1
|
Hartman H, Cacace A, Leatherman H, Ashkani-Esfahani S, Guss D, Waryasz G, DiGiovanni CW, Gianakos AL. Gender Differences in Achilles Tendon Ruptures-A Retrospective Study and a Review of the Literature. J Foot Ankle Surg 2024:S1067-2516(24)00087-5. [PMID: 38763172 DOI: 10.1053/j.jfas.2024.04.005] [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: 12/14/2023] [Revised: 04/21/2024] [Accepted: 04/22/2024] [Indexed: 05/21/2024]
Abstract
Achilles tendon ruptures are common injuries typically sustained during sport with higher incidence in men, though little is understood regarding sex-specific risk factors or outcomes following injury management. This cross-sectional clinical study and systematic review aimed to examine sex-specific Achilles tendon rupture incidence and outcomes following intervention. This study included patients who sustained a rupture between 2011-2021, were ≥18 years old, and who had a minimum follow-up of at least six months, and evaluated age, sex, sport involvement, mechanism of injury, and postoperative complications and revision. Separately, a systematic literature review in the PubMed, EMBASE, and Cochrane databases was performed. A total of 705 male and 158 female patients were included in this retrospective study. 71.1% of men and 52.5% of women sustained a sports-related rupture (p < .001), with sport involvement demonstrating a positive correlation with revision rate (coefficient = 0.09, p = .02). A total of 21 studies with 250,907 patients (87,514 male, 35,792 female) were included in the systematic review. All studies revealed an increased incidence of ATR in men. Functional outcomes were worse in women, and female sex was an independent risk factor for postoperative complications and need for revision surgery. This study demonstrated a higher incidence of sports-related ATR in men than women, likely related to their higher ball sport participation. Although the retrospective analysis did not find a significant difference in complication or revision rates, the systematic review demonstrates poorer functional outcomes, with increased likelihood for postoperative complication and revision surgery in women as compared to men.
Collapse
Affiliation(s)
- Hayden Hartman
- DeBusk College of Osteopathic Medicine, Lincoln Memorial University, Knoxville, TN.
| | - Alexis Cacace
- Foot and Ankle Research and Innovation Lab (FARIL), Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Hadley Leatherman
- Foot and Ankle Research and Innovation Lab (FARIL), Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Soheil Ashkani-Esfahani
- Foot and Ankle Research and Innovation Lab (FARIL), Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Foot and Ankle Center, Department of Orthopaedic Surgery, Massachusetts General Hospital, Newton Wellesley Hospital, Harvard Medical School, Boston, MA
| | - Daniel Guss
- Foot and Ankle Research and Innovation Lab (FARIL), Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Foot and Ankle Center, Department of Orthopaedic Surgery, Massachusetts General Hospital, Newton Wellesley Hospital, Harvard Medical School, Boston, MA
| | - Gregory Waryasz
- Foot and Ankle Research and Innovation Lab (FARIL), Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Foot and Ankle Center, Department of Orthopaedic Surgery, Massachusetts General Hospital, Newton Wellesley Hospital, Harvard Medical School, Boston, MA
| | - Christopher W DiGiovanni
- Foot and Ankle Research and Innovation Lab (FARIL), Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Foot and Ankle Center, Department of Orthopaedic Surgery, Massachusetts General Hospital, Newton Wellesley Hospital, Harvard Medical School, Boston, MA
| | - Arianna L Gianakos
- Foot and Ankle Research and Innovation Lab (FARIL), Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA; Department of Orthopaedic Surgery, Yale Medicine, Orthopaedics and Rehabilitation, New Haven, CT
| |
Collapse
|
2
|
Larsson E, Nilsson N, Walstern J, Brorsson A, Helander KN. Females present larger deficit in heel-rise height at 3 months following an Achilles tendon rupture compared with males. Knee Surg Sports Traumatol Arthrosc 2024. [PMID: 38651585 DOI: 10.1002/ksa.12208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 03/28/2024] [Accepted: 04/09/2024] [Indexed: 04/25/2024]
Abstract
PURPOSE There is a lack of knowledge concerning differences between females and males in the early stages after an acute Achilles tendon rupture. This article aims to explore the different factors affecting early function after an Achilles tendon rupture with a validated test battery that includes functional tests, clinical measurements and patient-reported outcome at a 3-month follow-up analysis of a larger prospective study. METHODS This study was part of the DUSTAR-study (Diagnostic UltraSonography for the choice of Treatment of acute Achilles tendon Rupture) where the main aim was to evaluate if an acute ultrasonography could determine which patients, with an Achilles tendon rupture, should be treated surgically or nonsurgically. At the 3-month follow-up, the results between males and females were compared. RESULTS One hundred and twenty-seven patients were included at the 3-month follow-up; of these, 102 (80%) were males and 25 (20%) were females. Amongst the females, 11 (44%) were able to perform a single leg heel-rise compared to 48 (47%) of the males; however, the difference was not statistically significant. There was no difference between the sexes in the frequency of completing a single-leg heel-rise at 3 months after injury; however, there were statistically significant differences between the groups when comparing Limb Symmetry Index (LSI) of heel-rise height and heel-rise work. The females had a median heel-rise height LSI/median heel-rise work LSI of 45%/14% compared to males who reached a level of 57%/23% (p = 0.006/p = 0.010). At the 3-month follow-up, the median (range) Achilles tendon Total Rupture Score (ATRS) reported by females was 28.5 (8-51), which had a nonsignificant difference compared to males who reported a median (range) ATRS of 30 (1-86). CONCLUSION The risk of reduced heel-rise height and worse heel-rise work 3 months after an acute Achilles tendon rupture increases by being a female. Through this knowledge, we highlighted the importance of an individualised treatment for acute Achilles tendon ruptures with better outcome for both males and females. LEVEL OF EVIDENCE Level II.
