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Yamashita S, Ishizuka S, Sakai T, Oba H, Sakaguchi T, Mizuno T, Kawashima I, Tsukahara T, Takahashi S, Kurokouchi K, Imagama S. Potential of patellar height measurement methods in predicting recurrent patellar dislocation incidence: a case-control study. BMC Musculoskelet Disord 2023; 24:707. [PMID: 37670298 PMCID: PMC10478238 DOI: 10.1186/s12891-023-06813-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 08/19/2023] [Indexed: 09/07/2023] Open
Abstract
BACKGROUND Recurrent patellar dislocation (RPD) is a multifactorial disease that affects young and active people. Patellar height measurements are used clinically to screen and diagnose knee conditions. However, there are no known studies that have assessed and compared the performance of patellar height indices for predicting the incidence of RPD, which could be used to recommend surgical treatment after primary patellar dislocation. This case-control study aimed to determine if the patellar height index could be used to predict the incidence of RPD, and to identify the optimal method in terms of its diagnostic ability for RPD. METHOD Altogether, 133 patients (52 patients with RPD [Group R] and 81 sex- and age-matched controls [Group C]) were enrolled in this study. The Insall-Salvati (IS), Blackburne-Peel (BP), Caton-Deschamps (CD), and modified IS (mIS) methods were used to measure the patellar height index. The intra-observer and inter-observer reliabilities of these four methods were determined using intraclass correlation coefficients. A receiver operating characteristic curve analysis was performed to evaluate the predictive ability of each index and identify the cut-off values that indicated significantly increased risk of RPD. RESULTS Patient demographics were similar between the two groups. The inter-observer and intra-observer reliabilities were good for all four methods. In patients with RPD, the mean index values for the four methods were significantly higher than those in the matched controls. The area under the curve (AUC) values for IS, BP, CD, and mIS were 0.91 (standard error [SE], 0.03; 95% confidence interval [CI], 0.84-0.96), 0.72 (SE, 0.05; 95% CI, 0.63-0.81), 0.86 (SE, 0.03; 95% CI, 0.79-0.92), and 0.96 (SE, 0.01; 95% CI, 0.94-0.99), respectively. CONCLUSION Patellar height indices had high predictive performance for the incidence of RPD. The mIS method had the highest AUC.
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Affiliation(s)
- Satoshi Yamashita
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho Showaku, Nagoya, 4668550, Aichi, Japan
| | - Shinya Ishizuka
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho Showaku, Nagoya, 4668550, Aichi, Japan.
| | - Tadahiro Sakai
- Department of Orthopedic Surgery, Toyota Memorial Hospital, Aichi, Japan
| | - Hiroki Oba
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho Showaku, Nagoya, 4668550, Aichi, Japan
| | - Takefumi Sakaguchi
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho Showaku, Nagoya, 4668550, Aichi, Japan
| | - Takafumi Mizuno
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho Showaku, Nagoya, 4668550, Aichi, Japan
| | - Itaru Kawashima
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho Showaku, Nagoya, 4668550, Aichi, Japan
| | | | - Shigeo Takahashi
- Department of Orthopaedic Surgery and Arthroscopy Center, Juko Memorial Hospital, Nagoya, Japan
| | - Kazutoshi Kurokouchi
- Department of Orthopaedic Surgery and Arthroscopy Center, Juko Memorial Hospital, Nagoya, Japan
| | - Shiro Imagama
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho Showaku, Nagoya, 4668550, Aichi, Japan
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Lee DY, Kang DG, Jo HS, Heo SJ, Bae JH, Hwang SC. A systematic review and meta-analysis comparing conservative and surgical treatments for acute patellar dislocation in children and adolescents. Knee Surg Relat Res 2023; 35:18. [PMID: 37349852 DOI: 10.1186/s43019-023-00189-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 05/02/2023] [Indexed: 06/24/2023] Open
Abstract
PURPOSE This study sought to clarify treatment evidence to treat patellar dislocation by evaluating which treatment could yield better improvement of clinical outcomes for acute patellar dislocation in children and adolescents 18 years of age or younger. MATERIALS AND METHODS MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials electronic databases were searched for relevant articles comparing clinical outcomes of conservative and surgical treatments for acute patellar dislocation in children and adolescents published from March 2008 to August 2022. Data searching, extraction, analysis, and quality assessment were performed on the basis of the Cochrane Collaboration guidelines. The quality assessment of each study was investigated using the Physiotherapy Evidence Database (PEDro) critical appraisal scoring system and Newcastle-Ottawa Quality Assessment Scale scores. To calculate the overall combined effect size for each outcome, Review Manager Version 5.3 (The Cochrane Collaboration, Software Update, Oxford) was employed. RESULTS Three randomized controlled trials (RCTs) and one prospective study were investigated. In terms of pain [mean difference (MD) 6.59, 95% confidence interval (CI) 1.73-11.45, I2 0%], there were significantly better outcomes in conservative group. Nevertheless, there were no significant differences in any evaluated outcomes such as redislocation [risk ratio (RR) 1.36, 95% CI 0.72-2.54, I2 65%], Kujala score (MD 3.92, 95% CI -0.17 to 8.01, I2 0%), Tegner score (MD 1.04, 95% CI -0.04 to 2.11, I2 71%), or subjective results (RR 0.99, 95% CI 0.74-1.34, I2 33%) between conservative and surgical treatment groups. CONCLUSIONS Despite better pain outcomes with conservative group, the present study revealed no significant differences in clinical outcomes between conservative treatment and surgical treatment in children and adolescents with acute patellar dislocation. Since there are no significant differences in clinical outcomes between the two groups, routine surgical treatment is not advocated for treating acute patellar dislocation in children and adolescents.
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Affiliation(s)
- Dong-Yeong Lee
- Department of Orthopaedic Surgery, Barun Hospital, Jinju, Republic of Korea
| | - Dong-Geun Kang
- Department of Orthopaedic Surgery, College of Medicine and Gyeongsang National University and Changwon Hospital, Changwon, Republic of Korea
| | - Ho-Seung Jo
- Department of Orthopaedic Surgery, SMG Yeonse Hospital, Changwon, Republic of Korea
| | - Se-Joon Heo
- Department of Orthopaedic Surgery, College of Medicine and Gyeongsang National University and Hospital, Jinju, Republic of Korea
| | - Ji-Ho Bae
- Department of Orthopaedic Surgery, College of Medicine and Gyeongsang National University and Hospital, Jinju, Republic of Korea
| | - Sun-Chul Hwang
- Department of Orthopaedic Surgery, College of Medicine and Gyeongsang National University and Hospital, Jinju, Republic of Korea.
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Jiang J, Yi Z, Li J, Liu Y, Xia Y, Wu M. Medial Patellofemoral Ligament Reconstruction is Preferred to Repair or Reefing for First-Time Patellar Dislocation: A Systematic Review and Meta-analysis. Indian J Orthop 2023; 57:177-188. [PMID: 36777132 PMCID: PMC9880132 DOI: 10.1007/s43465-022-00770-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 10/21/2022] [Indexed: 11/07/2022]
Abstract
Purpose The purpose of this systematic review aimed to investigate the clinical outcome of medial patellofemoral ligament (MPFL) reconstruction, MPFL repair and medial reefing for patients with first-time patellar dislocation. Methods Databases of PubMed, EMBASE, Cochrane Library and Web of Science were searched up to May 8, 2022. Only articles treating first-time patellar dislocation with MPFL reconstruction, MPFL repair and medial reefing were included in the analysis. Eligible identification, data extraction, quality assessment and statistical analysis were performed by two independent reviewers. The primary outcome measures were the incidences of postoperatively redislocation and reoperation. The second outcomes were the Kujala functional score and complications (including infection, osteoarthritis, and loss of range of motion). Results Twenty-two studies involving 668 patients met the inclusion criteria. Of which, four studies involving 126 patients were in MPFL reconstruction group, ten studies involving 220 patients in MPFL repair group and 9 studies involving 322 patients in medial reefing group. Our results showed that the MPFL reconstruction (1.8%, 95% CI - 0.5 to 4.0%) had a significantly lower rate of postoperative redislocation and reoperation rate than the MPFL repair (15.4%, 95% CI 5.2-25.7%) and medial reefing (18.0%, 95% CI 9.3-26.7%). Besides, no significant differences were found in the Kujala score and complication rate among the three treatments. Conclusion The available evidence demonstrated that MPFL reconstruction could achieve significantly lower redislocation rate and reoperation rate than MPFL repair and medial reefing after first-time patella dislocation. Furthermore, there was not enough evidence to reveal that MPFL reconstruction provided better functional outcome compared with MPFL repair and medial reefing. MPFL reconstruction is a preferred surgical treatment for patients with first-time patellar dislocation. Level of Evidence Level IV, systematic review of Level I-IV.
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Affiliation(s)
- Jin Jiang
- Department of Orthopaedics, Lanzhou University Second Hospital, No. 82 Cuiyingmen, Chengguan District, Lanzhou, 730030 Gansu China
| | - Zhi Yi
- Department of Orthopaedics, Lanzhou University Second Hospital, No. 82 Cuiyingmen, Chengguan District, Lanzhou, 730030 Gansu China
| | - Junmin Li
- Department of Pharmacy, Lanzhou University Second Hospital, No. 82 Cuiyingmen, Chengguan District, Lanzhou, 730030 Gansu China
| | - Yan Liu
- School of Pharmacy, Lanzhou University, No. 82 Cuiyingmen, Chengguan District, Lanzhou, 730030 Gansu China
| | - Yayi Xia
- Department of Orthopaedics, Lanzhou University Second Hospital, No. 82 Cuiyingmen, Chengguan District, Lanzhou, 730030 Gansu China
| | - Meng Wu
- Department of Orthopaedics, Lanzhou University Second Hospital, No. 82 Cuiyingmen, Chengguan District, Lanzhou, 730030 Gansu China
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Rueth MJ, Koehl P, Schuh A, Goyal T, Wagner D. Return to sports and short-term follow-up of 101 cases of medial patellofemoral ligament reconstruction using gracilis tendon autograft in children and adolescents. Arch Orthop Trauma Surg 2023; 143:447-452. [PMID: 35171327 DOI: 10.1007/s00402-022-04365-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 01/19/2022] [Indexed: 02/02/2023]
Abstract
INTRODUCTION An acute patellofemoral dislocation is the most common acute knee injury in children. Recent studies suggest up to 40% of immature patients may develop recurrent instability. MPFL reconstruction has become a mainstay for the treatment of patellofemoral instability. Aim of the recent study is to show our experiences of MPFL reconstruction in patellar instability in immature patients using a gracilis autograft in respect to return to sport, growth plate disorders and short-term results. MATERIALS AND METHODS A total of 101 patients (50 females, 51 males) were included in this retrospective study. Mean age at time of operation was 14.8 ± 1.6 years. Primary outcome measures included patient satisfaction, Kujala score, recurrent instability, return to normal activity, return to sports, clinical leg axis and complications. Mann-Whitney U test was used for statistical analysis and alpha was set at p < 0.05 to declare significance. RESULTS At a mean follow-up of 32.0 ± 12.1 months 90/101 patients could be followed-up. 84% of all patients were satisfied or very satisfied with the result at latest follow-up. 86.6% of all patients were able to return to sports, 2.3% had a relevant deviation of the clinical leg axis, but symmetrical. In sum complication rate was 2.9%. Redislocation rate was 0.9% (1/101). Kujala Score improved significantly from 47.1 preoperatively to 85.3 postoperatively (p < 0.01). CONCLUSION Anatomic MPFL reconstruction using gracilis tendon allograft tissue is a safe procedure in children and adolescents with low risk of recurrent instability.
