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Migliorini F, Pilone M, Memminger MK, Eschweiler J, Giorgino R, Maffulli N. All-epiphyseal anterior cruciate ligament reconstruction yields superior sports performances than the trans-epiphyseal technique in skeletally immature patients: a systematic review. J Orthop Traumatol 2024; 25:7. [PMID: 38376718 PMCID: PMC10879072 DOI: 10.1186/s10195-024-00751-9] [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: 07/24/2023] [Accepted: 01/13/2024] [Indexed: 02/21/2024] Open
Abstract
BACKGROUND Anterior cruciate ligament (ACL) tears in skeletally immature patients are increasingly common. Evidence comparing the outcomes of all-epiphyseal versus trans-epiphyseal ACL reconstruction in skeletally immature patients is limited, and the current literature could benefit from a comprehensive systematic review. The present study compared all-epiphyseal versus trans-epiphyseal ACL reconstruction in skeletally immature patients. The outcomes of interest were to compare joint laxity, patient-reported outcome measures (PROMs), return to sport, and complications. METHODS This study was conducted according to the 2020 Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. In November 2023, the following databases were accessed: PubMed, Web of Science, Google Scholar, and Embase. No additional filters were used in the database search. All the clinical studies investigating ACL reconstruction in skeletally immature patients were accessed. Only articles that clearly stated the surgical technique (all- or trans-epiphyseal) were eligible. Only articles with a minimum of 6 months of follow-up were included. Only articles that clearly stated that surgeries were conducted in children with open physis were eligible. RESULTS Data from 1489 patients (1493 procedures) were collected, of which 32% (490 of 1489 patients) were female. The mean length of follow-up was 46.6 months. The mean age of the patients was 12.7 years. No difference was found in joint laxity (Table 3): positive pivot shift (P = 0.4), positive Lachman test (P = 0.3), and mean arthrometer laxity (P = 0.1). No difference was found in PROMs (Table 4): International Knee Documentation Committee (IKDC) (P = 0.3), Lysholm (P = 0.4), and Tegner (P = 0.7). The trans-epiphyseal technique was associated with a greater rate of patients unable to return to sports (1% versus 7%, P = 0.0001) and with a longer time to return to sports (7.7 versus 8.6 months, P = 0.01). Though the trans-epiphyseal technique was associated with a lower rate of return to sport, this difference was not statistically significant (P = 0.8). No difference was evidenced in the rate of patients who had reduced their league or level of sports activity (P = 0.6) or in the rate of patients who had returned to their previous league or level of sports activity (P = 0.7). No difference was found in the rate of complication: re-tear (P = 0.8), reoperation (P = 0.7), increased laxity (P = 0.9), and persistent instability sensation (P = 0.3). CONCLUSION Trans-epiphyseal ACL reconstruction was associated with a greater rate of patients unable to return to sport and with a longer time to return to sport compared with the all-epiphyseal technique in skeletally immature patients. Level of evidence Level III, systematic review.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany.
- Department of Orthopaedics and Trauma Surgery, Academic Hospital of Bolzano (SABES-ASDAA), 39100, Bolzano, Italy.
| | - Marco Pilone
- Residency Program in Orthopedics and Traumatology, University of Milan, Milan, Italy
| | - Michael Kurt Memminger
- Department of Orthopaedics and Trauma Surgery, Academic Hospital of Bolzano (SABES-ASDAA), 39100, Bolzano, Italy
| | - Jörg Eschweiler
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany
- Department of Trauma and Reconstructive Surgery, BG Hospital Bergmannstrost, Halle, Germany
| | - Riccardo Giorgino
- Residency Program in Orthopedics and Traumatology, University of Milan, Milan, Italy
| | - Nicola Maffulli
- Department of Medicine and Psychology, University of Rome "La Sapienza", Rome, Italy
- School of Pharmacy and Bioengineering, Faculty of Medicine, Keele University, ST4 7QB, Stoke on Trent, England
- Barts and the London School of Medicine and Dentistry, Centre for Sports and Exercise Medicine, Queen Mary University of London, Mile End Hospital, E1 4DG, London, England
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Migliorini F, Cocconi F, Schäfer L, Memminger MK, Giorgino R, Maffulli N. Anterior cruciate ligament reconstruction in skeletally immature patients is effective: A systematic review. Knee Surg Sports Traumatol Arthrosc 2024; 32:418-431. [PMID: 38258963 DOI: 10.1002/ksa.12048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 01/24/2024]
Abstract
PURPOSE The present study evaluated the outcomes of anterior cruciate ligament (ACL) reconstruction in children with open physes. The outcomes of interest were to compare the increase in joint laxity and PROMs from baseline to the last follow-up, the rate and features of the return to sport and the rate of complications. METHODS This study was conducted according to the 2020 PRISMA guidelines. In October 2023, the following databases were accessed: PubMed, Web of Science, Google Scholar and Embase. All the clinical studies investigating ACL reconstruction in skeletally immature patients were accessed. Only articles which clearly stated that surgeries were conducted in children with open physis were eligible. RESULTS Data from 53 studies (1691 procedures) were collected. 35% (597 out of 1691 patients) were women. The mean length of the follow-up was 44.7 ± 31.3 months. The mean age of the patients was 12.7 ± 1.1 years old. All PROMs significantly improved from the baseline values to those at the last follow-up. The mean time to return to sport was 8.3 ± 1.9 months. 89% (690 out of 771 patients) returned to sports, 15% (109 out of 721 patients) reduced their level of sports activity or league, and 84% (651 out of 771 patients) returned to their previous level of sport. 9% (112 out of 1213) of patients experienced re-tear of the reconstructed ACL, and 11% (75 out of 660) of patients underwent a further ACL reoperation. No patients (0 out of 83) demonstrated increased laxity at the last follow-up, and persistent sensation of instability was reported by 5% (11 out of 235) of patients. CONCLUSION ACL reconstruction in skeletally immature patients is effective and safe, and is associated with fast recovery and a high rate of return to sport. LEVEL OF EVIDENCE Level IV.
