized, isolated MPFL reconstruction may be prone to failure in the setting of patella alta, given the anisometry demonstrated. Alternative femoral attachment sites for MPFL reconstruction should be considered in these patients.
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Affiliation(s)
- Nicole S Belkin
- Sports Medicine and Shoulder Service, Columbia University Orthopedics, New York, New York, U.S.A..
| | - Kathleen N Meyers
- Department of Biomechanics, New York, New York, U.S.A.; Hospital for Special Surgery, New York, New York, U.S.A
| | - Lauren H Redler
- Sports Medicine and Shoulder Service, Columbia University Orthopedics, New York, New York, U.S.A
| | - Suzanne Maher
- Hospital for Special Surgery Research Institute, New York, New York, U.S.A
| | | | - Beth E Shubin Stein
- Sports Medicine and Shoulder Service, New York, New York, U.S.A.; Orthopaedic Surgery, Weill Cornell Medical College, New York, New York, U.S.A
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Vacariu A, Studer K, Rutz E, Camathias C. High failure rate 10.8 years after vastus medialis transfer and lateral release (Green's quadricepsplasty) for recurrent dislocation of the patella. Arch Orthop Trauma Surg 2020; 140:1349-1357. [PMID: 31853621 DOI: 10.1007/s00402-019-03322-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE In adolescent patients with recurrent patellar dislocation, the Green's quadricepsplasty stabilizes the patella in a combination of a lateral release, a transfer of the medial head of the quadriceps onto the lateral part of the patella and an imbrication of the medial patellar retinaculum and joint capsule. This study aimed to evaluate the long-term performance, considering re-dislocations and functional outcomes. We hypothesized a high failure rate in the long term. METHODS In this single surgeon and single center study 26 knees in 23 patients (mean age 14.2 years; 4-22 years, 18 females) with recurrent patellofemoral dislocation underwent a vastus medialis transfer, medial reefing and lateral release as it was described by Green in 1965 with a mean follow-up 10.8 years (6-24 years). Clinical assessment was carried out with an IKDC-score (international knee documentation committee) and a self-assessment for each knee separately. The radiologic evaluation included measurement of the patella height, the grade of trochlear dysplasia and the sulcus angle. RESULTS In 12 of 26 cases (46.2%) the patella did not re-dislocate after vastus medialis transfer and lateral release. In 11 of 26 cases (42.3%), the patients described the function of their knees as normal or nearly normal according to IKDC after the surgical treatment without any re-dislocation. In 14 of 26 cases (53.8%), the patella re-dislocated. 7 of these 14 cases underwent a revision operation. Re-dislocations occurred after a mean interval of 21 months after the index procedure. In only 2 of 26 cases (7.7%) the patients returned to sports. CONCLUSION Green's procedure to stabilize patellofemoral instabilities results in a high failure rate on the long-term and low subjective assessments. We do not recommend performing vastus medialis transfer, medial imbrication and lateral release as a standalone technique. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Alexander Vacariu
- Department of Traumatology and Orthopedic Surgery, University Hospital of Basel, Spitalstrasse 21, 4058, Basel, Switzerland.
| | | | - Erich Rutz
- Department of Pediatric Orthopedic Surgery, University Childrens Hospital of Basel, Basel, Switzerland.,Medical School Basel, University of Basel, Basel, Switzerland
| | - Carlo Camathias
- Praxis Zeppelin, St. Gallen, Switzerland.,Medical School Basel, University of Basel, Basel, Switzerland
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Ishibashi Y, Kimura Y, Sasaki E, Sasaki S, Yamamoto Y, Tsuda E. Medial Patellofemoral Ligament Reconstruction Using FiberTape and Knotless SwiveLock Anchors. Arthrosc Tech 2020; 9:e1197-e1202. [PMID: 32874901 PMCID: PMC7451444 DOI: 10.1016/j.eats.2020.04.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 04/26/2020] [Indexed: 02/03/2023] Open
Abstract
Medial patellofemoral ligament (MPFL) reconstruction usually involves hamstring autografts and is associated with donor-site morbidity. Excellent short-term results with MPFL reconstruction using synthetic materials have been reported. Although synthetics do not sacrifice autologous tissues, their material properties are significantly different from those of biological tissues. Therefore, accurate surgical procedures are required to achieve excellent results. The purpose of this report was to describe our surgical method for MPFL reconstruction using FiberTape and knotless SwiveLock anchors.
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Affiliation(s)
- Yasuyuki Ishibashi
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan,Address correspondence to Yasuyuki Ishibashi, M.D., Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori, 036-8562, Japan.
| | - Yuka Kimura
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Eiji Sasaki
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shizuka Sasaki
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Yuji Yamamoto
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Eiichi Tsuda
- Department of Rehabilitation Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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Dall'Oca C, Elena N, Lunardelli E, Ulgelmo M, Magnan B. MPFL reconstruction: indications and results. ACTA BIO-MEDICA : ATENEI PARMENSIS 2020; 91:128-135. [PMID: 32555079 PMCID: PMC7944812 DOI: 10.23750/abm.v91i4-s.9669] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 05/05/2020] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND AIM The medial patellofemoral ligament (MPFL) is the most important structure commonly injured during lateral patellar dislocation and its rupture accounts for 3% of total knee injuries. MPFL reconstruction (MPFLR) is a reliable procedure with good results but variable rates of recurrent instability. The aim of this study is to underline the proper indications for the MPFLR reconstruction and to explain all the pearls and pitfalls regarding the MPFLR both in our experience and found in the latest literature. METHODS A comprehensive search in the latest literature using various combinations of the keywords MPFL, MPFLR, dislocation, treatment was performed. The following data were extracted: diagnosis methods, indications and contraindications for isolated MPFLR, type of management, recurrence of instability, outcomes and complications. RESULTS History of multiple patellar dislocations is the most relevant indication for ligament reconstruction especially after a failed course of conservative treatment in presence of persistent patello-femoral instability. Gold standard technique for MPFLR has not been clearly defined yet. CONCLUSIONS There is still poor literature about outcome comparisons, therefore it is challenging to decide which technique is the most appropriate as surgical procedures are continuously developing. The ideal candidates for MPFLR have to be decided after a throughout evaluation and careful planning and, with nowadays knowledge, it is possible to put indication for a reconstruction exposing the patient to minimal risks.