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Affiliation(s)
- Markus-Johannes Rueth
- Hospital of Trauma Surgery, Department of Sport Orthopedics and Reconstructive Surgery, Marktredwitz Hospital, 95615, Marktredwitz, Germany.
| | - Philipp Koehl
- Hospital of Trauma Surgery, Marktredwitz Hospital, 95615, Marktredwitz, Germany
| | - Alexander Schuh
- Hospital of Trauma Surgery, Department of Musculoskeletal Research, Marktredwitz Hospital, 95615, Marktredwitz, Germany
| | - Tarun Goyal
- Department of Orthopaedics, All India Institute of Medical Sciences, Bathinda, Bathinda, Punjab, India
| | - Daniel Wagner
- Hessingpark-Clinic GmbH, Hessingstraße 17, 86199, Augsburg, Germany
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MPFL repair after acute first-time patellar dislocation results in lower redislocation rates and less knee pain compared to rehabilitation: a systematic review and meta-analysis. Knee Surg Sports Traumatol Arthrosc 2022:10.1007/s00167-022-07222-w. [PMID: 36372845 DOI: 10.1007/s00167-022-07222-w] [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: 08/25/2022] [Accepted: 11/02/2022] [Indexed: 11/14/2022]
Abstract
PURPOSE This study aimed to explore the efficacy of medial patellofemoral ligament (MPFL) repair versus nonoperative rehabilitation treatment on the rate of patellar redislocation and functional outcomes in skeletally mature patients with traumatic, first-time patellar dislocations. MATERIALS AND METHODS MEDLINE, PubMed and EMBASE were searched from database inception to May 2022 for studies examining the management options for acute first-time patellar dislocations. This study was conducted in accordance with PRISMA and R-AMSTAR guidelines. Data on redislocation rates, functional outcomes including the Kujala score for anterior knee pain, and complication rates were extracted. A meta-analysis was used to pool the mean postoperative Kujala score and calculate the proportion of patients sustaining redislocations using a random effects model. Quality assessment of included studies was performed for all included studies using the MINORS and Detsky scores. RESULTS This review included a total of 25 studies and 1,361 patients. The pooled mean redislocation rate in 15 studies comprising 798 patients in the rehabilitation group was 30% (95% CI 25-36%, I2 = 65%). Moreover, the pooled mean redislocation rate in 10 studies comprising 170 patients undergoing MPFL repair was 7% (95% CI 3-12%, I2 = 30%). The pooled mean postoperative Kujala score in 8 studies comprising 396 patients in the rehabilitation group was 82.5 (95% CI 78.3-86.8, I2 = 91%), compared to a score of 88 (95% CI 87-90, I2 = 76%) in 3 studies comprising 94 patients in the repair group. Range of motion deficits was reported in 3.8% of 893 patients in the rehabilitation group and 2.0% of 205 patients in the repair group. CONCLUSION MPFL repair resulted in a lower rate of redislocation, less knee pain, and noninferiority with respect to a range of motion deficits compared to nonoperative treatment for the management of acute first-time patellar dislocations. LEVEL OF EVIDENCE IV.
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Watson R, Sullivan B, Stone AV, Jacobs C, Malone T, Heebner N, Noehren B. Lateral Patellar Dislocation: A Critical Review and Update of Evidence-Based Rehabilitation Practice Guidelines and Expected Outcomes. JBJS Rev 2022; 10:01874474-202205000-00004. [PMID: 35748823 DOI: 10.2106/jbjs.rvw.21.00159] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
» Nonoperative treatment of a lateral patellar dislocation produces favorable functional results, but as high as 35% of individuals experience recurrent dislocations. » Medial patellofemoral ligament reconstruction is an effective treatment to prevent recurrent dislocations and yield excellent outcomes with a high rate of return to sport. » Both nonoperative and postoperative rehabilitation should center on resolving pain and edema, restoring motion, and incorporating isolated and multijoint progressive strengthening exercises targeting the hip and knee. » Prior to return to sports, both functional and isolated knee strength measurements should be used to determine leg symmetry strength and to utilize patient-reported outcome measures to assess the patient's perceived physical abilities and patellofemoral joint stability.
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Affiliation(s)
- Richard Watson
- Department of Physical Therapy, University of Kentucky, Lexington, Kentucky
| | - Breanna Sullivan
- Department of Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky
| | - Austin V Stone
- Department of Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky
| | - Cale Jacobs
- Department of Orthopaedic Surgery and Sports Medicine, University of Kentucky, Lexington, Kentucky
| | - Terry Malone
- Department of Physical Therapy, University of Kentucky, Lexington, Kentucky
| | - Nicholas Heebner
- Department of Athletic Training, University of Kentucky, Lexington, Kentucky
| | - Brian Noehren
- Department of Physical Therapy, University of Kentucky, Lexington, Kentucky
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Ahrend MD, Eisenmann T, Herbst M, Gueorguiev B, Keller G, Schmidutz F, Döbele S, Schröter S, Ihle C. Increased tibial tubercle-trochlear groove and patellar height indicate a higher risk of recurrent patellar dislocation following medial reefing. Knee Surg Sports Traumatol Arthrosc 2022; 30:1404-1413. [PMID: 34032867 PMCID: PMC9007812 DOI: 10.1007/s00167-021-06581-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 04/13/2021] [Indexed: 12/15/2022]
Abstract
PURPOSE Identifying anatomical risk factors on recurrent dislocation after medial reefing is important for deciding surgical treatment. The present study aimed to retrospectively analyze the preoperative magnetic resonance imaging (MRI)-based parameters of patients treated with medial reefing and whether these parameters lead to a higher risk of recurrent dislocation. METHODS Fifty-five patients (18.6 ± 6.6 years) who underwent medial reefing after primary traumatic patellar dislocation (84% with medial patellofemoral ligament [MPFL] rupture) were included. Patients were followed up for at least 24 months postoperatively (3.8 ± 1.2 years) to assess the incidence of recurrent patellar dislocation. In patients without recurrent dislocation, the Kujala and subjective IKDC scores were assessed. Moreover, the tibial tubercle-trochlear groove (TT-TG), sulcus angle, patellar tilt, patellar shift, and lateral trochlea index (LTI) were measured. The patellar height was measured using the Caton-Dechamps (CDI), Blackburne-Peel (BPI), and Insall-Salvati index (ISI). The cohort was subclassified into two groups with and without recurrent dislocation. Differences between groups were analyzed with respect to the MRI parameters. RESULTS Forty percent had a pathological sulcus angle of > 145°, 7.2% had an LTI of < 11°, 47.3% had a patellar tilt of > 20°, and 36.4% had a TT-TG of ≥ 16 mm. Increased patellar height was observed in 34.5, 65.5, and 34.5% of the patients as per CDI, BPI, and ISI, respectively. Nineteen (34.5%) patients suffered from recurrent dislocation. Compared with patients without recurrent dislocation, those with recurrent dislocation had a significantly lower LTI (p = 0.0467). All other parameters were not significantly different between the groups. Risk factor analysis showed higher odds ratios (OR > 2), although not statistically significant, for MPFL rupture (OR 2.05 [95% confidence interval 0.38-11.03], LTI (6.6 [0.6-68.1]), TT-TG (2.9 [0.9-9.2]), and patellar height according to ISI (2.3 [0.7-7.5]) and CDI (2.3 [0.7-7.5])). Patients without recurrent dislocation had a Kujala score of 93.7 ± 12.1 (42-100) points and an IKDC score of 90.6 ± 11.7 (55.2-100) points. CONCLUSION Anatomical, MRI-based parameters should be considered before indicating medial reefing. A ruptured MPFL, an LTI < 11°, a TT-TG ≥ 16 mm, a patellar tilt > 20 mm, and an increased patellar height according to ISI and CDI were found to be associated, although not significantly, with a higher risk (OR > 2) of recurrent patellar dislocation after medial reefing. Thorough preoperative analysis is crucial to reduce the risk of recurrent dislocation in young patient cohorts. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Marc-Daniel Ahrend
- grid.10392.390000 0001 2190 1447Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany ,grid.418048.10000 0004 0618 0495AO Research Institute Davos, Davos, Switzerland
| | - Tobias Eisenmann
- grid.10392.390000 0001 2190 1447Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Moritz Herbst
- Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany.