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Affiliation(s)
- Filippo Migliorini
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Medical Centre, Aachen, Germany
- Department of Orthopedics and Trauma Surgery, Academic Hospital of Bolzano (SABES-ASDAA), Bolzano, Italy
| | - Federico Cocconi
- Department of Orthopedics and Trauma Surgery, Academic Hospital of Bolzano (SABES-ASDAA), Bolzano, Italy
| | - Luise Schäfer
- Department of Orthopaedic, Trauma, and Reconstructive Surgery, RWTH University Medical Centre, Aachen, Germany
| | - Michael Kurt Memminger
- Department of Orthopedics and Trauma Surgery, Academic Hospital of Bolzano (SABES-ASDAA), Bolzano, Italy
| | - Riccardo Giorgino
- Residency Program in Orthopaedic and Traumatology, University of Milan, Milan, Italy
| | - Nicola Maffulli
- Department of Medicine and Psychology, University of Rome "La Sapienza", Rome, Italy
- School of Pharmacy and Bioengineering, Keele University Faculty of Medicine, Stoke-on-Trent, UK
- Centre for Sports and Exercise Medicine, Barts and the London School of Medicine and Dentistry, Mile End Hospital, Queen Mary University of London, London, UK
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Khurana K, Pisulkar G. Functional Rehabilitation of Anterior Cruciate Ligament Tear in the Pediatric Population: A Comprehensive Review. Cureus 2023; 15:e49863. [PMID: 38170114 PMCID: PMC10759723 DOI: 10.7759/cureus.49863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Accepted: 12/03/2023] [Indexed: 01/05/2024] Open
Abstract
Pediatric sports injuries are a growing concern due to increased youth participation in sports. Effective rehabilitation strategies are essential for ensuring optimal recovery, restoring knee function, and preventing long-term consequences. This research aims to explore and evaluate various functional rehabilitation approaches tailored to pediatric anterior cruciate ligament (ACL) tear injuries. Functional rehabilitation of ACL tears in pediatric sports injuries is an important area of research due to the unique considerations and challenges that arise when treating ACL injuries in young athletes. Over the last 20 years, there has been a well-documented uptick in ACL injuries among pediatric populations. This rise can be attributed to the growing involvement of the younger population in competitive sports, as well as heightened awareness regarding sports-linked injuries. This study highlights the importance of early surgical reconstruction in children to enable a quick return to sports and prevent long-term cartilage and meniscal damage resulting from instability. The use of physeal-sparing ACL reconstruction techniques, particularly hamstring autografts, is recommended for favorable clinical outcomes while minimizing growth disturbances. This study offers valuable insights for healthcare professionals and researchers, serving as a reference to guide optimal approaches in managing pediatric ACL injuries and achieving successful results in this field.
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Affiliation(s)
- Khushi Khurana
- Orthopaedics and Rehabilitation, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Gajanan Pisulkar
- Orthopaedic Surgery, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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Pauw AHJ, Buck TMF, Gokeler A, Tak IJR. Reconsideration of Return-to-Sport Decision-Making After Pediatric ACL Injury: A Scoping Review. Sports Health 2023; 15:898-907. [PMID: 36715226 PMCID: PMC10606966 DOI: 10.1177/19417381221146538] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
CONTEXT Up to 90% of pediatric athletes return to sport (RTS) after anterior cruciate ligament reconstruction (ACL-R); however, <50% RTS at the same level and second ACL injury rates are up to 32%. OBJECTIVES (1) Determine which physical and patient-reported outcome measures guide clinical decision-making on RTS in pediatric athletes after ACL-R and (2) present a framework with insights from cognitive and neurophysiological domains to enhance rehabilitation outcomes. DATA SOURCES PubMed, CINAHL, Embrase, and Cochrane library databases and gray literature. STUDY SELECTION Data on pediatric (<18 years) ACL-R patients, RTS, tests, and decision-making were reported in 1214 studies. Two authors independently reviewed titles and abstract, excluding 962 studies. Gray literature and cross-reference checking resulted in 7 extra studies for full-text screening of 259 studies. Final data extraction was from 63 eligible studies. STUDY DESIGN Scoping review. LEVEL OF EVIDENCE Level 4. DATA EXTRACTION Details on study population, aims, methodology, intervention, outcome measures, and important results were collected in a data chart. RESULTS Studies included 4456 patients (mean age, 14 years). Quadriceps and hamstring strength (n = 25), knee ligament arthrometer (n = 24), and hop tests (n = 22) were the most-reported physical outcome measures guiding RTS in <30% of studies with cutoff scores of limb symmetry index (LSI) ≥85% or arthrometer difference <3 mm. There were 19 different patient-reported outcome measures, most often reporting the International Knee Documentation Committee (IKDC) (n = 24), Lysholm (n = 23), and Tegner (n = 15) scales. Only for the IKDC was a cutoff value of 85% reported. CONCLUSION RTS clearance in pediatric ACL-R patients is not based on clear criteria. If RTS tests were performed, outcomes did not influence time of RTS. Postoperative LSI thresholds likely overestimate knee function since biomechanics are impaired despite achieving RTS criteria. RTS should be considered a continuum, and biomechanical parameters and contextual rehab should be pursued with attention to the individual, task, and environment. There is a need for psychological monitoring of the ACL-R pediatric population.