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Ye M, Zhang H, Liang Q. Clinical Outcomes After Medial Patellofemoral Ligament Reconstruction Using Transosseous Sutures Versus Suture Anchors: A Prospective Nonrandomized Controlled Trial. Orthop J Sports Med 2020; 8:2325967120917112. [PMID: 32490023 PMCID: PMC7238809 DOI: 10.1177/2325967120917112] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Accepted: 01/22/2020] [Indexed: 11/15/2022] Open
Abstract
Background Patellar instability remains a challenging problem for orthopaedic surgeons. Recurrent patellar instability is traditionally treated with medial patellofemoral ligament (MPFL) reconstruction using a suture anchor or bone tunnel technique. Although the use of transosseous sutures was recently described for MPFL reconstruction, relevant clinical data have not been reported. Purpose/Hypothesis The purpose of this study was to compare a new transosseous suture fixation technique with the suture anchor technique for MPFL reconstruction. The hypothesis was that reconstruction with transosseous sutures would show similar clinical results to reconstruction with suture anchors. Study Design Cohort study; Level of evidence, 2. Methods There were 65 patients with recurrent lateral patellar dislocations from January 2014 to December 2016 who were included in this prospective nonrandomized controlled trial. In total, 31 patients underwent MPFL reconstruction with suture anchors at the patella site (suture anchor group), while the other 34 patients underwent MPFL reconstruction with transosseous sutures (transosseous suture group). The main outcome variable (patellar redislocation) was recorded at follow-up (range, 25-60 months). The International Knee Documentation Committee (IKDC) score, Kujala score, range of motion, congruence angle, patellar tilt, redislocation rate, and complications were collected preoperatively and/or postoperatively. Results No recurrent dislocations or other complications were observed in any of the patients. No significant differences were found at follow-up between the suture anchor and transosseous suture groups for subjective IKDC score, Kujala score, congruence angle, patellar tilt, redislocation rate, or range of motion. Conclusion This short-term study showed that after MPFL reconstruction (suture anchors or transosseous sutures), patellar stability could be restored. With the numbers available, no significant differences in outcome scores were observed between patients in the transosseous suture and suture anchor groups.
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Affiliation(s)
- Mao Ye
- Department of Orthopedics, Joint Surgery, and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Hangzhou Zhang
- Department of Orthopedics, Joint Surgery, and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, China
| | - Qingwei Liang
- Department of Orthopedics, Joint Surgery, and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, China
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Sakamoto Y, Sasaki S, Kimura Y, Yamamoto Y, Tsuda E, Ishibashi Y. Patellofemoral Contact Pressure for Medial Patellofemoral Ligament Reconstruction Using Suture Tape Varies With the Knee Flexion Angle: A Biomechanical Evaluation. Arthroscopy 2020; 36:1390-1395. [PMID: 31954184 DOI: 10.1016/j.arthro.2019.12.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 12/18/2019] [Accepted: 12/18/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE The purpose of this study was to evaluate the effect of the knee flexion angle during graft fixation on patellofemoral (PF) contact pressure in medial patellofemoral ligament (MPFL) reconstruction using polyester suture tape and knotless anchors. METHODS Nine human knees (mean age 74.9 ± 14.1 years) were used in this study. Polyester suture tape was fixed at the medial edge of the patella with two 3.5-mm knotless anchors, and then to the femur with a 4.75-mm knotless anchor at 4 different knee flexion angles (0°, 30°, 60°, and 90°). A pressure sensor was used to measure the maximum contact pressure (MCP) of the medial and lateral PF joints in the intact knee and in postreconstruction knees at each knee flexion angle (0°, 30°, 60°, and 90°). Each MCP was normalized to that of the intact knee. A statistical comparison was made between MCP in the intact and reconstructed knees. RESULTS The normalized MCP of the medial PF joint fixed at either 0° or 30° significantly increased at 60° of knee flexion (P = .036 and .042, respectively) and at 90° of knee flexion (P = .002 and .001, respectively). Conversely, the normalized MCP fixed at 60° and 90° remained at the same level as the intact knees at all angles of knee flexion. The normalized MCP of the lateral PF joint showed no significant difference at any fixation angle compared with intact knees. CONCLUSION To avoid excessive PF joint contact pressure after MPFL reconstruction, it may be best to fix polyester suture tape between 60° and 90° of knee flexion. CLINICAL RELEVANCE Fixation of the polyester suture tape with a knotless anchor for MPFL reconstruction should be at 60° to 90° of knee flexion to most closely restore PF joint contact pressures to that of the intact knee.
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Affiliation(s)
- Yukiko Sakamoto
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
| | - Shizuka Sasaki
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Yuka Kimura
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Yuji Yamamoto
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Eiichi Tsuda
- Department of Rehabilitation Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Yasuyuki Ishibashi
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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Yoon KH, Kim EJ, Kwon YB, Hwang IU, Kim SG. Comparison of Clinical and Radiological Outcomes Between Transosseous Tunnel and Suture Anchor Patellar Fixation for Medial Patellofemoral Ligament Reconstruction: A Cohort Study With 2-Year Follow-up. Orthop J Sports Med 2020; 8:2325967120917660. [PMID: 32490024 PMCID: PMC7238806 DOI: 10.1177/2325967120917660] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Several surgical methods have been developed for medial patellofemoral ligament reconstruction (MPFLR). However, the question of which patellar fixation method, suture anchor (SA) or transosseous tunnel (TO) fixation, achieves better overall outcomes remains to be answered. HYPOTHESIS SA patellar fixation will present comparable clinical outcomes and a lower complication rate compared with TO patellar fixation for MPFLR. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS We retrospectively reviewed the outcomes of 46 patients who underwent MPFLR with either TO fixation (n = 21; mean age, 24.4 ± 6.1 years) or SA fixation (n = 25; mean age, 24.1 ± 12.1 years) for the treatment of recurrent patellar dislocation. Clinical findings (International Knee Documentation Committee [IKDC] subjective score, Lysholm score, and Tegner activity score), radiological findings (congruence angle and patellar tilt angle), and complications (redislocation, patellar fracture, patellofemoral osteoarthritis progression, infection, and stiffness) were compared between the TO and SA groups at the 2-year follow-up visit. RESULTS The mean postoperative IKDC subjective and Lysholm scores did not differ significantly between groups. However, postoperative Tegner activity scores were significantly higher in the TO group than in the SA group (TO, 5.8 ± 1.4; SA, 4.9 ± 1.2; P = .012). Congruence angle did not differ significantly between the groups (TO, -3.2 ± 22.8; SA, -7.6 ± 17.8; P = .464). Patellar tilt angle was lower in the TO group than in the SA group (TO, 10.5 ± 5.4; SA, 13.7 ± 2.8; P = .015). During the follow-up period, the TO group had 1 redislocation and 2 patellar fractures, whereas the SA group had no redislocations or fractures. Patellofemoral osteoarthritis progression was significantly higher in the TO group than in the SA group at the 2-year follow-up visit (TO, 9/21; SA, 2/25; P = .006). CONCLUSION Both TO and SA patellar fixation methods for MPFLR showed improved clinical outcomes. When compared with TO fixation, SA fixation presented comparable clinical outcomes and a lower complication rate.