| | - Boyko Gueorguiev
- grid.418048.10000 0004 0618 0495AO Research Institute Davos, Davos, Switzerland
| | - Gabriel Keller
- grid.411544.10000 0001 0196 8249Department of Diagnostic and Interventional Radiology, University Hospital Tuebingen, Tübingen, Germany
| | - Florian Schmidutz
- grid.10392.390000 0001 2190 1447Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Stefan Döbele
- grid.10392.390000 0001 2190 1447Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany
| | - Steffen Schröter
- grid.491771.dDepartment of Traumatology and Reconstructive Surgery, Diakonie Klinikum GmbH Jung-Stilling-Krankenhaus, Siegen, Germany
| | - Christoph Ihle
- grid.10392.390000 0001 2190 1447Department of Traumatology and Reconstructive Surgery, BG Trauma Center Tübingen, Eberhard Karls University Tübingen, Tübingen, Germany
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Zhao X, Zhang H. Biomechanical Comparison of 2 Patellar Fixation Techniques in Medial Patellofemoral Ligament Reconstruction: Transosseous Sutures vs Suture Anchors. Orthop J Sports Med 2021; 9:23259671211041404. [PMID: 34692878 PMCID: PMC8529315 DOI: 10.1177/23259671211041404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 06/08/2021] [Indexed: 11/16/2022] Open
Abstract
Background Multiple techniques for fixing a graft to the patella in medial patellofemoral ligament (MPFL) reconstruction have been described; however, no single technique has been shown to be superior to another. Purpose/Hypothesis The purpose of this study was to compare the biomechanical performance of 2 different patellar fixation techniques: suture anchor (SA) and transosseous suture (TS) fixation. The hypothesis was that there would be no significant differences between the groups in ultimate failure load, stiffness, or elongation. Study Design Controlled laboratory study. Methods In this study, a new TS technique was biomechanically compared with the SA technique for MPFL reconstruction using 24 fresh-frozen mature porcine patellae and porcine flexor profundus tendons. The specimens were randomized into 2 groups undergoing MPFL reconstruction using either the SA technique or the TS technique (n = 12 per group). Fixation with TS was completed using 3 No. 2 UltraBraid sutures and three 2-mm transosseous tunnels. SA reconstruction was completed using 2 parallel 3.5-mm titanium SAs with 2 No. 2 UltraBraid sutures. We preconditioned each graft using a force between 5 and 20 N before cyclic loading. Then, the specimens were biomechanically tested (1000 cycles; 5-100 N; 1 Hz) and loaded under tension at 200 mm/min until failure. The ultimate failure load, stiffness, elongation, and failure mode were recorded for each specimen. The Shapiro-Wilk test and independent t tests were used to assess the data. Results The TS technique resulted in a significantly higher mean failure load than did the SA technique (496.18 ± 93.15 vs 399.43 ± 105.35 N; P = .03). The TS technique resulted in less stiffness than did the SA technique (55.42 ± 7.92 vs 72.11 ± 10.64 N/mm; P < .01). There was no significant difference between the groups in elongation. None of the graft fixation/patellar complexes failed during cyclic testing in either group. During the load-to-failure test, the most common mode of failure in the SA group was an anchor being pulled out of the bone, whereas that in the TS group was rupture of the suture material. Conclusion MPFL reconstruction with 3 TSs provided a higher load to failure than did the commonly used fixation method involving SAs.
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Affiliation(s)
- Xin Zhao
- First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Hangzhou Zhang
- Department of Orthopedics; Joint Surgery and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, Liaoning Province, China
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The Comprehensive Aachen Knee Score: Development and validation of a new patient-reported outcome measure for patellofemoral pathologies. Knee 2021; 32:112-120. [PMID: 34461387 DOI: 10.1016/j.knee.2021.08.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 05/17/2021] [Accepted: 08/09/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND Existing patient-reported outcome measures (PROMs) that assess knee pain and symptoms show insufficient quality regarding their psychometric properties. We developed and validated a new PROM assessing knee pain and especially patellofemoral pathologies, the COMPrehensive AaChen Knee Score (COMPACK). METHODS We followed a three-phase process of development and validation. (1) Scale development: we conducted a systematic literature research to collect and analyse the most commonly used PROMs for knee and patellofemoral pathologies to identify appropriate items. (2) Pilot testing: we assessed the content validity of the COMPACK based on interviews with patients and health experts regarding relevance, comprehensibility and comprehensiveness of the used items. (3) Field testing: we used the COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) guidelines to evaluate the structural validity, internal consistency and test-retest reliability of the COMPACK. RESULTS The COMPACK scale showed good structural validity, with two subscales measuring pain intensity and frequency. Further, scores of the COMPACK correlated positively with those obtained from the International Knee Documentation Committee Subjective Knee Form (IKDC) (r = 0.64) and the 12-item Short Form Health Survey subscale of physical function: (r = 0.43). Both the total scale and the two subscales showed good internal consistency (Cronbach's α > 0.82) and good to excellent test-retest reliability (Cronbach's α > 0.82). CONCLUSIONS The final COMPACK score was shown to be a valid and reliable instrument and thus meets the most important psychometric quality criteria. In its development, we specifically focused on its content validity, structural validity and applicability.
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Assessment of knee flexor muscles strength in patients with patellar instability and its clinical implications for the non-surgical treatment of patients after first patellar dislocation - pilot study. BMC Musculoskelet Disord 2021; 22:740. [PMID: 34454460 PMCID: PMC8403423 DOI: 10.1186/s12891-021-04636-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Accepted: 08/17/2021] [Indexed: 11/10/2022] Open
Abstract
Background Biomechanical studies indicate that during outward rotation of the tibia and the valgus knee joint position, the patella is shifted in the lateral direction. After first-time patellar dislocation, the dynamic position of the femur in relation to the tibia plays an important role in joint stability, because the medial stabilizer of the patella (mostly the MPFL) is damaged or inefficient. The most important factor in controlling the rotational movement of the tibia in relation to the thigh are the hamstring muscles. The aim of the study therefore is to determine whether patients with patellar instability have a significant weakness in the knee flexor muscles, which can predispose to recurrent dislocations. This is an important consideration when planning the rehabilitation of patients with first-time patellar dislocation. Methods The study enrolled 33 patients with confirmed recurrent patellar dislocation, including six patients with bilateral involvement. In the study group, the hamstring muscles (both sides) were evaluated at velocities of 60 and 180 deg/s for the following parameters: peak torque, torque at 30 degrees of knee flexion, angle of peak torque and peak torque hamstring to quadriceps ratio (H/Q ratio). Results In the recurrent patellar dislocation group, a statistically significant weakness in knee flexors was observed for both angular velocities compared to age and gender normative data. No such relationship was observed in the control group of heathy subjects. In patients with one-sided dislocation, no differences were found in knee flexors peak torque, torque at 30 degrees of knee flexion, angle of peak torque or H/Q ratio between the healthy and affected limbs for either angular velocity. Conclusions In patients with recurrent patellar dislocation, knee flexors strength is decreased significantly in both the unaffected and affected limbs. This may indicate a constitutional weakening of these muscles which can predispose to recurrent dislocations. Trial registration The study was retrospectively registered on ClinicalTrials.gov (NCT04838158), date of registration; 22/03/2021.
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Smith TO, Choudhury A, Fletcher J, Choudhury Z, Mansfield M, Tennent D, Hing CB. Changes in pain catastrophization and neuropathic pain following operative stabilisation for patellofemoral instability: a prospective study with twelve month follow-up. INTERNATIONAL ORTHOPAEDICS 2021; 45:1745-1750. [PMID: 33877405 DOI: 10.1007/s00264-021-05046-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 04/12/2021] [Indexed: 01/26/2023]
Abstract
PURPOSE To determine the prevalence and change in neuropathic pain or pain catastrophizing before and 12 months following patellar stabilisation surgery for patellofemoral instability. METHODS We conducted a prospective clinical audit within a UK NHS orthopaedic surgical centre. Data from 84 patients with patellofemoral instability requiring stabilisation were analysed. Fifty percent (42/84) underwent MPFL reconstruction alone, and 16% (13/84) had both trochleoplasty and MPFL reconstruction. Neuropathic pain was assessed using painDETECT score. Pain catastrophizing was assessed using the Pain Catastrophizing Score. The Norwich Patellar Instability (NPI) Score and Kujala Patellofemoral Disorder Score were also routinely collected pre-operatively and one year post-operatively. RESULTS At 12 months post-operatively there was a statistically significant reduction in mean Pain Catastrophizing Scores (18.9-15.7; p < 0.02), but no change in mean painDETECT scores (7.3-7.8; p = 0.72). There was a statistically significant improvement in NPI scores (90.2-61.9; p < 0.01) and Kujala Patellofemoral Disorder Scores (48.7-58.1; p = 0.01). The prevalence of pain catastrophizing decreased from 31% pre-operatively to 24% post-operatively, whereas the prevalence of neuropathic pain remained consisted (10-11%). CONCLUSIONS Neuropathic pain and catastrophizing symptoms are not commonly reported and did not significantly change following patellofemoral stabilisation surgery. Whilst low, for those affected, there remains a need to intervene to improve outcomes following PFI surgery.
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Affiliation(s)
- T O Smith
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK. .,Faculty of Medicine and Health Sciences, University of East Anglia, Norwich, UK.
| | - A Choudhury
- St George's University Hospitals NHS Foundation Trust, London, UK.,St George's University London, London, UK
| | - J Fletcher
- St George's University London, London, UK
| | - Z Choudhury
- London Business School, Research Laboratory, London, UK
| | - M Mansfield
- Pain Research Cluster; Ageing, Acute and Long Term Conditions Research Group, Institute of Health and Social Care, London South Bank University, London, UK
| | - D Tennent
- St George's University Hospitals NHS Foundation Trust, London, UK
| | - C B Hing
- St George's University Hospitals NHS Foundation Trust, London, UK
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12
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Towoezim TH, Akloa KEK, Kombate NK, Bakriga B, Dellanh YY, Abalo GA. [Management of objective patellar instabilities at the University Hospital Center Sylvanus Olympio of Lome, Togo]. Pan Afr Med J 2021; 38:371. [PMID: 34367450 PMCID: PMC8308921 DOI: 10.11604/pamj.2021.38.371.22956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 04/08/2021] [Indexed: 11/11/2022] Open
Abstract
Introduction patellar instability is a rare multifactorial condition whose treatment is complex. The purpose of this study was to describe cases of patellar instabilities and then to assess treatment outcomes in low-income countries. Methods the study was conducted from March 2013 to February 2018. Eight patients aged >15 years and who had undergone surgery for objective patellar instability were enrolled. Before and after surgery knee function was assessed using IKDC score. Results the average age at surgery was 28.5 years and female sex was predominant (6 cases). Trochlear dysplasia was the main etiological factor (7 patients). In four cases dysplasia was related to patellar height (mean Caton index: 1.4). In five cases, section of lateral patellar retinaculum associated with TTA transposition and Insall's plasty was performed. Functional outcome was satisfactory, with a mean IKDC score of 91.3%. Conclusion patellar instabilities are rare. Management is delayed in our developing countries, but outcomes are good when protocols are adapted.