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Affiliation(s)
| | - Tristan Marcel Frank Buck
- Amsterdam Collaboration on Health and Safety in Sports, Department of Public and Occupational Health, Amsterdam Movement Sciences, VU University Medical Centre, Amsterdam, the Netherlands
| | - Alli Gokeler
- Amsterdam Collaboration on Health and Safety in Sports, Department of Public and Occupational Health, Amsterdam Movement Sciences, VU University Medical Centre, Amsterdam, the Netherlands
- Amsterdam University of Applied Sciences, Faculty of Health, Amsterdam, the Netherlands
| | - Igor Joeri Ramon Tak
- Amsterdam Collaboration on Health and Safety in Sports, Department of Public and Occupational Health, Amsterdam Movement Sciences, VU University Medical Centre, Amsterdam, the Netherlands
- Fysiotherapie Utrecht Oost, Utrecht, the Netherlands
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Patil V, Rajan P, Hayter E, Bartlett J, Symons S. Growth Disturbances Following Paediatric Anterior Cruciate Ligament Reconstruction: A Systematic Review. Cureus 2023; 15:e40455. [PMID: 37456432 PMCID: PMC10349531 DOI: 10.7759/cureus.40455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/14/2023] [Indexed: 07/18/2023] Open
Abstract
Growth disturbances after transphyseal paediatric anterior cruciate ligament (ACL) reconstruction have led to the development of physeal-sparing techniques. The aim of this study is to investigate growth disturbances following paediatric ACL reconstruction and identify associated risk factors. A systematic search on PubMed, Scopus and Web of Science databases was conducted using Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to identify case series reporting paediatric ACL reconstructions. Of 518 articles, 78 met the inclusion criteria, and data related to growth disturbances and graft failures were extracted. A total of 2,693 paediatric ACL reconstructions resulted in 70 growth disturbances (2.6%): 17 were varus, 26 were valgus, 13 were shortening, 14 were lengthening and five patients had reduced tibial slope. Some patients showed deformities in more than one plane. Coronal plane deformities were seen more frequently with eccentric physeal arrest and lengthening with intraepiphyseal tunnelling. Shortening and reduced tibial slope were related to large central physeal arrest and anterior tibial physeal arrest, respectively. Sixty-two studies documented 166 graft failures in 2,120 reconstructions (7.8%). The extraphyseal technique was least likely to result in growth disturbances and graft failure. Paediatric ACL reconstruction is a safe and effective treatment of rupture. Growth disturbances are least likely following extraphyseal tunnelling, and those resulting from transphyseal techniques can be minimised by reducing drill size, drilling steep and avoiding the physeal periphery. The insertion of hardware, synthetic material, or a bone plug through the drilled physis should be avoided. There is a greater need for robust long-term data collection, such as national ligament registries, to standardise practice and evaluate the risk of growth disturbance and re-ruptures in this treatment.
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Affiliation(s)
- Vijay Patil
- Trauma and Orthopaedics, Basildon University Hospital, Basildon, GBR
| | - Praveen Rajan
- Trauma and Orthopaedics, Basildon University Hospital, Basildon, GBR
| | - Edward Hayter
- Trauma and Orthopaedics, Basildon University Hospital, Basildon, GBR
| | | | - Sean Symons
- Trauma and Orthopaedics, Basildon University Hospital, Basildon, GBR
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Green DW, Hidalgo Perea S, Brusalis CM, Chipman DE, Asaro LA, Cordasco FA. A Modified Lemaire Lateral Extra-articular Tenodesis in High-Risk Adolescents Undergoing Anterior Cruciate Ligament Reconstruction With Quadriceps Tendon Autograft: 2-Year Clinical Outcomes. Am J Sports Med 2023; 51:1441-1446. [PMID: 36917840 DOI: 10.1177/03635465231160681] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
BACKGROUND The incidence of anterior cruciate ligament (ACL) reconstruction (ACLR) in children and adolescents has increased significantly, and many such patients are at increased risk for ACL retear. Lateral extra-articular tenodesis (LET) may be performed in conjunction with ACLR to reduce the risk of ACL retear. PURPOSE To evaluate the 2-year clinical outcomes of ACLR with soft tissue quadriceps tendon (QUAD) autograft performed with a concomitant LET using a modified Lemaire technique in skeletally immature patients. STUDY DESIGN Case series; Level of evidence, 4. METHODS A consecutive series of adolescent patients who underwent QUAD autograft ACLR and LET with a minimum of 2 years of follow-up data were analyzed retrospectively. ACLR techniques, including all-epiphyseal and complete transphyseal, were indicated based on skeletal age. Outcome measures included return to sports, concomitant or subsequent surgical procedures, and multiple patient-reported outcome measures, including Single Assessment Numeric Evaluation (SANE), Pediatric International Knee Documentation Committee (Pedi-IKDC), and Hospital for Special Surgery Pediatric Functional Activity Brief Scale (HSS Pedi-FABS) scores. RESULTS The final cohort included 49 consecutive adolescent patients aged 11 to 16 years (mean, 14.2 ± 1 years) with a minimum follow-up of 2 years. One patient was lost to follow-up. Of the patients included in the study (N = 48; 27 male, 21 female), 98% participated in high-risk competitive sports. Two (4%) patients were undergoing revision ACLR. Thirty-eight (79%) patients underwent complete transphyseal, and 10 (21%) patients underwent all-epiphyseal ACLR. Sixteen (33%) patients had subsequent surgical procedures, including 5 contralateral ACLR, 4 meniscal surgery, 4 QUAD autograft scar revision, 4 irrigation and debridement (2 patients, 2 each), and 3 hardware removal (2 for hemi-epiphysiodesis and 1 tibial socket button removal) procedures. The rate of graft rupture was 0%. At a mean follow-up of 3.4 ± 1.2 years (range, 2-7 range), the mean SANE score was 93, the mean Pedi-IKDC score was 89, and the mean HSS Pedi-FABS score was 23. The return-to-sports rate was 100%. CONCLUSION An LET performed concomitantly with an ACLR is safe and should be considered as a concomitant procedure for adolescent patients with nonmodifiable risk factors who are at high risk of retear.