Collapse
Affiliation(s)
- Elin Larsson
- Department of Orthopaedics, Institute of Clinical Science at Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
- Department of Orthopaedics, Sahlgrenska University Hospital/Mölndal, Gothenburg, Sweden
| | - Niklas Nilsson
- Department of Orthopaedics, Institute of Clinical Science at Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - Julia Walstern
- Department of Orthopaedics, Institute of Clinical Science at Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
| | - Annelie Brorsson
- Department of Orthopaedics, Institute of Clinical Science at Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
- IFK Kliniken Rehab, Gothenburg, Sweden
| | - Katarina Nilsson Helander
- Department of Orthopaedics, Institute of Clinical Science at Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden
- Department of Orthopaedics, Sahlgrenska University Hospital/Mölndal, Gothenburg, Sweden
| |
Collapse
|
3
|
Yang S, Shi W, Yan W, Ao Y, Guo Q, Yang Y. Comparison between primary repair and augmented repair with gastrocnemius turn-down flap for acute Achilles tendon rupture: a retrospective study with minimum 2-year follow-up. BMC Musculoskelet Disord 2023; 24:163. [PMID: 36871017 PMCID: PMC9985193 DOI: 10.1186/s12891-023-06260-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: 09/27/2022] [Accepted: 02/21/2023] [Indexed: 03/06/2023] Open
Abstract
BACKGROUND To explore and compare the clinical outcomes in patients undergoing primary repair versus augmented repair with a gastrocnemius turn-down flap for acute Achilles tendon rupture. METHODS From 2012 to 2018, the clinical data of 113 patients with acute Achilles tendon rupture who were treated with primary repair or augmented repair with a gastrocnemius turn-down flap by the same surgeon were retrospectively reviewed. The patients' preoperative and postoperative scores on the visual analog scale (VAS), American Orthopaedic Foot and Ankle Society Ankle⁃Hindfoot (AOFAS) score, the Victorian Institute of Sport Assessment⁃Achilles (VISA-A), the Achilles tendon total rupture score (ATRS), and the Tegner Activity Scale were examined and compared. The postoperative calf circumference was measured. A Biodex isokinetic dynamometer was used to evaluate the plantarflexion strength on both sides. The time to return to life and exercise as well as the strength deficits in both groups were recorded. Finally, the correlation analyses between patient characteristics and treatment details with clinical outcomes were conducted. RESULTS In total, 68 patients were included and completed the follow-up. The 42 and 26 patients who were treated with primary repair and augmented repair were assigned to group A and B, respectively. No serious postoperative complications were reported. No significant between-group differences in any outcomes were observed. It was found that female sex was correlated with poorer VISA-A score (P = 0.009), complete seal of paratenon was correlated with higher AOFAS score (P = 0.031), and short leg cast was correlated with higher ATRS score (P = 0.006). CONCLUSIONS Augmented repair with a gastrocnemius turn-down flap provided no advantage over primary repair for the treatment of acute Achilles tendon rupture. After surgical treatment, females tended to had poorer outcomes, while complete seal of paratenon and short leg cast contributed to better results. LEVEL OF EVIDENCE Cohort study; Level of evidence, 3.