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Affiliation(s)
- Kyoung Ho Yoon
- Department of Orthopaedic Surgery, Kyung Hee University Hospital,
Seoul, Republic of Korea
| | - Eung Ju Kim
- Department of Orthopaedic Surgery, Kyung Hee University Hospital,
Seoul, Republic of Korea
| | - Yoo Beom Kwon
- Department of Orthopaedic Surgery, Kyung Hee University Hospital,
Seoul, Republic of Korea
| | - In Uk Hwang
- Department of Orthopaedic Surgery, Kyung Hee University Hospital,
Seoul, Republic of Korea
| | - Sang-Gyun Kim
- Department of Orthopedic Surgery, Korea University Ansan Hospital,
Gyeongki-do, Republic of Korea
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An VV, Sivakumar BS, Phan K, Fritsch BA, Sher D. Isolated versus combined medial patellofemoral ligament reconstruction for lateral instability of the patella. J Orthop Surg (Hong Kong) 2020; 27:2309499018820698. [PMID: 30798706 DOI: 10.1177/2309499018820698] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
INTRODUCTION Medial patellofemoral ligament reconstruction (MPFLR) is regularly combined with a tibial tuberosity transfer (TTT) in cases of recurrent patellar instability with underlying structural deformity. However, these indications for a TTT have recently come into question. This study aimed to assess the traditional indications by comparing the outcomes of isolated and combined MPFLR for the treatment of recurrent lateral patellar dislocation. METHODS A systematic review was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Included studies were those which reported the outcomes of either isolated or combined or both MPFLR. Studies were required to report at least one of the following: redislocation rate, revision due to instability, or the Kujala score. RESULTS We found no difference between isolated and combined MPFLR in terms of redislocation ( p = 0.48), revisions due to instability ( p = 0.36), positive apprehension tests ( p = 0.25), or the Kujala score ( p = 0.58). Combined reconstruction presented more complications compared to isolated procedures ( p = 0.05). Subgroup analysis revealed no significant difference between studies investigating isolated medial patellofemoral ligament reconstruction MPFLR performed in patients with normal tibial tuberosity-trochlear groove (TT-TG) distances only or in patients with both normal and elevated TT-TG distances. CONCLUSIONS According to the published data, there is no difference in outcomes between isolated and combined MPFLR. Underlying structural deformity did not demonstrate any significant effect on the success of the isolated MPFLR. Although there are definite indications for combined reconstruction, the current evidence suggests that our inclusion criteria may not be entirely correct. Further study is required to clarify and refine the true indications for combined MPFLR. LEVEL OF EVIDENCE III, meta-analysis of nonrandomized studies.
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Affiliation(s)
- Vincent Vg An
- 1 Faculty of Medicine, University of Sydney, Sydney, New South Wales, Australia
| | - Brahman S Sivakumar
- 2 Department of Orthopaedics, Royal North Shore Hospital, St Leonards, New South Wales, Australia
| | - Kevin Phan
- 1 Faculty of Medicine, University of Sydney, Sydney, New South Wales, Australia
| | - Brett A Fritsch
- 3 Department of Orthopaedics, Royal Prince Alfred Hospital, Camperdown, New South Wales, Australia
| | - Doron Sher
- 4 Department of Orthopaedics, Concord Repatriation General Hospital, Concord, New South Wales, Australia
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Selective bundle tensioning in double-bundle MPFL reconstruction to improve restoration of dynamic patellofemoral contact pressure. Knee Surg Sports Traumatol Arthrosc 2020; 28:1144-1153. [PMID: 31740983 DOI: 10.1007/s00167-019-05789-5] [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: 03/02/2019] [Accepted: 11/05/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE To evaluate the optimal graft tension angles in a medial patellofemoral ligament (MPFL) reconstruction with selective bundle tensioning in order to restore patellofemoral contact pressure distributions closest to the native state. METHODS Twelve human cadaveric knee specimens were mounted with the femur on a custom-made fixation device allowing free range of motion in the knee joint for testing. Using a sensitive pressure film (Tekscan) patellofemoral contact pressure was measured in 15° intervals during a dynamic flexion movement from 0°-90° in the native state, in cut MPFL and after MPFL-reconstruction with a gracilis tendon. The graft was separated in two bundles and was fixed independently on the patella using two knotless anchors. Two groups were made with either the proximal or distal bundle fixed at the femur at a knee flexion angle of 30° and the corresponding other bundle subsequently fixed at the femur at 15°, 45°, 60°, 75° and 90° of knee flexion using extra-cortical fixation and controlled tension of 2N in both groups. The sequence of the flexion angles at the graft fixation was alternated. Pressure measurements were repeated after every fixation of the graft. RESULTS Cutting the MPFL resulted in significantly reduced patellofemoral contact pressure at all flexion angles. After MPFL reconstruction the patellofemoral contact pressure remained significantly reduced during dynamic knee flexion in all tested double-bundle combinations (p < 0.05) except for fixation of the proximal bundle in 30° and the distal bundle in 75°. Selective evaluation of lateral patellofemoral contact pressure, however, showed significant reduction in all tested double-bundle combinations (p < 0.05) from 15° to 90°. Evaluation of isolated medial patellofemoral pressure changes showed no significant difference in all tested combinations compared to the intact knee. Furthermore, evaluation of the isolated proximal and distal patellofemoral contact pressure also revealed a significantly reduced contact pressure in all tested double-bundle combinations (p < 0.05) except for fixation of the proximal bundle in 30° and the distal bundle in 75°. CONCLUSION According to this study, selective bundle tensioning in anatomic MPFL-reconstruction should be considered as an easy and more anatomic alternative to current popular techniques to restore patella kinematics and give clear recommendation about knee flexion angle and tension during fixation. Although tensioning two bundles separately may further improve clinical results. If performed, fixation of the graft is recommended under low tension (2N) with the proximal bundle at 30° and the distal bundle at 75° of knee flexion.