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Affiliation(s)
- Daniel W Green
- Pediatric Orthopaedic Surgery Service, Hospital for Special Surgery, New York, New York, USA.,Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, USA
| | - Sofia Hidalgo Perea
- Pediatric Orthopaedic Surgery Service, Hospital for Special Surgery, New York, New York, USA
| | - Christopher M Brusalis
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, USA
| | - Danielle E Chipman
- Pediatric Orthopaedic Surgery Service, Hospital for Special Surgery, New York, New York, USA
| | - Lori A Asaro
- Sports Medicine Institute, Hospital for Special Surgery, New York, New York, USA
| | - Frank A Cordasco
- Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, USA.,Sports Medicine Institute, Hospital for Special Surgery, New York, New York, USA
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Romanchuk NJ, Livock H, Lukas KJ, Del Bel MJ, Benoit DL, Carsen S. Criteria Used to Determine Unrestricted Return to Activity After ACL Reconstruction in Pediatric and Adolescent Patients: A Systematic Review. Orthop J Sports Med 2023; 11:23259671231154540. [PMID: 36909673 PMCID: PMC9996745 DOI: 10.1177/23259671231154540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 10/11/2022] [Indexed: 03/14/2023] Open
Abstract
Background The rates of anterior cruciate ligament (ACL) graft failure or contralateral ACL rupture range from 17% to 30% in pediatric patients after ACL reconstruction (ACLR). A contributing factor to the high reinjury rate in this population may be the limited evidence regarding appropriate criteria for allowing unrestricted return to activity (RTA) postoperatively. Purpose To review the literature and identify the most commonly used criteria when determining unrestricted RTA after ACLR in pediatric patients. Study Design Systematic review; Level of evidence, 4. Methods A search was performed of the Medline/PubMed, Cochrane Central Register of Controlled Trials, Embase, CINAHL, and SPORTDiscus databases using the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. The authors identified studies that included pediatric patients (<19 years of age) and specified the criteria used to determine RTA after ACLR. Results A total of 27 articles met all criteria for review, of which 13 studies only used 1 criterion when determining RTA. Objective criteria were the most common type of criteria for RTA (17 studies). Strength tests (15 studies) and hop tests (10 studies) were the most commonly used tasks when deriving RTA criteria. Only 2 studies used validated questionnaires to assess the patient's physiological readiness for RTA, and only 2 studies used an objective assessment of movement quality before RTA. Conclusion Only 14 of the 27 reviewed studies reported using >1 criterion when determining RTA. Furthermore, few studies used patient-reported outcome measures or lower limb kinematics as RTA criteria, indicating that more research is needed to validate these metrics in the pediatric population.
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Affiliation(s)
- Nicholas J Romanchuk
- Biomedical Engineering Program, Faculty of Engineering, University of Ottawa, Ottawa, Ontario, Canada
| | - Holly Livock
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada
| | - Kenneth J Lukas
- Division of Orthopaedic Surgery, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Michael J Del Bel
- School of Rehabilitation Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - Daniel L Benoit
- School of Rehabilitation Sciences, Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
| | - Sasha Carsen
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada.,Division of Orthopaedic Surgery, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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Pagliazzi G, Cuzzolin M, Pacchiarini L, Delcogliano M, Filardo G, Candrian C. Physeal-sparing ACL reconstruction provides better knee laxity restoration but similar clinical outcomes to partial transphyseal and complete transphyseal approaches in the pediatric population: a systematic review and meta-analysis. Knee Surg Sports Traumatol Arthrosc 2023; 31:206-218. [PMID: 35838794 DOI: 10.1007/s00167-022-07032-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 05/30/2022] [Indexed: 01/25/2023]
Abstract
PURPOSE The aim of this meta-analysis was to evaluate complete transphyseal (CTP), partial transphyseal (PTP), and physeal-sparing (PS) techniques for anterior cruciate ligament (ACL) reconstruction. METHODS A systematic literature search of the PubMed, Web of Science, Cochrane Library, and Scopus literature databases was performed on 10.05.2021. All human studies evaluating the outcomes of CTP, PTP, and PS techniques were included. The influence of the selected approach was evaluated in terms of rates of retears, return to previous level of sport competition, IKDC subjective and objective scores, Lysholm score, rate of normal Lachman and pivot-shift tests, limb length discrepancy, and hip-knee angle (HKA) deviation. Risk of bias and quality of evidence were assessed following the Downs and Black checklist. RESULTS Forty-nine out of 425 retrieved studies (3260 patients) met the inclusion criteria. The results of the meta-analysis comparing CTP, PTP, and PS approaches for ACL reconstruction in the under 20-year-old population showed a significant difference in terms of differential laxity (CTP 1.98 mm, PTP 1.69 mm, PS 0.22 mm, p < 0.001). No significant differences were seen in terms of growth malalignment, rate of normal Lachman and pivot-shift tests, and rate of normal/quasi-normal IKDC objective score. CONCLUSIONS The present meta-analysis found overall similar results with the three ACL reconstruction approaches. The PS technique showed better results in terms of knee laxity than the PTP and CTP approaches, but this did not lead to a significant difference in terms of subjective and objective scores. No clear superiority of one technique over the others was found with respect to re-ruptures, growth disturbances, and axial deviations. While the argument for avoiding growth malalignment does not seem to be a crucial point, the PS technique should be the preferred approach in a young population to ensure knee laxity restoration. LEVEL OF EVIDENCE Level III.