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Affiliation(s)
- Tchaa Hodabalo Towoezim
- Service de Traumatologie-Orthopédie du Centre Hospitalier Universitaire (CHU) de Kara, Faculté des Sciences de la Santé de l´Université de Kara, Kara, Togo
| | - Kolima Ehlissou Komlavi Akloa
- Service de Traumatologie-Orthopédie du Centre Hospitalier Universitaire (CHU) Sylvanus Olympio de Lomé, Faculté des Sciences de la Santé de l´Université de Lomé, Lomé, Togo
| | - Noufanague Kanfitine Kombate
- Service de Traumatologie-Orthopédie de l´Hôpital Saint Jean de Dieu d´Afagnan, Faculté des Sciences de la Santé de l´Université de Lomé, Lomé, Togo
| | - Batarabadja Bakriga
- Service de Traumatologie-Orthopédie du Centre Hospitalier Universitaire (CHU) Sylvanus Olympio de Lomé, Faculté des Sciences de la Santé de l´Université de Lomé, Lomé, Togo
| | - Yaovi Yanick Dellanh
- Service de Traumatologie-Orthopédie du Centre Hospitalier Universitaire (CHU) Sylvanus Olympio de Lomé, Faculté des Sciences de la Santé de l´Université de Lomé, Lomé, Togo
| | - Grégoire Anani Abalo
- Service de Traumatologie-Orthopédie du Centre Hospitalier Universitaire (CHU) Sylvanus Olympio de Lomé, Faculté des Sciences de la Santé de l´Université de Lomé, Lomé, Togo
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Tian G, Yang G, Zuo L, Li F, Wang F. Conservative versus repair of medial patellofemoral ligament for the treatment of patients with acute primary patellar dislocations: A systematic review and meta-analysis. J Orthop Surg (Hong Kong) 2021; 28:2309499020932375. [PMID: 32552381 DOI: 10.1177/2309499020932375] [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: 11/17/2022] Open
Abstract
PURPOSE The aim of this study was to perform a meta-analysis to compare the effects of repair of medial patellofemoral ligament (MPFL) and conservative treatment in patients with acute primary patellar dislocation (PPD). METHOD The databases we used to search the studies included MEDILINE, EMBASE, and Cochrane registry of controlled clinical trials. Five randomized controlled studies comparing the effects of MPFL repair versus conservative treatment with 300 acute PPD patients were included in the present meta-analysis. Primary outcome was redislocation rate and secondary outcomes included Kujala score, percentage of excellent or good subjective opinion, Tegner activity score, and knee injury and osteoarthritis outcome score (KOOS; pain, symptoms, and activities of daily living). RESULTS The outcome of the Kujala score was statistically significant between the two treatments and indicated that MPFL repair had a higher Kujala score than conservative treatment in patients with acute PPD. There was no significant difference between the two treatments regarding the redislocation rate (p = 0.32), percentage of excellent or good subjective opinion (p = 0.15), Tegner activity score (p = 0.24), and KOOS (p > 0.05). CONCLUSIONS Based on the available data, MPFL repair did not reduce the risk of redislocation nor did it produce any significantly better outcome based on the clinical manifestations, including anterior knee pain and knee activities. Only the Kujala score was improved by MPFL repair compared with conservative treatment.
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Affiliation(s)
- Gengshuang Tian
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Guangmin Yang
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Lixiong Zuo
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Faquan Li
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Fei Wang
- Department of Joint Surgery, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
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Severino NR, Severino FR, de Camargo OPA, Guglielmetti LGB, de Oliveira VM, Cury RDPL. Update on Patellar Instability. Rev Bras Ortop 2020; 56:147-153. [PMID: 33935309 PMCID: PMC8075655 DOI: 10.1055/s-0040-1713389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Accepted: 03/17/2020] [Indexed: 11/08/2022] Open
Abstract
Patellar instability is a multifactorial clinical condition that affects a significant number of patients and occurs due to morphological variations of the joint and patellofemoral alignment. The present literature review study aimed to identify and summarize current concepts on patellar instability, in relation to associated risk factors, diagnostic criteria, and the benefits and risks of conservative and surgical treatments. For this purpose, a search was conducted in the following electronic databases: MEDLINE (via Pubmed), LILACS and Cochrane Library. It is concluded that the accurate diagnosis depends on the detailed clinical evaluation, including the history and possible individual risk factors, as well as imaging exams. The initial treatment of patellar instability is still controversial, and requires the combination of conservative and surgical interventions, taking into consideration both soft tissues and bone structures, the latter being the most common reason for choosing surgical treatment, especially lateral patellar instability.
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Affiliation(s)
- Nilson Roberto Severino
- Grupo de Joelho, Departamento de Ortopedia e Traumatologia, Faculdade de Ciências Médicas, Irmandade da Santa Casa de Misericórdia de São Paulo, Santa Casa de São Paulo, São Paulo, Brasil
| | - Fabrício Roberto Severino
- Grupo de Joelho, Departamento de Ortopedia e Traumatologia, Faculdade de Ciências Médicas, Irmandade da Santa Casa de Misericórdia de São Paulo, Santa Casa de São Paulo, São Paulo, Brasil
| | - Osmar Pedro Arbix de Camargo
- Grupo de Joelho, Departamento de Ortopedia e Traumatologia, Faculdade de Ciências Médicas, Irmandade da Santa Casa de Misericórdia de São Paulo, Santa Casa de São Paulo, São Paulo, Brasil
| | - Luiz Gabriel Betoni Guglielmetti
- Grupo de Joelho, Departamento de Ortopedia e Traumatologia, Faculdade de Ciências Médicas, Irmandade da Santa Casa de Misericórdia de São Paulo, Santa Casa de São Paulo, São Paulo, Brasil
| | - Victor Marques de Oliveira
- Grupo de Joelho, Departamento de Ortopedia e Traumatologia, Faculdade de Ciências Médicas, Irmandade da Santa Casa de Misericórdia de São Paulo, Santa Casa de São Paulo, São Paulo, Brasil
| | - Ricardo de Paula Leite Cury
- Grupo de Joelho, Departamento de Ortopedia e Traumatologia, Faculdade de Ciências Médicas, Irmandade da Santa Casa de Misericórdia de São Paulo, Santa Casa de São Paulo, São Paulo, Brasil
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Zhang K, Jiang H, Li J, Fu W. Comparison Between Surgical and Nonsurgical Treatment for Primary Patellar Dislocations in Adolescents: A Systematic Review and Meta-analysis of Comparative Studies. Orthop J Sports Med 2020; 8:2325967120946446. [PMID: 33015209 PMCID: PMC7513014 DOI: 10.1177/2325967120946446] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Background: Whether surgical or nonsurgical management is more appropriate for primary
patellar dislocations (PPDs) in adolescents (younger than 18 years) remains
controversial. Purpose: To compare the clinical outcomes of surgical versus nonsurgical treatment for
adolescents and children with PPDs. Study Design: Systematic review; Level of evidence, 3. Methods: There were 2 reviewers who independently searched the PubMed, Embase, Ovid,
and Cochrane databases for English-language studies of randomized controlled
trials (RCTs), quasi-RCTs, and observational studies comparing surgical with
nonsurgical treatment for PPDs. The primary outcomes were redislocations,
the Kujala score, and the Knee injury and Osteoarthritis Outcome Score
(KOOS), and the secondary outcome was subsequent surgery. Results: A total of 6 studies were included in our systematic review and
meta-analysis. Among patients younger than 18 years, surgery was associated
with a lower redislocation rate compared with nonsurgical treatment within 5
years of treatment (risk ratio [RR], 0.58 [95% CI, 0.37-0.91];
P = .02; I2 = 47%) but not beyond 5 years (RR, 0.80 [95% CI, 0.59-1.07];
P = .14; I2 = 34%). However, surgery resulted in worse Kujala and KOOS
scores compared with nonsurgical treatment. Yet, the treatment difference
between the 2 groups tended to decrease over time. Conclusion: The available evidence suggests that for adolescents with PPDs, surgery was
superior to nonsurgical treatment in the short term to reduce the
redislocation rate but resulted in poorer outcomes of knee function based on
the Kujala and KOOS scores. However, the superiority of either surgical or
nonsurgical treatment in adolescents did not appear to persist in the long
term.
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Affiliation(s)
- Kaibo Zhang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Hua Jiang
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China.,Key Laboratory of Rehabilitation Medicine in Sichuan Province, West China Hospital, Sichuan University, Chengdu, China
| | - Jian Li
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
| | - Weili Fu
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, Chengdu, China
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Instabile Patella des Erwachsenen. ARTHROSKOPIE 2020. [DOI: 10.1007/s00142-020-00405-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Xing X, Shi H, Feng S. Does surgical treatment produce better outcomes than conservative treatment for acute primary patellar dislocations? A meta-analysis of 10 randomized controlled trials. J Orthop Surg Res 2020; 15:118. [PMID: 32209111 PMCID: PMC7093955 DOI: 10.1186/s13018-020-01634-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 03/12/2020] [Indexed: 11/20/2022] Open
Abstract
Purpose The objective of this study was to conduct the latest meta-analysis of randomized controlled trials (RCTs) that compare clinical results between surgery and conservative therapy of acute primary patellar dislocation (APPD), focusing on medial patellofemoral ligament (MPFL) reconstruction. Methods We performed a literature search in Embase, The Cochrane Library, PubMed, and Medline to identify RCTs comparing APPD surgical treatment with conservative treatment from the establishment of each database to January 2019. The methodological quality of each RCT was assessed independently by the two authors through the Cochrane Collaboration’s “Risk of Bias” tool. Mean differences of continuous variables and risk ratios of dichotomous variables were computed for the pooled data analyses. The I2 statistic and the χ2 test were used to evaluate heterogeneity, with the significance level set at I2 > 50% or P < 0.10. Results Ten RCTs with a sum of 569 patients (297 receiving surgical treatment and 263 receiving conservative treatment) met the inclusion criteria for meta-analysis. Pooled data analysis showed no statistical difference in the field of subluxation rate, Kujala score, patient satisfaction, and frequency of reoperation between the two groups. Tegner activity score and recurrent dislocation rate in the conservative group were significantly higher than those in the surgically treated group. Conclusions Conservative treatment may produce better outcomes than surgery for APPD in consideration of Tegner activity score. However, in view of limited research available, the interpretation of the discoveries should be cautious. More convincing evidence is required to confirm the effect of MPFL reconstruction.