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Migliorini F, Driessen A, Quack V, Gatz M, Tingart M, Eschweiler J. Surgical versus conservative treatment for first patellofemoral dislocations: a meta-analysis of clinical trials. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2020; 30:771-780. [PMID: 32048045 DOI: 10.1007/s00590-020-02638-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 02/05/2020] [Indexed: 12/25/2022]
Abstract
INTRODUCTION The first approach for acute patellar dislocation is still a debated topic. The purpose of the present study was to perform a meta-analysis evaluating the outcomes of the surgical approach compared to the conservative treatments for primary acute patellar dislocation. We hypothesize that a prompt surgical treatment may lead to better outcomes in terms of re-dislocations and quality of life. METHODS This meta-analysis was performed according to the PRISMA guidelines. All the prospective clinical trials comparing surgical and conservative treatment for first acute patellofemoral dislocation were included in this study. For the methodological quality assessment, the PEDro appraisal score was adopted. For the risk of publication bias, the funnel plot was performed. The statistical analysis was performed using the Review Manager Software 5.3 (The Nordic Cochrane Collaboration, Copenhagen). RESULTS The funnel plot detected a low risk of publication bias. According to the PEDro score, the methodological quality assessment was good. Data from 654 patients were collected, undergoing a mean of 53.8 ± 48.4 month follow-up. A total of 311 patients (17.66 ± 4.1 years old) were analyzed in the surgery group and 291 patients (19.25 ± 4.5 years old) in the conservative ones. The mean Kujala score resulted in greater favor of the surgery group (MD: 9.99%; P = 0.006). The analysis of the comparison of re-dislocations resulted in favor of the surgery group (OR: 0.41; P < 0.0001). The analysis of the comparison of persistent joint instability resulted in favor of the surgery group (OR: 0.41; P < 0.0001). CONCLUSIONS Data from the present study encourage a prompt surgical approach for the first patellofemoral dislocation.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedic Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany.
| | - Arne Driessen
- Department of Orthopaedic Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Valentin Quack
- Department of Orthopaedic Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Matthias Gatz
- Department of Orthopaedic Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Markus Tingart
- Department of Orthopaedic Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Jörg Eschweiler
- Department of Orthopaedic Surgery, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
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Zhang H, Ye M, Liang Q. Clinical Outcomes After Medial Patellofemoral Ligament Reconstruction With Suture Fixation of the Gracilis Tendon via Transosseous Tunnels. Orthop J Sports Med 2020; 8:2325967119900373. [PMID: 32095487 PMCID: PMC7011329 DOI: 10.1177/2325967119900373] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 10/10/2019] [Indexed: 11/16/2022] Open
Abstract
Background: Several fixation methods have been introduced in medial patellofemoral ligament (MPFL)
reconstruction. However, the optimal management of patients with recurrent patellar
dislocation remains controversial. Purpose: To present a case series with a minimum 2-year follow-up of 29 patients with recurrent
patellar dislocation who underwent a new transosseous suture fixation technique for MPFL
reconstruction. Study Design: Case series; Level of evidence, 4. Methods: From January 2014 through February 2016, a total of 29 patients with recurrent patellar
dislocation for which the MPFL was reconstructed with transosseous suture patellar
fixation were studied. All patients were available for follow-up (mean, 37.52 months;
range, 26-48 months). The patellar attachment was fixed by transosseous patellar
sutures. The International Knee Documentation Committee (IKDC) subjective knee score,
Kujala score, Tegner score, range of motion, congruence angle, patellar tilt angle, and
complications were assessed both pre- and postoperatively. Results: No recurrent dislocation was observed in any of the 29 patients for a minimum of 2
years. All outcome scores improved significantly from preoperatively to postoperatively:
the average IKDC subjective knee evaluation score from 53 to 87, Kujala from 54 to 90,
Lysholm from 50 to 89, and Tegner from 3 to 5 (P < .001 for all).
The congruence angle significantly decreased from 22° preoperatively to –3°
postoperatively, and the patellar tilt angle (Merchant) decreased from 23°
preoperatively to 5° postoperatively (P < .001 for both). In total,
25 patients (25/29; 86.21%) were completely pain-free when performing activities of
daily living at the last follow-up, and 27 patients (93.1%) rated themselves as very
satisfied or satisfied with the results. Conclusion: In patients with chronic recurrent patellar dislocation, transosseous patellar suture
fixation for MPFL reconstruction can significantly improve patellar stability and
achieve good results at short-term follow-up.