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Affiliation(s)
- Gherardo Pagliazzi
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland
- Department of Paediatric Orthopaedics, University of Basel Children's Hospital, Basel, Switzerland
| | - Marco Cuzzolin
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland
| | - Luca Pacchiarini
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland.
| | - Marco Delcogliano
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
| | - Giuseppe Filardo
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
| | - Christian Candrian
- Service of Orthopaedics and Traumatology, Department of Surgery, EOC, Lugano, Switzerland
- Faculty of Biomedical Sciences, Università della Svizzera Italiana, Lugano, Switzerland
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Anterior Cruciate Ligament Reconstruction in Skeletally Immature Athletes Using All-Epiphyseal Techniques. Clin Sports Med 2022; 41:569-577. [DOI: 10.1016/j.csm.2022.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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10
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Improved epiphyseal socket placement with intraoperative 3D fluoroscopy: a consecutive series of pediatric all-epiphyseal anterior cruciate ligament reconstruction. Knee Surg Sports Traumatol Arthrosc 2022; 30:1858-1864. [PMID: 35037072 DOI: 10.1007/s00167-021-06809-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 11/17/2021] [Indexed: 12/31/2022]
Abstract
PURPOSE Disturbance of the growth plate during all-epiphyseal anterior cruciate ligament reconstruction (ACLR) socket placement is possible due to the undulation of the distal femoral physis and proximal tibial physis. Therefore, it is important to obtain intraoperative imaging of the guide wire prior to reaming the socket. The purpose of this study was to investigate the effect of the use of 3D intraoperative fluoroscopy on socket placement in patients undergoing all-epiphyseal ACLR. It was hypothesized that 3D imaging would allow for more accurate intraoperative visualization of the growth plate and hence a lower incidence of growth plate violation compared to 2D imaging. METHODS Patients under the age of 18 who underwent a primary all-epiphyseal ACL reconstruction by the senior authors and had an available postoperative MRI were retrospectively reviewed. Demographic data, surgical details, and the distances between the femoral socket and distal femoral physis (DFP) and tibial socket and proximal tibial physis (PTP) were recorded. Patients were split into two groups based on type of intraoperative fluoroscopy used: a 2D group and a 3D group. Interrater reliability of radiographic measurements was evaluated using intraclass correlation coefficient (ICC). RESULTS Seventy-two patients fit the inclusion criteria and were retrospectively reviewed. 54 patients had 2D imaging and 18 patients had 3D imaging. The mean age at time of surgery was 12.3 ± 1.5 years, 79% of patients were male, and 54% tore their left ACL. The mean time from surgery to postoperative MRI was 2.0 ± 1.1 years. The ICC was 0.92 (95% CI 0.35-0.98), indicating almost perfect interrater reliability. The mean difference in distance between the tibial socket and the PTP was significantly less in the 2D imaging group than the 3D imaging group (1.2 ± 1.7 mm vs 2.5 ± 2.2 mm, p = 0.03). The femoral and tibial sockets touched or extended beyond the DFP or PTP, respectively, significantly less in the 3D group than in the 2D group (11% vs 43%, p < 0.000, 17% vs 65%, p < 0.000). CONCLUSION There was a significantly increased distance from the PTP and decreased incidence of DFP violation with use of 3D intraoperative imaging for all-epiphyseal ACLR socket placement. Surgeons should consider utilizing 3D imaging prior to creating femoral and tibial sockets to potentially decrease the risk of physis violation in these patients. LEVEL OF EVIDENCE III.