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Affiliation(s)
- Xuewu Xing
- Department of Orthopaedics, Tianjin First Central Hospital, First Central Clinical College of Tianjin Medical University, Tianjin, China
| | - Hongyu Shi
- Department of Orthopaedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Shiqing Feng
- Department of Orthopaedics, Tianjin Medical University General Hospital, Tianjin, China.
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18
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Fu Z, Zhu Z, Chen H, Zhang S. Surgical treatment is better than non-surgical treatment for primary patellar dislocation: a meta-analysis of randomized controlled trials. Arch Orthop Trauma Surg 2020; 140:219-229. [PMID: 31728610 DOI: 10.1007/s00402-019-03308-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Indexed: 11/24/2022]
Abstract
BACKGROUND At present, the best treatment for primary patellar dislocation (PPD) has not been unified. Moreover, meta-analyses comparing the non-surgical and surgical treatments of PPD are lacking. Thus, we aimed to compare the clinical efficacy of surgical or non-surgical treatment of PPD. METHODS Randomized controlled studies of surgical and non-surgical treatments of PPD from 1966 to 2018 were retrieved from the following databases: PubMed, EMBASE, Cochrane Library, Wanfang Database, China Knowledge Network, Google Scholar, and Weipu Database. We screened for literature that met the inclusion criteria and extracted useful data for our meta-analysis. RESULTS Nine studies, involving 492 patients, met the inclusion criteria and were analyzed in this study. The recurrence rate of patellar dislocation in the surgical group was lower than that in the non-surgical group (P = 0.04]). Subgroup analysis according to the follow-up time showed that the Kujala score (P < 0.001) and lower recurrence rate of dislocation (P = 0.05) than the non-surgical group in the short term. Subgroup analysis according to surgical year showed that the surgical group get higher Kujala score (P < 0.001) and lower recurrence rate of dislocation (P = 0.01) than the non-surgical group in recent years. CONCLUSION Surgical treatment can provide better clinical results in a short period of time, and patients may achieve good results within 10 years owing to the advances in surgical techniques and instruments. Thus, we recommend surgical treatment as the preferred treatment for primary patellar dislocation.
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Affiliation(s)
- Zhengdao Fu
- Department of Orthopedic Surgery, Hangzhou First People's Hospital, Hangzhou, 310002, China
| | - Zhiqiang Zhu
- Department of Orthopedic Surgery, Hangzhou First People's Hospital, Hangzhou, 310002, China
| | - Haitao Chen
- Department of Orthopedic Surgery, Hangzhou First People's Hospital, Hangzhou, 310002, China
| | - Shiqin Zhang
- Department of Orthopedic Surgery, Hangzhou First People's Hospital, Hangzhou, 310002, China.
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Uppstrom TJ, Price M, Black S, Gausden E, Haskel J, Green DW. Medial patellofemoral ligament (MPFL) reconstruction technique using an epiphyseal femoral socket with fluoroscopic guidance helps avoid physeal injury in skeletally immature patients. Knee Surg Sports Traumatol Arthrosc 2019; 27:3536-3542. [PMID: 30852626 DOI: 10.1007/s00167-019-05412-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 02/13/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE The purpose of this study was to assess the physeal safety associated with the use of an epiphyseal femoral socket for paediatric medial patellofemoral ligament (MPFL) reconstruction. METHODS Fifty-four knees in 49 skeletally immature patients underwent physeal-sparing MPFL reconstruction performed by 1 surgeon at a tertiary care academic medical centre from 2007 to 2016. A femoral socket distal to the femoral physis was used for graft fixation in all the patients. To assess physeal safety, all included patients either had post-operative MRIs of the operative knee or standing hip-to-ankle radiographs. Physeal safety was assessed on MRI, and the distance between the femoral socket relative to the physis was measured at both the aperture and the end of the socket. Development of lower limb angular deformities and/or limb length discrepancy (LLD) was evaluated using post-operative standing hip-to-ankle radiographs, patient records, and clinical assessments. RESULTS The mean age at time of surgery was 13.3 ± 1.6 years. The median length of radiographic follow-up was 2.2 years (range 1.0-5.7 years). At most recent clinical follow-up, five patients (9.3%) had recurrent patellar instability, with three patients (5.6%) undergoing subsequent tibial tubercle osteotomy or revision MPFL reconstruction. There was no statistically significant difference in leg length between operated and non-operated extremities (n.s.). There was no statistically significant difference between non-operated and operated mMPTA (n.s.) and mLDFA (n.s.) measurements. On post-operative MRI, there was no evidence of physeal arrest. The median distance from the physis to the socket at the aperture and distal end of the femoral socket were 5.9 mm (range 1.9-12) and 7.1 mm (1.3-12.4), respectively. CONCLUSION These results demonstrate that with fluoroscopic guidance, placing the femoral socket distal to the distal femoral physis is an effective method for avoiding physeal injury and subsequent growth disturbances in children with patellar instability. Clinically, this information is essential in optimal surgical management of these patients, as this technique allows for femoral fixation of the MPFL reconstruction graft within the epiphysis while also preserving normal growth. LEVEL OF EVIDENCE Level IV-case series.
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Affiliation(s)
- Tyler J Uppstrom
- Weill Cornell Medical College, 1300 York Avenue, New York, NY, 10021, USA.,Hospital for Special Surgery, 525 E 70th Street, New York, NY, 10021, USA
| | - Meghan Price
- Hospital for Special Surgery, 525 E 70th Street, New York, NY, 10021, USA
| | - Sheena Black
- Hospital for Special Surgery, 525 E 70th Street, New York, NY, 10021, USA
| | - Elizabeth Gausden
- Hospital for Special Surgery, 525 E 70th Street, New York, NY, 10021, USA
| | - Jonathan Haskel
- Robert Wood Johnson Medical School, 675 Hoes Lane West, Piscataway, NJ, 08854, USA
| | - Daniel W Green
- Hospital for Special Surgery, 525 E 70th Street, New York, NY, 10021, USA.
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Pagliazzi G, Napoli F, Previtali D, Filardo G, Zaffagnini S, Candrian C. A Meta-analysis of Surgical Versus Nonsurgical Treatment of Primary Patella Dislocation. Arthroscopy 2019; 35:2469-2481. [PMID: 31395189 DOI: 10.1016/j.arthro.2019.03.047] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 02/17/2019] [Accepted: 03/04/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE To compare outcomes after surgery versus nonsurgical treatment in the management of primary lateral patellar dislocation (LPD) through a meta-analysis of randomized controlled trials (RCTs) in terms of redislocation rate and clinical outcome, investigating both short-term (<6 years) functional recovery and overall benefit over time (>6 years). METHODS A systematic search of the literature was performed in November 2018. Risk of bias and quality of evidence were evaluated according to the Cochrane guidelines. RCTs investigating differences between surgery and nonsurgical treatment in primary LPD were included. The outcomes evaluated were redislocation rate, reinterventions, and Kujala score at short-, mid-, and long-term follow-up, with subanalyses for the pediatric population. RESULTS We included 510 patients from 10 RCTs in the meta-analysis. Redislocation rate was 0.40 (0.25 to 0.66; P < .001) and 0.58 (0.29 to 1.15; P = .12) at the short- and mid-term follow-ups, respectively, and the risk ratio for the need for further operations at 6 to 9 months' follow-up was 0.14 (0.02 to 1.03; P = .05), all favoring surgery. Concerning the Kujala score, an advantage of the surgical approach of 10.2 points (1.6 to 18.7; P = .02) at short-term follow-up was seen, whereas long-term follow-up results were similar between the groups. The subanalysis of the pediatric population at heterogeneous follow-up confirmed a lower risk of recurrence in surgery, with a risk ratio of 0.60 (0.26 to 1.37; P = .22), although not significant. CONCLUSION The literature documents a low number of high-level trials. The meta-analysis of RCTs underlined that the redislocation rate is higher with the nonsurgical approach compared with the surgical one. Moreover, when looking at the clinical outcome, more favorable findings were found with the surgical approach up to 6 years, whereas results seems to be similar at a longer follow-up after either surgical or nonsurgical treatment of primary LPD. LEVEL OF EVIDENCE II, meta-analysis of level I and level II randomized clinical trials.
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Affiliation(s)
- Gherardo Pagliazzi
- Orthopaedic and Traumatology Unit, Ospedale Regionale di Lugano, EOC, Lugano, Switzerland
| | - Francesca Napoli
- Orthopaedic and Traumatology Unit, Ospedale Regionale di Lugano, EOC, Lugano, Switzerland
| | - Davide Previtali
- Orthopaedic and Traumatology Unit, Ospedale Regionale di Lugano, EOC, Lugano, Switzerland.
| | - Giuseppe Filardo
- Orthopaedic and Traumatology Unit, Ospedale Regionale di Lugano, EOC, Lugano, Switzerland; Applied and Translational Research Center, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Stefano Zaffagnini
- 2nd Orthopaedic and Traumatologic Clinic, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Christian Candrian
- Orthopaedic and Traumatology Unit, Ospedale Regionale di Lugano, EOC, Lugano, Switzerland
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Hilber F, Pfeifer C, Memmel C, Zellner J, Angele P, Nerlich M, Kerschbaum M, Popp D, Baumann F, Krutsch W. Early functional rehabilitation after patellar dislocation-What procedures are daily routine in orthopedic surgery? Injury 2019; 50:752-757. [PMID: 30717889 DOI: 10.1016/j.injury.2018.10.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Accepted: 10/17/2018] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Patellar dislocation and rupture of the medial patellofemoral ligament (MPFL) are frequently seen in daily orthopedic practice. Besides initial non-surgical treatment, surgery and subsequent rehabilitation are crucial for restoring stability in the femoropatellar joint. This study investigated current rehabilitation strategies after patellar dislocation because knowledge on this topic has been severely limited so far. MATERIALS AND METHODS The current rehabilitation protocols of 42 orthopedic and trauma surgical institutions were analyzed regarding their recommendations on weight bearing, range of motion (ROM), and use of movement devices and orthosis. All protocols for conservative treatment and postoperative rehabilitation after MPFL reconstruction were compared. Descriptive and statistical analyses were carried out when appropriate. RESULTS The different rehabilitation strategies for conservative and surgical treatment after patellar dislocation showed a tendency towards earlier functional rehabilitation after surgical MPFL reconstruction than after conservative treatment. Both surgical and conservative treatment involved initial restrictions in weight bearing, ROM, and use of movement devices and orthosis at the beginning of rehabilitation. The rehab protocols showed a significant earlier full weight bearing after surgical MPFL reconstruction (p > 0.001). Due to the presence of other parameters for early functional treatment, the absence of an indication for using orthosis (surgical: 44%, conservative: 33%; p = 0.515) or start of unlimited ROM of the knee (surgical: 4.9 weeks, conservative: 5.7 weeks; p = 0.076) showed by trend an earlier functional strategy after MPFL reconstruction than after conservative therapy. CONCLUSIONS Both conservative and surgical treatment after patellar dislocation showed restrictions in the early phase of the rehabilitation. Earlier functional therapy was more common after MPFL reconstruction than after conservative treatment. Further clinical and biomechanical studies on rehabilitation strategies after patellar dislocation are needed to improve patient care und individualized therapy.