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Affiliation(s)
- Hangzhou Zhang
- Department of Orthopedics, Joint Surgery, and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Mao Ye
- Department of Orthopedics, Joint Surgery, and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Qingwei Liang
- Department of Orthopedics, Joint Surgery, and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
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Mehl J, Otto A, Comer B, Kia C, Liska F, Obopilwe E, Beitzel K, Imhoff AB, Fulkerson JP, Imhoff FB. Repair of the medial patellofemoral ligament with suture tape augmentation leads to similar primary contact pressures and joint kinematics like reconstruction with a tendon graft: a biomechanical comparison. Knee Surg Sports Traumatol Arthrosc 2020; 28:478-488. [PMID: 31410528 DOI: 10.1007/s00167-019-05668-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 08/06/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE To compare suture tape-augmented MPFL repair with allograft MPFL reconstruction using patellofemoral contact pressure and joint kinematics to assess the risk of patellofemoral over-constrainment at point zero. METHODS A total of ten fresh frozen cadaveric knee specimens were tested in four different conditions of the MPFL: (1) native, (2) cut, (3) reconstructed with tendon graft, and (4) augmented with suture tape. The patellofemoral mean pressure (MP), peak pressure (PP) and contact area (CA) were measured independently for the medial and lateral compartments using pressure-sensitive films. Patellar tilt (PT) and shift (PS) were measured using an optical 3D motion tracking system. Measurements were recorded at 0°, 10°, 20°, 30°, 60° and 90° of flexion. Both the tendon graft and the internal brace were preloaded with 2 N, 5 N, and 10 N. RESULTS There was no significant differences found between surgical methods for medial MP, medial PP, medial CA, lateral MP and PS at any preload or flexion angle. Significant differences were seen for lateral PP at 20° knee flexion and 10 N preload (suture tape vs. reconstruction: 1045.9 ± 168.7 kPa vs. 1003.0 ± 151.9 kPa; p = 0.016), for lateral CA at 10° knee flexion and 10 N preload (101.4 ± 39.5 mm2 vs. 108.7 ± 36.6 mm2; p = 0.040), for PT at 10° knee flexion and 2 N preload (- 1.9 ± 2.5° vs. - 2.5 ± 2.3°; p = 0.033) and for PT at 0° knee flexion and 10 N preload (- 0.8 ± 2.5° vs. - 1.8 ± 3.1°; p = 0.040). A preload of 2 N on the suture tape was the closest in restoring the native joint kinematics. CONCLUSIONS Suture tape augmentation of the MPFL resulted in similar primary contact pressures and joint kinematics in comparison with MPFL reconstruction using a tendon graft. A pretension of 2 N was found to restore the knee joint closest to normal patellofemoral kinematics.
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Affiliation(s)
- Julian Mehl
- Department of Orthopaedic Surgery, University of Connecticut, 263 Farmington Avenue, Farmington, CT, 06030, USA.,Department of Orthopaedic Sports Medicine, Technical University Munich, Ismaninger Strasse 22, 81675, Munich, Germany
| | - Alexander Otto
- Department of Trauma, Orthopaedic, Plastic and Hand Surgery, University Hospital of Augsburg, Augsburg, Germany
| | - Brendan Comer
- Department of Orthopaedic Surgery, University of Connecticut, 263 Farmington Avenue, Farmington, CT, 06030, USA
| | - Cameron Kia
- Department of Orthopaedic Surgery, University of Connecticut, 263 Farmington Avenue, Farmington, CT, 06030, USA
| | - Franz Liska
- Department of Orthopaedic Sports Medicine, Technical University Munich, Ismaninger Strasse 22, 81675, Munich, Germany
| | - Elifho Obopilwe
- Department of Orthopaedic Surgery, University of Connecticut, 263 Farmington Avenue, Farmington, CT, 06030, USA
| | - Knut Beitzel
- Department of Orthopaedic Sports Medicine, Technical University Munich, Ismaninger Strasse 22, 81675, Munich, Germany
| | - Andreas B Imhoff
- Department of Orthopaedic Sports Medicine, Technical University Munich, Ismaninger Strasse 22, 81675, Munich, Germany.
| | - John P Fulkerson
- Orthopaedic Associates of Hartford, 499 Farmington Avenue, Farmington, CT, 06032, USA
| | - Florian B Imhoff
- Department of Orthopaedic Sports Medicine, Technical University Munich, Ismaninger Strasse 22, 81675, Munich, Germany
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Migliorini F, Trivellas A, Driessen A, Quack V, Tingart M, Eschweiler J. Graft choice for isolated MPFL reconstruction: gracilis versus semitendinosus. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2020; 30:763-770. [PMID: 32008097 PMCID: PMC7990750 DOI: 10.1007/s00590-020-02636-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 01/29/2020] [Indexed: 01/25/2023]
Abstract
INTRODUCTION After the first patellar dislocation, most patients report damage of the medio-patellofemoral ligament (MPFL) and surgical reconstruction is required. The purpose of this study is to systematically review current evidence and to clarify the role of the gracilis and semitendinosus tendons as graft for isolated MPFL reconstruction. MATERIALS AND METHODS The present systematic review was conducted according to the PRISMA guidelines. The literature search was conducted in October 2019. All clinical trials using the semitendinosus and/or gracilis tendon grafts for isolated MPFL reconstruction in patients with patellofemoral instability were considered for inclusion. Only articles reporting a minimum of 12-month follow-up were considered. The PEDro score was used for the methodological quality assessment. RESULTS Data from 1491 procedures were collected. The mean follow-up was 36.12 months. There was comparability among the patient baseline. All the scores of interests (Kujala, Tegner, Lysholm) and range of motion scored better in the semitendinosus group. Moreover, in favour of the semitendinosus group, a statistically significant reduction of the revision surgeries and re-dislocations were evidenced. Apprehension test and persistent instability sensation found any statistical correlations. CONCLUSION Isolated MPFL reconstruction through semitendinosus tendon graft performed better than the gracilis in selected patients suffering from recurrent patellofemoral instability.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany.