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11
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Cancino B, Muñoz C, Tuca MJ, Birrer EAM, Sepúlveda MF. Anterior Cruciate Ligament Rupture in Skeletally Immature Patients. J Am Acad Orthop Surg Glob Res Rev 2022; 6:01979360-202205000-00007. [PMID: 35588096 PMCID: PMC10531303 DOI: 10.5435/jaaosglobal-d-21-00166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 03/15/2022] [Indexed: 06/15/2023]
Abstract
In the past 20 years, sports injuries in pediatric and adolescent athletes have increased dramatically, with anterior cruciate ligament (ACL) injuries accounting for more than 25% of all knee injuries at this age. Diagnosis is based on detailed clinical history, physical examination, and imaging assessment, where magnetic resonance imaging plays a central role. The growing immature skeleton presents specific characteristics, which require unique methods for surgical reconstruction, ideally avoiding the physes or minimizing the risk of damaging them. Specific rehabilitation protocols are needed, and these patients face a higher risk of recurrent and contralateral ACL injury. Nonsurgical treatment or delayed reconstruction has been associated with persistent instability, activity modifications, worst functional outcomes, and increased risk of irreparable injuries to menisci and articular cartilage. Consequently, surgical stabilization is the preferred treatment for most patients, despite the eventual risk of angular deformities or limb-length discrepancies due to iatrogenic physeal injury. A variety of surgical techniques have been described, depending on the skeletal maturity and growth remaining. Targeted prevention programs play a key role in reducing the risk of ACL injury, are easy to implement, and require no additional equipment. High-quality evidence supports its use in all pediatric athletes.
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Affiliation(s)
- Benjamín Cancino
- From the Universidad Austral de Chile, Valdivia, Chile (Dr. Cancino, Dr. Muñoz, Dr. Birrer, and Dr. Sepúlveda); the Clínica Alemana, Santiago, Chile (Dr. Tuca); the Universidad del Desarrollo, Santiago, Chile (Dr. Tuca); the Hospital Clínico Mutual de Seguridad, Santiago, Chile (Dr. Tuca); and Hospital Base de Valdivia, Valdivia, Chile (Dr. Birrer, and Dr. Sepúlveda)
| | - Carlos Muñoz
- From the Universidad Austral de Chile, Valdivia, Chile (Dr. Cancino, Dr. Muñoz, Dr. Birrer, and Dr. Sepúlveda); the Clínica Alemana, Santiago, Chile (Dr. Tuca); the Universidad del Desarrollo, Santiago, Chile (Dr. Tuca); the Hospital Clínico Mutual de Seguridad, Santiago, Chile (Dr. Tuca); and Hospital Base de Valdivia, Valdivia, Chile (Dr. Birrer, and Dr. Sepúlveda)
| | - María Jesús Tuca
- From the Universidad Austral de Chile, Valdivia, Chile (Dr. Cancino, Dr. Muñoz, Dr. Birrer, and Dr. Sepúlveda); the Clínica Alemana, Santiago, Chile (Dr. Tuca); the Universidad del Desarrollo, Santiago, Chile (Dr. Tuca); the Hospital Clínico Mutual de Seguridad, Santiago, Chile (Dr. Tuca); and Hospital Base de Valdivia, Valdivia, Chile (Dr. Birrer, and Dr. Sepúlveda)
| | - Estefanía A. M. Birrer
- From the Universidad Austral de Chile, Valdivia, Chile (Dr. Cancino, Dr. Muñoz, Dr. Birrer, and Dr. Sepúlveda); the Clínica Alemana, Santiago, Chile (Dr. Tuca); the Universidad del Desarrollo, Santiago, Chile (Dr. Tuca); the Hospital Clínico Mutual de Seguridad, Santiago, Chile (Dr. Tuca); and Hospital Base de Valdivia, Valdivia, Chile (Dr. Birrer, and Dr. Sepúlveda)
| | - Matías F. Sepúlveda
- From the Universidad Austral de Chile, Valdivia, Chile (Dr. Cancino, Dr. Muñoz, Dr. Birrer, and Dr. Sepúlveda); the Clínica Alemana, Santiago, Chile (Dr. Tuca); the Universidad del Desarrollo, Santiago, Chile (Dr. Tuca); the Hospital Clínico Mutual de Seguridad, Santiago, Chile (Dr. Tuca); and Hospital Base de Valdivia, Valdivia, Chile (Dr. Birrer, and Dr. Sepúlveda)
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Dhillon MS, Rangasamy K, Rajnish RK, Gopinathan NR. Paediatric Anterior Cruciate Ligament (ACL) Injuries: Current Concepts Review. Indian J Orthop 2022; 56:952-962. [PMID: 35669018 PMCID: PMC9123120 DOI: 10.1007/s43465-022-00611-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 02/09/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND Over the past two decades, there has been a documented increase in paediatric ACL injuries because of a rise in younger age sports participation at the competitive level, awareness about sports-related injuries, and advanced imaging modalities. METHODS A PubMed electronic database search was done, which revealed 1366 hits over the last five years (2016 - 2020). Finally, 37 articles that contributed to new findings were included. This review was conducted based on predefined research questions. RESULTS AND CONCLUSION Early surgical reconstruction is recommended in children due to the increasing demand for early return to sports and to prevent the instability that can lead to progressive cartilage and meniscal damage. With the evolution of several "physeal sparing" ACL reconstruction (ACLR) techniques, a favorable clinical outcome with less growth disturbance is achievable. Although different autograft options are available, hamstring autografts are most commonly preferred. A specific pattern of a bone bruise not extending into the metaphysis, and lateral meniscus tears are the most common associated injuries. Following paediatric ACLR, complications like graft rupture and contralateral ACL injuries are two to three folds higher than with adult ACLR. Unprepared early return to sports is one of the reasons for increased complication rates in children; thus, clearance criteria for return to sports need to be standardized, and early return to sports (< 9 months post ACLR) should be avoided. Neuromuscular training protocols are recommended to minimize complications like graft ruptures.