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Affiliation(s)
- Franz Hilber
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany.
| | - Christian Pfeifer
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Clemens Memmel
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Johannes Zellner
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Peter Angele
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Michael Nerlich
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Maximilian Kerschbaum
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Daniel Popp
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Florian Baumann
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Werner Krutsch
- Department of Trauma Surgery, University Medical Center Regensburg, Regensburg, Germany
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Ruzzini L, Donati F, Russo R, Costici PF. Modified Roux-Goldthwait Procedure for Management of Patellar Dislocation in Skeletally Immature Patients with Down Syndrome. Indian J Orthop 2019; 53:122-127. [PMID: 30905992 PMCID: PMC6394190 DOI: 10.4103/ortho.ijortho_505_17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Patellar instability is a common problem in Down syndrome patients since their childhood. Several treatment have been proposed, but relapses are frequent and not all surgeries are suitable for growing patients. The aim of the present study is to evaluate the clinical and radiographic outcomes of a modified Roux-Goldthwait technique, for the management of patellar instability in children with Down syndrome at minimum 5-year followup. MATERIALS AND METHODS 19 patients (23 knees) affected by Down syndrome surgically treated for patellar dislocation, between 2000 and 2012 were included in this study. The mean age of patients was 9.5 years (range 3.7 - 15 years) and had a Dugdale Grade III, IV, and V patellar dislocation. Trochlear groove dysplasia was present in 15 patients. Each patient was clinically evaluated considering relapse rate, pre- and postoperative range of motion (ROM), Kujala score, and modified Lysholm score. Radiographic examination was performed on standard X-ray considering patellar height, trochlear angle, and patellofemoral congruence angle. RESULTS The mean followup was 134 months (range 62-206 months). No case of relapse of dislocation was registered with an improved ROM (significant for knee extension, P < 0.05). The Kujala score showed significant improvement from a mean preoperative value of 39 ± 6.3 to a mean postoperative value of 92.7 ± 3.4 (P < 0.05) at final followup such as the modified Lysholm score (from mean preoperative 55.6 ± 6.3 to mean postoperative of 94.2 ± 2.6). Radiographs performed at latest followup showed a tendency to normalization of all the parameters considered, with a restored patellofemoral congruence and trochlear groove shape and without signs of osteoarthritis. CONCLUSION The present study showed that the Roux-Goldthwait procedure is a valid surgical option for the treatment of patellar dislocation in children with Down syndrome.
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Affiliation(s)
- Laura Ruzzini
- Department of Orthopaedics, Children's Hospital “Bambino Gesù,” Rome, Italy
| | - Fabrizio Donati
- Department of Orthopaedics, Children's Hospital “Bambino Gesù,” Rome, Italy,Address for correspondence: Dr. Fabrizio Donati, Department of Orthopaedics, Children's Hospital “Bambino Gesù,” Via Della Torre di Palidoro, Rome, Italy. E-mail:
| | - Rosa Russo
- Department of Orthopaedics, Children's Hospital “Bambino Gesù,” Rome, Italy
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Surgical medial patellofemoral ligament reconstruction versus non-surgical treatment of acute primary patellar dislocation: a prospective controlled trial. INTERNATIONAL ORTHOPAEDICS 2018; 43:1495-1501. [DOI: 10.1007/s00264-018-4243-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 11/14/2018] [Indexed: 12/28/2022]
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24
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Becher C, Attal R, Balcarek P, Dirisamer F, Liebensteiner M, Pagenstert G, Schöttle P, Seitlinger G, Wagner D. Successful adaption of the Banff Patella Instability Instrument (BPII) 2.0 into German. Knee Surg Sports Traumatol Arthrosc 2018; 26:2679-2684. [PMID: 28785790 DOI: 10.1007/s00167-017-4673-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 08/02/2017] [Indexed: 11/24/2022]
Abstract
PURPOSE The aim of this study was to adapt, translate, and validate the Banff Patella Instability Instrument (BPII) 2.0 into German, enabling its use by German-speaking professionals for the evaluation of patients who present with patellofemoral instability. METHODS Forward and backward translation was performed according to international recommendations. The final German version of the BPII 2.0 was investigated in patients with confirmed diagnoses of recurrent patellofemoral instability in Germany, Austria, and Switzerland. All patients received two packages of questionnaires, each containing the BPII 2.0, Kujala scoring questionnaire, Norwich Patella Instability scoring questionnaire, Short Form-36 (SF-36), and a visual analogue scale (VAS)-scale for pain and disability. The first and second packages of questionnaires were to be completed 7 days apart. The following parameters were assessed: internal consistency, test-retest reliability, floor and ceiling effects, and construct validity. RESULTS The study population consisted of 64 patients (24 males and 40 females). The average age of the patients was 22 ± 6 years. The internal consistency (Cronbach's alpha) was excellent at both time points (0.93 and 0.95), and the test-retest reliability (ICC) was good (0.89). There were no floor or ceiling effects. There were statistically significant correlations between the BPII 2.0 and all other outcome measures apart from SF-36 mental health. CONCLUSION The BPII 2.0 was successfully adapted into German. It is a reliable and valid instrument for evaluation of German-speaking patients who present with patellofemoral instability. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Christoph Becher
- HKF - International Center for Hip-, Knee- and Foot Surgery, ATOS Clinic Heidelberg, Bismarckstr. 9-15, 69115, Heidelberg, Germany. .,Orthopädische Klinik der Medizinischen Hochschule Hannover (MHH) im Annastift, Anna-von-Borries-Str. 1-7, 30625, Hannover, Germany.
| | - René Attal
- Klinik für Unfallchirurgie, Landeskrankenhaus Feldkirch, Carinagasse 47, 6807, Feldkirch, Austria
| | - Peter Balcarek
- ARCUS Kliniken und Praxen-Sportklinik, Rastatter Str. 17-19, 75179, Pforzheim, Germany
| | - Florian Dirisamer
- Orthopädie and Sportchirurgie, Karl-Leitl-Str. 1, 4048, Puchenau, Austria
| | | | - Geert Pagenstert
- Orthopädie, Universitätsspital Basel, Klinikum 1, Spitalstrasse 21, 4031, Basel, Switzerland
| | - Philip Schöttle
- Knee and Hip Institute Munich GbR, Frauenplatz 7, 80331, Munich, Germany
| | - Gerd Seitlinger
- Krankenhaus Oberndorf, Paracelsusstraße 37, 5110, Oberndorf bei Salzburg, Austria
| | - Daniel Wagner
- Hessingpark-Clinic GmbH, Hessingstraße 17, 86199, Augsburg, Germany
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Li L, Wang H, He Y, Si Y, Zhou H, Wang X. Treatment of recurrent patellar dislocation via knee arthroscopy combined with C-arm fluoroscopy and reconstruction of the medial patellofemoral ligament. Exp Ther Med 2018; 15:5051-5057. [PMID: 29805530 PMCID: PMC5958637 DOI: 10.3892/etm.2018.6055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 02/16/2018] [Indexed: 01/09/2023] Open
Abstract
Recurrent patellar dislocations were treated via knee arthroscopy combined with C-arm fluoroscopy, and reconstruction of the medial patellofemoral ligaments. Between October 2013 and March 2017, 52 cases of recurrent patellar dislocation [27 males and 25 females; age, 16-47 years (mean, 21.90 years)] were treated. Arthroscopic exploration was performed and patellofemoral joint cartilage injuries were repaired. It was subsequently determined whether it was necessary to release the lateral patellofemoral support belt. Pre-operative measurements were used to decide whether tibial tubercle osteotomy was required. Medial patellofemoral ligaments were reconstructed using autologous semitendinosus tendons. Smith and Nephew model 3.5 line anchors were used to double-anchor the medial patellofemoral margin. On the femoral side, the medial patellofemoral ligament was fixed using 7-cm, absorbable, interfacial compression screws. All cases were followed for 1-40 months (average, 21 months). The Q angle, tibial tuberosity trochlear groove distance, Insall-Salvati index, patellofemoral angle, lateral patellofemoral angle and lateral shift were evaluated on X-Ray images using the picture archiving and communication system. Subjective International Knee Documentation Committee (IKDC) knee joint functional scores and Lysholm scores were recorded. Post-operative fear was absent, and no patellar re-dislocation or re-fracture was noted during follow-up. At the end of follow-up, the patellofemoral angle (0.22±4.23°), lateral patellofemoral angle (3.44±1.30°), and lateral shift (0.36+0.14°) differed significantly from the pre-operative values (all, P<0.05). Furthermore, IKDC and Lysholm scores (87.84+3.74 and 87.48+3.35, respectively) differed significantly from the pre-operative values (both, P<0.05). These findings suggest that, in the short term, recurrent patellar dislocation treatment via knee arthroscopy combined with C-arm fluoroscopy and reconstruction of the medial patellofemoral ligament was effective.