| | - Andromahi Trivellas
- Department of Orthopaedics, David Geffen School of Medicine at UCLA, Suite 755, Los Angeles, CA, 90095, USA
| | - Arne Driessen
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Valentin Quack
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Markus Tingart
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Jörg Eschweiler
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
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Gao G, Liu P, Xu Y. Treatment of patellar dislocation with arthroscopic medial patellofemoral ligament reconstruction using gracilis tendon autograft and modified double-patellar tunnel technique: minimum 5-year patient-reported outcomes. J Orthop Surg Res 2020; 15:25. [PMID: 31969181 PMCID: PMC6977302 DOI: 10.1186/s13018-020-1556-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 01/14/2020] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND The purpose of this study was to retrospectively analyze the clinical outcomes of patients with recurrent patellar dislocation who underwent arthroscopic medial patellofemoral ligament (MPFL) reconstruction using gracilis tendon autograft and a modified double-patellar tunnel method. We hypothesized that our modified method would provide good clinical outcomes. METHODS Patients who underwent arthroscopic MPFL reconstruction with autograft gracilis tendon and modified double-patellar tunnels technique for recurrent patellar dislocation and were followed up for a minimum of 5 years were identified, and the clinical and follow-up data were retrospectively analyzed. Preoperatively, joint hypermobility was assessed with the Beighton score. The Insall-Salvati ratio, TT-TG distance, and Q angle were measured on radiographic images. Patient-reported outcomes including the Kujala, Lysholm, and Tegner scores were collected preoperatively and postoperatively. Patient satisfaction was assessed at the end of 5 years. Complications and recurrent dislocation occurring after surgery were recorded. RESULTS A total of 79 patients (94 knees) were enrolled; of these, 13 (16.5%) were lost to follow-up. The data of 66 patients (80 knees) were available for final analysis. Mean age at surgery was 21.3 ± 7.8 years. Mean follow-up time was 66.1 ± 5.5 months (range, 60-78 months). Postoperative patient-reported outcome was not associated with Beighton score, Insall-Salvati ratio, or TT-TG distance. Q angle was negatively correlated to Kujala scores and Lysholm scores. Severity of trochlear dysplasia was not associated with postoperative patient-reported outcome. The mean Kujala score increased from 69.4 ± 7.9 to 96.1 ± 1.9, the mean Tegner score increased from 3.1 ± 1.3 to 5.9 ± 1.3, and the mean Lysholm score increased from 73.5 ± 14.6 to 95.3 ± 3.4. Two patients experienced recurrent patellar dislocation during follow-up. CONCLUSIONS MPFL reconstruction using autologous gracilis tendon under arthroscopy appears to be a reliable and safe method for treating recurrent patellar dislocation. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Guanying Gao
- Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191 China
| | - Ping Liu
- Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191 China
| | - Yan Xu
- Institute of Sports Medicine, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191 China
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Migliorini F, Trivellas A, Colarossi G, Eschweiler J, Tingart M, Rath B. Single- versus double-bundle patellar graft insertion for isolated MPFL reconstruction in patients with patellofemoral instability: a systematic review of the literature. Arch Orthop Trauma Surg 2020; 140:769-776. [PMID: 32086557 PMCID: PMC8289805 DOI: 10.1007/s00402-020-03376-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Indexed: 02/07/2023]
Abstract
INTRODUCTION The MPFL reconstruction is performed either via a single-bundle (SB) or double-bundle (DB) procedure. The purpose of this study is to perform a systematic review comparing SB versus DB graft for recurrent patellofemoral instability, to summarize current evidence, and to clarify the role of both techniques. We focused on clinical scores, physical examination, complications, revision surgeries, and failures. MATERIAL AND METHODS In May of 2019 the main online databases were accessed. All the clinical studies treating isolated MPFL reconstruction for patellofemoral instability through a single and/or double-bundle graft were enrolled in the present systematic review. Only articles reporting primary isolated MPFL reconstruction, reporting a minimum of 12-months follow-up were considered for inclusion. RESULTS The scores of interest were in favour of the DB cohort: Kujala (+ 3.2, P = 0.03), Lysholm (+ 5.1, P = 0.001), Tegner (+ 0.3, P = 0.2), IKDC (+ 5.4, P = 0.01), VAS (+ 0.8, P = 0.3), ROM (+ 9.96, P = 0.04). In the DB graft, a reduction of overall complications (OR 0.59; P = 0.1), further surgeries (OR 0.64; P = 0.12) and re-dislocations (OR 0.61; P = 0.16) was observed. The SB group reported a reduction in the post-operative apprehension test (OR 2.42; P = 0.24). CONCLUSION Current study support the use of double-bundle tendon graft for isolated MPFL reconstruction in selected patients with recurrent patellofemoral instability.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany.
| | - Andromahi Trivellas
- Department of Orthopaedics, David Greffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Giorgia Colarossi
- Department of Cardiosurgery, RWTH Aachen University Clinic, Aachen, Germany
| | - Jörg Eschweiler
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Markus Tingart
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Björn Rath
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
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Migliorini F, Driessen A, Quack V, Schenker H, Tingart M, Eschweiler J. Patellar fixation graft via suture anchors versus tunnel techniques during isolated MPFL reconstruction for recurrent patellofemoral instability: a systematic review of the literature. Arch Orthop Trauma Surg 2020; 140:1201-1210. [PMID: 32318817 PMCID: PMC8208927 DOI: 10.1007/s00402-020-03420-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION There is still a lack of evidence concerning the patellar fixation of the medial patellofemoral ligament (MPFL) graft in selected patient with recurrent instability. The purpose of the present study was to investigate and compare clinical outcomes and further complications of isolated MPFL reconstruction via suture anchors versus tunnel techniques for recurrent patellofemoral instability. MATERIALS AND METHODS This systematic review of the literature was conducted according to the PRISMA guidelines. In September 2019, the main databases were accessed. All the clinical trials performing isolated MPFL reconstruction in patients with recurrent patellofemoral instability were included in the present study. Only articles fixing the MPFL graft through suture anchors and/ or patellar tunnel techniques were included in the analysis. RESULTS Data from 46 papers (1712 patients) were recorded. The mean follow-up was 40 ± 18 months. No differences were found in Kujala, Lysholm and Tegner score, International Knee Documentation Committee, visual analogic scale, range of motion and re-dislocation rate. The suture anchors fixation group detected reduced rate of apprehension test (OR: 0.6; p = 0.03), revision surgeries (OR: 0.4; p = 0.02) and anterior knee pain (OR: 0.05; p < 0.0001) and reduced not-classified complications (OR: 0.18; p < 0.0001). CONCLUSION Both the suture anchors and the bone-tunnels are a feasible option for isolated MPFL reconstruction in patients with recurrent patellofemoral instability. Patellar fixation via suture anchors evidenced a reduced rate of anterior knee pain, revision surgeries, apprehension test and an overall reduced complication compared to the bone-tunnel technique.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany.