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Affiliation(s)
- Mandeep Singh Dhillon
- grid.415131.30000 0004 1767 2903Department of Orthopaedics, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Karthick Rangasamy
- grid.415131.30000 0004 1767 2903Department of Orthopaedics, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Rajesh Kumar Rajnish
- grid.413618.90000 0004 1767 6103Department of Orthopaedics, AIIMS, Bilaspur, India
| | - Nirmal Raj Gopinathan
- grid.415131.30000 0004 1767 2903Department of Orthopaedics, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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Anterior Cruciate Ligament Injuries in Skeletally Immature Patients: A Meta-analysis Comparing Repair Versus Reconstruction Techniques. J Pediatr Orthop 2020; 40:492-502. [PMID: 32282620 DOI: 10.1097/bpo.0000000000001569] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Anterior cruciate ligament (ACL) surgery remains challenging in the skeletally immature patient. Despite the widespread use of physeal-sparing reconstruction techniques, there has been renewed interest in the ACL repair. The purpose of this study was to systematically review the literature to better understand outcomes following all-epiphyseal (AE) reconstruction to extraphyseal reconstruction, while also evaluating ACL repair outcomes in skeletally immature patients. METHODS Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, all studies in the literature from January 1970 to August 2019 reporting on skeletally immature patients undergoing ACL surgery were identified. Inclusion criteria were pediatric patients with open physes indicative of skeletal immaturity sustaining complete ACL ruptures treated with AE reconstruction, extraphyseal reconstruction or ACL repair. Chronologic age, bone age, postoperative outcomes scores, return to sport rate, and the incidence of complications, namely reruptures, were analyzed. RESULTS A total of 14 studies comprising 443 patients were identified. No significant difference in chronologic age or postoperative outcome scores at final follow-up were appreciated between patients undergoing AE versus extraphyseal reconstruction. Return to activity rate was significant greater following extraphyseal reconstruction when compared with AE reconstruction. The incidence of any limb-length discrepancies and limb discrepancies measuring ≥10 mm were significant higher following AE reconstruction, while rerupture rates were more common following AE reconstruction. CONCLUSIONS Patients undergoing AE reconstruction possessed significantly lower return to activity rates, higher incidences of limb-length discrepancies and more commonly experienced ACL reruptures when compared with patients undergoing extraphyseal reconstruction. Further investigations analyzing results following ACL repair in skeletally immature patients are warranted to allow for the comparison of outcomes with current physeal-sparing reconstruction techniques. LEVEL OF EVIDENCE Level IV-systematic review-therapeutic study.
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Rugg CM, Pitcher AA, Allen C, Pandya NK. Revision ACL Reconstruction in Adolescent Patients. Orthop J Sports Med 2020; 8:2325967120953337. [PMID: 33062768 PMCID: PMC7534089 DOI: 10.1177/2325967120953337] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 04/24/2020] [Indexed: 12/14/2022] Open
Abstract
Background: High failure rates have been documented after anterior cruciate ligament reconstruction (ACLR) in pediatric patients, and revision surgery is indicated due to high activity levels of children and adolescents. Purpose: To define trends in revision ACLR in patients who underwent initial ACLR at younger than 18 years. Study Design: Case series; Level of evidence, 4. Methods: An electronic medical record was used to retrospectively identify revision ACLR procedures performed by 2 surgeons between the years 2010 and 2016 in patients younger than 18 years at initial reconstruction. Descriptive information, intraoperative findings, surgical techniques, and rehabilitation data were recorded from initial and revision surgeries. Descriptive statistics were used. Results: A total of 32 patients (17 girls, 15 boys) met the inclusion criteria, with a mean age of 15.8 years at initial reconstruction. For initial reconstructions, 15 patients underwent transphyseal procedures, 3 patients underwent adult-type procedures using an anatomic reconstruction technique that did not take into account the physis, and 2 patients underwent partial intraepiphyseal procedures. Graft types included hamstring autograft (n = 17), allograft (n = 5), hybrid (n = 4), and bone–patellar tendon–bone autograft (BTB; n = 3). Average primary reconstruction graft diameter was 8.0 mm (girls, 7.72 mm; boys, 8.36 mm; P = .045). After initial reconstruction, 10 patients had postoperative protocol noncompliance, and 8 patients reported delayed recovery. Mean time to retear was 565 days (range, 25-1539 days). At revision, BTB autograft was used in 50% (n = 16), followed by hamstring autograph (31.3%; n = 10) and allograft (12.5%; n = 4); mean graft diameter was 9.05 mm. Chondral surgery was more common during revision (25% for revision vs 0% for index; P = .031). There were 4 patients who required staged reconstruction with bone grafting. At mean final follow-up of 29.5 months (SD, 22.2 months), there were 3 graft failures (9.4%) and 5 contralateral ACL ruptures (15.6%). Conclusion: Most patients with ACL graft failure were adequately treated with a single revision. Conversion from a soft tissue graft to a BTB autograft was the most common procedure. Infrequently, patients required staged reconstructions. Providers should have a high index of suspicion for associated intra-articular injuries resulting from graft failure in adolescent patients.