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Affiliation(s)
- Li Li
- The Third Department of Orthopedics, Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi, Xinjiang 830002, P.R. China
| | - Hongbo Wang
- The Third Department of Orthopedics, Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi, Xinjiang 830002, P.R. China
| | - Yun He
- The Third Department of Orthopedics, Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi, Xinjiang 830002, P.R. China
| | - Yu Si
- The Third Department of Orthopedics, Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi, Xinjiang 830002, P.R. China
| | - Hongyu Zhou
- The Third Department of Orthopedics, Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi, Xinjiang 830002, P.R. China
| | - Xin Wang
- The Third Department of Orthopedics, Hospital of Traditional Chinese Medicine of Xinjiang Medical University, Urumqi, Xinjiang 830002, P.R. China
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26
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Becher C, Attal R, Balcarek P, Dirisamer F, Liebensteiner M, Pagenstert G, Schöttle P, Seitlinger G, Wagner D. Validierung der deutschsprachigen Version des Banff Patellofemorales Instabilitäts-Instrument 2.0. ARTHROSKOPIE 2018. [DOI: 10.1007/s00142-018-0191-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Abstract
Trochleoplasty is a very effective procedure for correcting trochlear dysplasia and addressing instability of the patella. With an increasing knowledge about the anatomy and biomechanics of the anterior distal femur, a wider array of surgical techniques may be applied to address specific conditions. Patients must be carefully selected to undergo trochleoplasty by use of a thorough history and physical examination as well as basic and advanced imaging. The presence of a "J sign" on physical examination, a history of recurrent instability, patella alta, trochlear dysplasia, and elevated tibial tubercle to trochlear groove are signs and symptoms for which the patient should be evaluated. We attempt to elucidate when trochleoplasty is indicated by means of addressing all aspects of evaluation.
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Yanasse RH, Aravechia G, Ramos TR, Lucena Augusto Lima LG, Zanutto de Oliveira Medeiros D, Ferreira Laraya MH, Mizobuchi RR. Surgical Technique: Anatomic Medial Patellofemoral Ligament Retensioning Repair. Arthrosc Tech 2018; 7:e569-e574. [PMID: 29868436 PMCID: PMC5984444 DOI: 10.1016/j.eats.2018.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Accepted: 02/01/2018] [Indexed: 02/03/2023] Open
Abstract
The medial patellofemoral ligament (MPFL) and the MPFL/vastus medialis obliquus complex are essential for patellar stability. Insufficiency of the MPFL can lead to altered biomechanics and patellofemoral joint contact pressure, high recurrence rate, osteochondral lesions, compromised knee function, and patellofemoral osteoarthritis. Most frequently surgical reconstruction of the MPFL is performed to address patellar instability; however, open physis and donor site morbidity can be a concern. This Technical Note presents a surgical technique to identify the insufficient MPFL and describes in detail an anatomical retensioning repair of the MPFL to restore patellar stability.
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Affiliation(s)
- Ricardo Hideki Yanasse
- Address correspondence to Ricardo Hideki Yanasse, M.D., Departamento de Ortopedia-FAMEMA Rua Monte Carmelo, 800, Bairro Fragata, CEP 17519-030, Marília, São Paulo, Brazil.
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29
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Zimmerer A, Sobau C, Balcarek P. Recent developments in evaluation and treatment of lateral patellar instability. J Exp Orthop 2018; 5:3. [PMID: 29322270 PMCID: PMC5762615 DOI: 10.1186/s40634-017-0119-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 12/22/2017] [Indexed: 01/25/2023] Open
Abstract
Recent years have been characterized by an ongoing increase in knowledge about the different conditions associated with lateral patellar instability. This increase in knowledge provides differentiated approaches to the various pathologies of the patellofemoral joint. Though current guidelines consider medial patellofemoral ligament (MPFL) reconstruction the basic treatment for the unstable patella, medial soft tissue-stabilizing procedures should not be interpreted as stand-alone procedures in every case. The influence of different anatomical factors leading to patellar instability, as well as their impact on clinical outcome measures, is becoming increasingly apparent and deserves further attention. Therefore, the purpose of this review was to summarize recent developments in lateral patellar instability beyond MPFL reconstruction techniques. For this goal, the literature published within the last 3 years considering all aspects of lateral patellar instability was analysed. Six main topics evolved according to the number of publications and in terms of novel aspects and recent developments in the evaluation and treatment of lateral patellar instability. Those topics formed the basis of this article: (1) treatment of first-time patellar dislocation, (2) the impact of trochlear dysplasia and trochleoplasty procedures, (3) the relevance of torsional deformities, (4) patellar instability in open physis, (5) the implementation of new outcome measures, and (6) rehabilitation after patellar stabilizing procedures.
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Du H, Tian XX, Guo FQ, Li XM, Ji TT, Li B, Li TS. Evaluation of different surgical methods in treating recurrent patella dislocation after three-dimensional reconstruction. INTERNATIONAL ORTHOPAEDICS 2017; 41:2517-2524. [PMID: 28702749 DOI: 10.1007/s00264-017-3552-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Accepted: 06/20/2017] [Indexed: 12/13/2022]
Abstract
PURPOSE Recurrent patella dislocation (RPD) is the most common complication of patellar instability. The effects of different surgical techniques on the outcome of RPD treatments remain unclear. This study was conducted to compare the effects of three surgical techniques in treating RPD by three-dimensional (3D) reconstruction from computed tomography (CT) scans. METHODS Sixty-eight patients with RPD and no previous surgical treatments who attended our hospital between October 2010 and 2013 were enrolled and randomly assigned into three groups: (1) medial patellofemoral ligament (MPFL) reconstruction and medial patellar retinaculum (MPR) plication group; (2) lateral patellar retinaculum (LPR) release and MPR plication group; and (3) MPFL reconstruction and LPR release group. Knee joints with flexion of 20° were scanned by a 64-row CT scanner and 3D reconstructed. Congruence angle (CA), patellar tilt angle (PTA), lateral patellofemoral angle (LPFA), and congruence of the lateral patellofemoral articular surface were measured. Knee joint function was evaluated by the Lysholm knee scoring scale, Kujala patellofemoral score, and International Knee Documentation Committee (IKDC) score. RESULTS Pre-operative clinical characteristics were similar across groups. After treatment, the CA, PTA, and LPFA were reverted to normal post-operatively without statistically significant between-group differences. The MPFL reconstruction and LPR release group had the highest congruence of the lateral patellofemoral articular surface; while the (LPR) release and (MPR) plication group had the lowest Lysholm knee scoring scale, Kujala patellofemoral score, and IKDC score after surgery. CONCLUSIONS The MPFL reconstruction and LPR release group had the best clinical outcomes among the three surgical methods, as indicated by better joint congruence after 3D joint reconstruction and higher knee function scores.
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Affiliation(s)
- Hao Du
- Department of Orthopaedics, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, China
| | - Xiao-Xiao Tian
- Department of Gastroenterology, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, No. 24 Jinghua Road, Luoyang, 471003, China.
| | - Fa-Qi Guo
- Department of Orthopaedics, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, China
| | - Xiang-Ming Li
- Department of Orthopaedics, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, China
| | - Tao-Tao Ji
- Department of Orthopaedics, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, China
| | - Bin Li
- Department of Orthopaedics, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, China
| | - Tong-Sen Li
- Department of Orthopaedics, The First Affiliated Hospital, and College of Clinical Medicine of Henan University of Science and Technology, Luoyang, 471003, China
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Christensen TC, Sanders TL, Pareek A, Mohan R, Dahm DL, Krych AJ. Risk Factors and Time to Recurrent Ipsilateral and Contralateral Patellar Dislocations. Am J Sports Med 2017; 45:2105-2110. [PMID: 28463535 DOI: 10.1177/0363546517704178] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Previous studies have reported variable rates of recurrent lateral patellar instability mainly because of limited cohort sizes. In addition, there is currently a lack of information on contralateral patellar instability. PURPOSE To evaluate the rate of recurrent ipsilateral patellar dislocations and contralateral patellar dislocations after a first-time lateral patellar dislocation. Additionally, risk factors associated with recurrent dislocations (ipsilateral or contralateral) and time to recurrence were investigated. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS This population-based study included 584 patients with a first-time lateral patellar dislocation occurring between 1990 and 2010. A retrospective review was conducted to gather information about the injury, subsequent dislocations (ipsilateral or contralateral), and structural characteristics including trochlear dysplasia, patella alta, and tibial tubercle to trochlear groove (TT-TG) distance. Risk factors were assessed to delineate associations with subsequent dislocations and time to recurrence. RESULTS At a mean follow-up of 12.4 years, 173 patients had ipsilateral recurrence, and 25 patients had a subsequent contralateral dislocation. At 20 years, the cumulative incidence of ipsilateral recurrence was 36.0%, while the cumulative incidence of contralateral dislocations was 5.4%. Trochlear dysplasia (odds ratio [OR], 18.1), patella alta (OR, 10.4), age <18 years at the time of the first dislocation (OR, 2.4), elevated TT-TG distance (OR, 2.1), and female sex (OR, 1.5) were associated with recurrent ipsilateral dislocations. Time to recurrence was significantly decreased in patients with trochlear dysplasia (23.0 months earlier time to recurrence; P < .001), elevated TT-TG distance (18.5 months; P < .001), patella alta (16.4 months; P = .001), and age <18 years at the time of the first dislocation (15.4 months; P < .001). Risk factors for subsequent contralateral dislocations included patella alta and trochlear dysplasia. CONCLUSION At 20 years after a first-time lateral patellar dislocation, the cumulative incidence of recurrent ipsilateral patellar dislocations was 36.0%, compared with 5.4% for contralateral dislocations. Trochlear dysplasia, elevated TT-TG distance, patella alta, age <18 years at the time of the first dislocation, and female sex were associated with ipsilateral recurrence. Trochlear dysplasia, elevated TT-TG distance, patella alta, and age <18 years at the time of the first dislocation were predictive of a statistically significant decrease in time to recurrence.