| | - Arne Driessen
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Valentin Quack
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Hanno Schenker
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Markus Tingart
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Jörg Eschweiler
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
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Hiemstra LA, Kerslake S, Kupfer N, Lafave MR. Generalized joint hypermobility does not influence clinical outcomes following isolated MPFL reconstruction for patellofemoral instability. Knee Surg Sports Traumatol Arthrosc 2019; 27:3660-3667. [PMID: 30919002 DOI: 10.1007/s00167-019-05489-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Accepted: 03/18/2019] [Indexed: 11/26/2022]
Abstract
PURPOSE Generalized joint hypermobility (GJH) has frequently been described as a risk factor for patellofemoral instability; however, only a few primary research studies have demonstrated any evidence of a relationship. The primary purpose of this study was to determine if isolated proximal soft tissue stabilization for patellofemoral instability is as successful in patients with GJH compared those without, as measured by disease-specific quality-of-life (QOL), symptom scores and functional outcomes. The secondary purpose was to determine if clinical and patient-reported outcomes were influenced by patient demographic factors in the presence of joint hypermobility. METHODS Between 2009 and 2014, data were collected on 174/193 knees (92% follow-up) following an isolated medial patellofemoral ligament reconstruction (MPFL-R). Patients with a Beighton score of 4 or greater were classified as positive for GJH, and any score of 3 or less was classified as negative. Pre- and post-operative Banff Patella Instability Instrument (BPII) scores were compared using a two-sample t test to determine the influence of GJH on QOL. The relationship between the Beighton score, and demographic and clinical factors was explored using correlational analysis. Functional testing including balance and single-leg hop testing was conducted 1 and 2 years post-operatively. Limb symmetry and mean limb-to-limb performance differences were calculated. RESULTS In this cohort of isolated MPFL reconstructions, 55.1% had a positive Beighton score. There were seven surgical failures (3.6%). There was no evidence of a relationship between a positive Beighton score and pre-operative BPII scores, post-operative BPII scores or post-operative symptom scores. GJH did not correlate significantly with any post-operative functional testing measures. A positive Beighton score was inversely related to patient age and more prevalent in females. CONCLUSIONS This study determined that the presence of GJH did not influence disease-specific quality of life, physical symptom score or functional outcomes following MPFL reconstruction. LEVEL OF EVIDENCE III.
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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
| | - Nathalie Kupfer
- Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Canada
| | - Mark R Lafave
- Department of Health & Physical Education, Mount Royal University, Calgary, Canada
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Jaecker V, Neumann L, Shafizadeh S, Koenen P, Kanakamedala AC, Tjardes T. Radiographic images are inapplicable for a precise evaluation of the femoral tunnel position following MPFL reconstruction. Knee Surg Sports Traumatol Arthrosc 2019; 27:3432-3440. [PMID: 30715593 DOI: 10.1007/s00167-019-05378-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 01/24/2019] [Indexed: 11/27/2022]
Abstract
PURPOSE In medial patellofemoral ligament (MPFL) reconstruction, it remains controversial whether more accurate femoral tunnel positioning is correlated with improved clinical outcomes. The purpose was to verify the accuracy of methods for evaluating tunnel positioning, one of which is the use of postoperative radiographs, in determining the femoral tunnel position following MPFL reconstruction and to compare the variability of tunnel positions to the intraoperatively documented positions on a true-lateral view. METHODS Seventy-three consecutive MPFL reconstructions were prospectively enrolled. Femoral tunnel positions were intraoperatively determined using fluoroscopy to obtain true-lateral radiographs. Postoperatively, lateral radiographic images were taken. Seven independent radiologists and seven independent orthopaedic knee surgeons evaluated the femoral tunnel position and amount of malrotation for each radiograph. Deviations from the Schoettle's point were measured and repeated after 4 weeks. Intraobserver and interobserver analyses of variance were calculated to determine the reliability of measurements on both intraoperative and postoperative radiographs. RESULTS Fifty-six patients were included in the final analysis. Tunnel positions were unable to be identified on postoperative radiographs in 14% of cases on average, independent of the degree of radiograph rotation. Intraoperative images showed mean deviations from the tunnel position to the centre of Schoettle's point of 1.9 ± 1.4 mm and 1.6 ± 1.0 mm in anterior-posterior and proximal-distal direction, respectively. Postoperative radiographs showed mean anterior-posterior and deviations of 7.4 ± 4.4 mm and 8.9 ± 5.8 mm assessed by orthopaedic surgeons and 10.6 ± 6.3 mm and 11.6 ± 7.1 mm assessed by radiologists at first and repeated measurement, respectively. The mean proximal-distal deviations were 4.8 ± 4.4 mm and 6.5 ± 6.0 mm and 7.2 ± 6.3 mm and 8.1 ± 7.1 mm, respectively. Measurement of tunnel position on intraoperative fluoroscopic images was significantly different compared to postoperative radiographs for each of the 14 observers (p < 0.05). Significant intraobserver and interobserver differences between the first and repeat measurements for both orthopaedic surgeons and radiologists were observed (p < 0.05). CONCLUSION Measurement of the femoral tunnel position on postoperative lateral radiographs is not an accurate or reliable method for evaluating tunnel position after MPFL reconstruction due to exposure, contrast, and malrotation of the radiograph from a true-lateral image. In contrast, intraoperative fluoroscopic control allows for a precise lateral view and correct tunnel positioning. Thus, postoperative radiographic images may be unnecessary for the evaluation of femoral tunnel positions, particularly when intraoperative fluoroscopy has been used. STUDY DESIGN Level II, prospective cohort study.