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Affiliation(s)
- Caitlin M Rugg
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Austin A Pitcher
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Christina Allen
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Nirav K Pandya
- Department of Orthopedic Surgery, University of California San Francisco, San Francisco, CA, USA
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Gupta A, Tejpal T, Shanmugaraj A, Horner NS, Gohal C, Khan M. All-epiphyseal anterior cruciate ligament reconstruction produces good functional outcomes and low complication rates in pediatric patients: a systematic review. Knee Surg Sports Traumatol Arthrosc 2020; 28:2444-2452. [PMID: 32504159 DOI: 10.1007/s00167-020-06085-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 05/28/2020] [Indexed: 01/16/2023]
Abstract
PURPOSE To assess the literature on indications, outcomes, and complications in pediatric patients undergoing all-epiphyseal (AE) anterior cruciate ligament reconstruction (ACLR). METHODS PubMed, Medline, and Embase were searched for literature evaluating AE ACLR in pediatric patients. All included studies were assessed for quality using the Methodological Index for Non-Randomized Studies (MINORS). Descriptive statistics are presented where applicable. RESULTS Overall, 17 studies comprising 545 patients, with a mean age of 12.0 ± 1.2 (range 8-19) met the inclusion criteria. The graft choices in this systematic review included hamstring tendon autografts (75.4%, n = 403), quadriceps tendon autograft (6.2%, n = 33), Achilles tendon allograft (3.6%, n = 19) and posterior tibialis tendon allograft in one patient (0.2%, n = 1). Time of return-to-sport ranged from 8 to 22 months. Postoperative subjective IKDC scores were above 90 points. The rate of return-to-sport after AE ACLR was 93.2% (n = 219/235) and 77.9% (n = 142/183) of patients returned to sport at pre-injury level. The overall complication rate was 9.8% (n = 53/545) with the most common complication being ACL re-rupture (5.0%; n = 27/545). Only 1.5% (n = 8/545) of patients demonstrated growth disturbances. CONCLUSION Overall, the AE ACLR technique can achieve good postoperative functional outcomes while notably minimizing the incidence of primary issue of physeal disruption and potential associated leg-length discrepancies. AE ACLR should be considered in pediatric patients with at least 2 years of skeletal growth remaining based on radiographic bone age to minimize the impact of growth-related complications. LEVEL OF EVIDENCE IV (Systematic Review of Level III and IV evidence).
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Affiliation(s)
- Arnav Gupta
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Tushar Tejpal
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Ajaykumar Shanmugaraj
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Nolan S Horner
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Chetan Gohal
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada
| | - Moin Khan
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada.
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Zebis MK, Warming S, Pedersen MB, Kraft MH, Magnusson SP, Rathcke M, Krogsgaard M, Døssing S, Alkjær T. Outcome Measures After ACL Injury in Pediatric Patients: A Scoping Review. Orthop J Sports Med 2019; 7:2325967119861803. [PMID: 31431900 PMCID: PMC6685120 DOI: 10.1177/2325967119861803] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND The incidence of anterior cruciate ligament (ACL) injuries in children is increasing. However, no standardized core set of outcome measures exists for evaluating pediatric ACL injuries. PURPOSE To perform a scoping review of the literature to identify patient-reported outcome measures (PROMs) and objective outcome measures used to evaluate pediatric patients after ACL injury and to classify these in accordance with the International Classification of Functioning, Disability, and Health (ICF) domains. STUDY DESIGN Systematic review; Level of evidence, 4. METHODS The literature was systematically searched with the PubMed, EMBASE, CINAHL, and PEDro databases. The inclusion criteria were Danish, Norwegian, Swedish, German, or English language; publication between 2010 and 2018; pediatric ACL injury (patients ≤15 years old); and outcome measures. The selected papers were screened for title, abstract, and full text in accordance with predefined inclusion and exclusion criteria. RESULTS A total of 68 papers (4286 patients; mean ± SD age, 12.2 ± 2.3 years) were included. Nineteen PROMs and 11 objective outcome measures were identified. The most frequently reported PROMs were the International Knee Documentation Committee (IKDC) Subjective Knee Form (51% of studies), Lysholm scoring scale (46% of studies) and Tegner activity rating scale (37% of studies). Additionally, return to sport was reported in 41% of studies. The most frequent objective measures were knee laxity (76% of studies), growth disturbances (69% of studies), range of motion (41% of studies), and muscle strength (21% of studies). With respect to the ICF domains, the IKDC covered all 3 ICF health domains, the Lysholm score covered the Body Structure and Function and the Activity Limitation domains, while the Tegner score covered the Participation Restriction domain. Objectively measured knee joint laxity, range of motion, and muscle strength covered 1 domain (Body Structure and Function). CONCLUSION Pediatric patients with ACL injury were mainly evaluated subjectively with the IKDC and objectively by knee joint laxity. No consensus exists in the evaluation of children after ACL injury. The majority of applied outcome measures are developed for adults. To cover the ICF health domains, future research needs to consider reliable and valid outcome measures relevant for pediatric patients with ACL injury.
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Affiliation(s)
- Mette K. Zebis
- Department of Physiotherapy, Faculty of Health and Technology, University College Copenhagen, Copenhagen, Denmark
| | - Susan Warming
- Department of Physical and Occupational Therapy, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Maria B. Pedersen
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Marie H. Kraft
- Department of Physiotherapy, Faculty of Health and Technology, University College Copenhagen, Copenhagen, Denmark
| | - S. Peter Magnusson
- Department of Physical and Occupational Therapy, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
- Institute of Sports Medicine Copenhagen, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Martin Rathcke
- Section for Sports Traumatology M51, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Michael Krogsgaard
- Section for Sports Traumatology M51, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Simon Døssing
- Institute of Sports Medicine Copenhagen, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Tine Alkjær
- Department of Physical and Occupational Therapy, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
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