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Affiliation(s)
| | - Thomas L Sanders
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Ayoosh Pareek
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Rohith Mohan
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Diane L Dahm
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Aaron J Krych
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, Minnesota, USA
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32
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Ferlic PW, Runer A, Dirisamer F, Balcarek P, Giesinger J, Biedermann R, Liebensteiner MC. The use of tibial tuberosity-trochlear groove indices based on joint size in lower limb evaluation. INTERNATIONAL ORTHOPAEDICS 2017. [PMID: 28631024 DOI: 10.1007/s00264-017-3531-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
PURPOSE The correlation between tibial tuberosity-trochlear groove distance (TT-TG) and joint size, taking into account several different parameters of knee joint size as well as lower limb dimensions, is evaluated in order to assess whether TT-TG indices should be used in instead of absolute TT-TG values. METHODS This study comprised a retrospective analysis of knee CT scans, including 36 cases with patellofemoral instability (PFI) and 30 controls. Besides TT-TG, five measures of knee joint size were evaluated in axial CT slices: medio-lateral femur width, antero-posterior lateral condylar height, medio-lateral width of the tibia, width of the patella and the proximal-distal joint size (TT-TE). Furthermore, the length of the femur, the tibia and the total leg length were measured in the CT scanogram. Correlation analysis of TT-TG and the other parameters was done by calculating the Spearman correlation coefficient. RESULTS In the PFI group lateral condylar height (r = 0.370), tibia width (r = 0.406) and patella width (r = 0.366) showed significant moderate correlations (p < 0.03) with TT-TG. Furthermore, we found a significant correlation between TT-TG and tibia length (r = 0.371) and total leg length (r = 381). The control group showed no significant correlation between TT-TG and knee joint size or between TT-TG and measures of lower limb length. CONCLUSIONS Tibial tuberosity-trochlear groove distance correlates with several parameters of knee joint size and leg length in patients with patellofemoral instability. Application of indices determining TT-TG as a ratio of joint size could be helpful in establishing the indication for medial transfer of the tibial tuberosity in patients with PFI. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Peter Wilhelm Ferlic
- Department of Orthopaedic Surgery, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria.
| | - Armin Runer
- Department of Orthopaedic Surgery, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
| | | | | | - Johannes Giesinger
- Department of Psychiatry, Medical University of Innsbruck, Innsbruck, Austria
| | - Rainer Biedermann
- Department of Orthopaedic Surgery, Medical University of Innsbruck, Anichstrasse 35, 6020, Innsbruck, Austria
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Zaffagnini S, Grassi A, Zocco G, Rosa MA, Signorelli C, Marcheggiani Muccioli GM. The patellofemoral joint: from dysplasia to dislocation. EFORT Open Rev 2017. [PMID: 28630757 PMCID: PMC5467684 DOI: 10.1302/2058-5241.2.160081] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Patellofemoral dysplasia is a major predisposing factor for instability of the patellofemoral joint. However, there is no consensus as to whether patellofemoral dysplasia is genetic in origin, caused by imbalanced forces producing maltracking and remodelling of the trochlea during infancy and growth, or due to other unknown and unexplored factors.The biomechanical effects of patellofemoral dysplasia on patellar stability and on surgical procedures have not been fully investigated. Also, different anatomical and demographic risk factors have been suggested, in an attempt to identify the recurrent dislocators. Therefore, a comprehensive evaluation of all the radiographic, MRI and CT parameters can help the clinician to assess patients with primary and recurrent patellar dislocation and guide management.Patellofemoral dysplasia still represents an extremely challenging condition to manage. Its controversial aetiology and its complex biomechanical behaviour continue to pose more questions than answers to the research community, which reflects the lack of universally accepted guidelines for the correct treatment. However, due to the complexity of this condition, an extremely personalised approach should be reserved for each patient, in considering and addressing the anatomical abnormalities responsible for the symptoms. Cite this article: EFORT Open Rev 2017;2. DOI: 10.1302/2058-5241.2.160081. Originally published online at www.efortopenreviews.org.
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Affiliation(s)
- Stefano Zaffagnini
- Istituto Ortopedico Rizzoli, Dipartimento Rizzoli Sicilia, Bagheria (PA), Italy.,Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
| | - Alberto Grassi
- Istituto Ortopedico Rizzoli, Dipartimento Rizzoli Sicilia, Bagheria (PA), Italy.,Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
| | - Gianluca Zocco
- Dipartimento di Ortopedia e Traumatologia, Department of Biomedical Sciences and Morphological and Functional Images, Scuola Ortopedia e Traumatologia, Università di Messina, Italy
| | - Michele Attilo Rosa
- Dipartimento di Ortopedia e Traumatologia, Department of Biomedical Sciences and Morphological and Functional Images, Scuola Ortopedia e Traumatologia, Università di Messina, Italy
| | - Cecilia Signorelli
- Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
| | - Giulio Maria Marcheggiani Muccioli
- Istituto Ortopedico Rizzoli, Dipartimento Rizzoli Sicilia, Bagheria (PA), Italy.,Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna (BO), Italy
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34
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Vetrano M, Oliva F, Bisicchia S, Bossa M, De Carli A, Di Lorenzo L, Erroi D, Forte A, Foti C, Frizziero A, Gasparre G, Via AG, Innocenti B, Longo UG, Mahmoud A, Masiero S, Mazza D, Natali S, Notarangelo C, Osti L, Padulo J, Pellicciari L, Perroni F, Piccirilli E, Ramponi C, Salvatore G, Panni AS, Suarez T, Tarantino U, Vittadini F, Vulpiani MC, Ferretti A, Maffulli N. I.S.Mu.L.T. first-time patellar dislocation guidelines. Muscles Ligaments Tendons J 2017; 7:1-10. [PMID: 28717605 DOI: 10.11138/mltj/2017.7.1.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Primary traumatic patellar dislocation is common, particularly in young active individuals. A consensus on its management is still lacking. The present work provides easily accessible guidelines to be considered as recommendations for a good clinical practice developed through a process of systematic review of the literature and expert opinion, to improve the quality of care and rationalize the use of resources. LEVEL OF EVIDENCE Ia.
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Affiliation(s)
- Mario Vetrano
- Physical Medicine and Rehabilitation Unit, Sant'Andrea Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Francesco Oliva
- Department of Orthopaedics and Traumatology, University of Rome "Tor Vergata", Rome, Italy
| | - Salvatore Bisicchia
- Department of Orthopaedic Surgery, San Pietro Fatebenefratelli Hospital, Rome, Italy
| | - Michela Bossa
- Department of Physical Medicine and Rehabilitation, University of Rome "Tor Vergata", Rome, Italy
| | - Angelo De Carli
- Orthopaedic Department and "Kirk Kilgour" Sports Injury Center, Sant'Andrea Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Luigi Di Lorenzo
- Rehabilitation Unit, Neuroscience Department, "RUMMO" Hospital, Benevento, Italy.,Biomedical Research Centre, Gruppo Forte, Salerno, Italy
| | - Davide Erroi
- Physical Medicine and Rehabilitation Unit, Sant'Andrea Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Alfonso Forte
- Biomedical Research Centre, Gruppo Forte, Salerno, Italy
| | - Calogero Foti
- Department of Physical Medicine and Rehabilitation, University of Rome "Tor Vergata", Rome, Italy
| | - Antonio Frizziero
- Department of Physical and Rehabilitation Medicine, University of Padova, Padova, Italy
| | - Giuseppe Gasparre
- Department of Physical and Rehabilitation Medicine, University of Padova, Padova, Italy
| | - Alessio Giai Via
- Department of Orthopaedics and Traumatology, University of Rome "Tor Vergata", Rome, Italy
| | - Bernardo Innocenti
- BEAMS Department (Bio Electro and Mechanical Systems), École Polytechnique de Bruxelles, Université Libre de Bruxelles, Brussels, Belgium
| | - Umile Giuseppe Longo
- Department of Orthopedic and Traumatology, University Campus Bio-Medico of Rome, Rome, Italy
| | - Asmaa Mahmoud
- Department of Physical Medicine and Rehabilitation, University of Rome "Tor Vergata", Rome, Italy
| | - Stefano Masiero
- Department of Physical and Rehabilitation Medicine, University of Padova, Padova, Italy
| | - Daniele Mazza
- Orthopaedic Department and "Kirk Kilgour" Sports Injury Center, Sant'Andrea Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Simone Natali
- Department of Orthopaedics and Traumatology, University of Rome "Tor Vergata", Rome, Italy
| | - Christian Notarangelo
- Department of Physical and Rehabilitation Medicine, University of Padova, Padova, Italy
| | - Leonardo Osti
- Unit of Arthroscopy and Sports Trauma Surgery, Hesperia Hospital, Modena, Italy
| | - Johnny Padulo
- University eCampus, Novedrate, Italy; Tunisian Research Laboratory "Sports Performance Optimization", National Center of Medicine and Science in Sport, Tunis, Tunisia; Faculty of Kinesiology, University of Split, Split, Croatia
| | - Leonardo Pellicciari
- Department of Physical Medicine and Rehabilitation, University of Rome "Tor Vergata", Rome, Italy
| | - Fabrizio Perroni
- School of Exercise and Sport Sciences (SUISM), Department of Medical Sciences, University of Turin, Turin, Italy
| | - Eleonora Piccirilli
- Department of Orthopaedics and Traumatology, University of Rome "Tor Vergata", Rome, Italy
| | - Carlo Ramponi
- Sport Physical Therapist, Kinè Physiotherapic Center, Conegliano, Italy
| | - Giuseppe Salvatore
- Department of Orthopedic and Traumatology, University Campus Bio-Medico of Rome, Rome, Italy
| | - Alfredo Schiavone Panni
- Multidisciplinary Department of Medical-Surgical and Dental Specialty, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Tania Suarez
- Physical Medicine and Rehabilitation Unit, Sant'Andrea Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Umberto Tarantino
- Department of Orthopaedics and Traumatology, University of Rome "Tor Vergata", Rome, Italy
| | - Filippo Vittadini
- Department of Physical and Rehabilitation Medicine, University of Padova, Padova, Italy
| | - Maria Chiara Vulpiani
- Physical Medicine and Rehabilitation Unit, Sant'Andrea Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Andrea Ferretti
- Orthopaedic Department and "Kirk Kilgour" Sports Injury Center, Sant'Andrea Hospital, "Sapienza" University of Rome, Rome, Italy
| | - Nicola Maffulli
- Department of Musculoskeletal Disorders, Faculty of Medicine and Surgery, University of Salerno, Salerno, Italy; Centre for Sports and Exercise Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
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