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Affiliation(s)
- Vera Jaecker
- Department of Trauma and Orthopaedic Surgery, Witten/Herdecke University, Cologne Merheim Medical Centre, Ostmerheimer Strasse 200, 51109, Cologne, Germany
| | - Lars Neumann
- Department of Radiology, Cologne Merheim Medical Centre, Ostmerheimer Strasse 200, 51109, Cologne, Germany
| | - Sven Shafizadeh
- Department of Trauma and Orthopaedic Surgery, Witten/Herdecke University, Cologne Merheim Medical Centre, Ostmerheimer Strasse 200, 51109, Cologne, Germany. .,Department of Orthopaedic Surgery and Sports Traumatology, Witten/Herdecke University, Sana Medical Centre Cologne, Aachener Str. 445-449, 50933, Cologne, Germany.
| | - Paola Koenen
- Department of Trauma and Orthopaedic Surgery, Witten/Herdecke University, Cologne Merheim Medical Centre, Ostmerheimer Strasse 200, 51109, Cologne, Germany
| | - Ajay C Kanakamedala
- Department of Orthopaedic Surgery, NYU Langone Health, 301 East 17th St, New York, NY, 10003, USA
| | - Thorsten Tjardes
- Department of Trauma and Orthopaedic Surgery, Witten/Herdecke University, Cologne Merheim Medical Centre, Ostmerheimer Strasse 200, 51109, Cologne, Germany
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Migliorini F, Rath B, Tingart M, Meisen N, Eschweiler J. Surgical management for recurrent patellar dislocations in skeletally immature patients. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY AND TRAUMATOLOGY 2019; 29:1815-1822. [PMID: 31256290 DOI: 10.1007/s00590-019-02483-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/25/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Due to his multifactorial aetiology, treating patellofemoral instability can be a challenge for the orthopaedic surgeon. The incidence of patellofemoral instability shows a peak during adolescence, especially from 11 to 14 years old. AIM Several clinical studies focusing on recurrent patellar dislocations in skeletally immature patients have been published, reporting inconsistent or controversial results. Currently, there is a lack of consensus regarding the surgical management of these patients. The purpose of this study is to update current evidence and systematically review indications, treatments, and outcomes of surgical management for recurrent patellar dislocations in skeletally immature patients. METHODS A comprehensive review of the literature was performed according to the Preferred Reporting Items for Systematic Review and Meta-Analysis, the PRISMA Statement. The following electronic databases were accessed in February 2019: PubMed, Scopus, Google Scholar, CINAHL, EMBASE. All the articles treating surgical management for recurrent patellar dislocations in skeletally immature patients were considered for inclusion. For the methodological quality assessment, we referred to the Coleman Methodology Score (CMS). For the statistical analysis, we referred to the unpaired t-test to establish whether the results are statistically significant. RESULT The overall CMS resulted in 52.78 points, attesting a satisfactory methodological quality assessment to this systematic review. A total of 21 articles including 623 patients (577 knees) were evaluated. The overall mean age was 13.02 years. The mean follow-up was 46.61 months. The mean Kujala score improved from 58.94 ± 10.38 to 87.07 ± 7.68 points. The Lysholm score reported a pre- and post-operative mean values of 49.54 ± 14.20 and 88.32 ± 8.80, respectively. The mean Tegner Activity Scale scored 4.28 ± 1.22 at baseline, improving to 5.26 ± 0.83 post-operatively. A total of 4.19% of patients incurred into a major complication, while 9.6% sustained a minor one. We observed a total of 89 re-dislocations above 692 treated knees (12%). CONCLUSION The main findings of this study are that surgical procedures for skeletally immature patients affected by recurrent patellar dislocations are feasible and effective. Complications and re-dislocations occurred infrequently. It is of fundamental importance to treat precociously these patients in order to reduce the risk of further recurrences, to increase the level of sporting activity and improving the quality of life.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany.
| | - Björn Rath
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Markus Tingart
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
| | - Nadine Meisen
- MVZ Marienhospital Aachen Orthopädie, Roetgen, Germany
| | - Jörg Eschweiler
- Department of Orthopaedics, RWTH Aachen University Clinic, Pauwelsstraße 30, 52074, Aachen, Germany
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Hiemstra LA, Kerslake S, Kupfer N, Lafave M. Patellofemoral Stabilization: Postoperative Redislocation and Risk Factors Following Surgery. Orthop J Sports Med 2019; 7:2325967119852627. [PMID: 31259187 PMCID: PMC6585255 DOI: 10.1177/2325967119852627] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Background Patellofemoral instability is a common knee problem that is difficult to manage owing to its multifactorial etiology as well as the fact that predisposing pathoanatomic features vary from individual to individual. There is limited knowledge regarding the demographic and pathoanatomic risk factors or the relationship between these risk factors and the redislocation rate after surgical stabilization for this challenging condition. Purpose To analyze the postoperative redislocation rates and the prevalence of demographic and pathoanatomic risk factors for patients undergoing a patellofemoral stabilization. Study Design Case series; Level of evidence, 4. Methods Patients with symptomatic recurrent patellofemoral instability underwent a soft tissue patellofemoral stabilization procedure. A total of 342 patellofemoral stabilization procedures (reconstruction, n = 256; imbrication, n = 86) were assessed at a mean follow-up of 24.3 months. Concomitant procedures were performed in accordance with the à la carte concept of addressing significant anatomic or biomechanical characteristics. Two surgical cohorts were analyzed separately for reconstruction or imbrication to address laxity of the medial patellofemoral ligament (MPFL). Failure of the patellofemoral stabilization procedure was defined as postoperative redislocation of the patella. Prevalence of demographic and pathoanatomic risk factors was determined for all patients. Disease-specific patient-reported outcomes were assessed with the Banff Patella Instability Instrument (BPII). Results A redislocation rate of 5.1% was identified for MPFL reconstruction and 20.9% for MPFL imbrication. For both MPFL procedures, age at time of surgery was significantly younger for the failed group as compared with the intact group. Postoperative BPII scores were significantly lower for patients who subsequently experienced a surgical failure as compared with intact surgery for both MPFL reconstruction (P = .048) and MPFL imbrication (P = .003). Conclusion Patellofemoral stabilization with an à la carte approach to surgical selection demonstrated a low postoperative redislocation rate and good clinical results. Younger age at time of surgery was associated with surgical failure. This information may be used to guide surgical decision making and patient education.
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Affiliation(s)
- Laurie A Hiemstra
- Banff Sport Medicine, Banff, Alberta, Canada.,Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | | | - Nathalie Kupfer
- MD Program, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Mark Lafave
- Department of Health and Physical Education, Mount Royal University, Calgary, Alberta, Canada
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