Collapse
Affiliation(s)
- Shuai Yang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, 49 North Garden Road, Beijing, Haidian District, 100191, China
| | - Weili Shi
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, 49 North Garden Road, Beijing, Haidian District, 100191, China
| | - Wenqiang Yan
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, 49 North Garden Road, Beijing, Haidian District, 100191, China
| | - Yingfang Ao
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, 49 North Garden Road, Beijing, Haidian District, 100191, China
| | - Qinwei Guo
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, 49 North Garden Road, Beijing, Haidian District, 100191, China.
| | - Yuping Yang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing Key Laboratory of Sports Injuries, Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, 49 North Garden Road, Beijing, Haidian District, 100191, China.
| |
Collapse
|
4
|
Patel SH, Carroll CC. Impact of elevated serum advanced glycation end products and exercise on intact and injured murine tendons. Connect Tissue Res 2023; 64:161-174. [PMID: 36282002 PMCID: PMC9992287 DOI: 10.1080/03008207.2022.2135508] [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: 03/08/2022] [Accepted: 10/09/2022] [Indexed: 02/03/2023]
Abstract
OVERVIEW Delayed tendon healing is a significant clinical challenge for those with diabetes. We explored the role of advanced glycation end-products (AGEs), a protein modification present at elevated levels in serum of individuals with diabetes, on injured and intact tendons using a mouse model. Cell proliferation following tissue injury is a vital component of healing. Based on our previous work demonstrating that AGEs limit cell proliferation, we proposed that AGEs are responsible for the delayed healing process commonly observed in diabetic patients. Further, in pursuit of interventional strategies, we suggested that moderate treadmill exercise may support a healing environment in the presence of AGEs as exercise has been shown to stimulate cell proliferation in tendon tissue. MATERIALS AND METHODS Mice began receiving daily intraperitoneal injections of bovine serum albumin (BSA)-Control or AGE-BSA injections (200μg/ml) at 16-weeks of age. A tendon injury was created in the central third of both patellar tendons. Animals assigned to an exercise group began a moderate treadmill protocol one week following injury. The intact Achilles tendon and soleus muscle were also evaluated to assess the effect of BSA and AGE-BSA on un-injured muscle and tendon. RESULTS We demonstrate that our injection dosing and schedule lead to an increase in serum AGEs. Our findings imply that AGEs indeed modulate gene expression following a patellar tendon injury and have modest effects on gene expression in intact muscle and tendon. CONCLUSIONS While additional biomechanical analysis is warranted, these data suggest that elevated serum AGEs in persons with diabetes may impact tendon health.
Collapse
Affiliation(s)
- Shivam H. Patel
- Department of Health and Kinesiology, Purdue University, West Lafayette, IN
| | - Chad C. Carroll
- Department of Health and Kinesiology, Purdue University, West Lafayette, IN
| |
Collapse
|
5
|
Hansen MS, Bencke J, Kristensen MT, Kallemose T, Hölmich P, Barfod KW. Achilles tendon gait dynamics after rupture: A three-armed randomized controlled trial comparing an individualized treatment algorithm vs. operative or non-operative treatment. Foot Ankle Surg 2023; 29:143-150. [PMID: 36528540 DOI: 10.1016/j.fas.2022.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Individual treatment selection has been proposed as the key to optimized treatment. The purpose was to investigate if treatment selection using the individualized treatment algorithm Copenhagen Achilles Rupture Treatment Algorithm (CARTA) differs between patients treated as usual regarding gait dynamics and tendon elongation. METHODS The patients were randomized to one of three parallel groups: 1) intervention group: participants treated according to CARTA, 2) control group: participants treated non-operatively, 3) control group: participants treated operatively. The primary outcome was ankle peak power during push off during walking at 12 months. RESULTS 156 patients were assessed for eligibility. 21 were allocated to the intervention group, and 20 and 19 to the control groups. The results indicated no statistically significant differences between the intervention group and the control groups. CONCLUSIONS Individualized treatment selection based on CARTA did not demonstrate less affected gait dynamics or less tendon elongation than patients treated as usual.
Collapse
Affiliation(s)
- Maria Swennergren Hansen
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Department of Orthopedic Surgery, Copenhagen University Hospital Amager-Hvidovre, Denmark; Department of Physical and Occupational Therapy, Copenhagen University Hospital Amager-Hvidovre, Denmark; Physical Medicine & Rehabilitation Research-Copenhagen (PMR-C), Copenhagen University Hospital Amager-Hvidovre, Denmark.
| | - Jesper Bencke
- Human Movement Analysis Laboratory, Department of Orthopedic Surgery, Copenhagen University Hospital Amager-Hvidovre, Denmark.
| | - Morten Tange Kristensen
- Department of Physical and Occupational Therapy, Copenhagen University Hospital, Bispebjerg-Frederiksberg, Denmark; Department of Clinical Medicine, University of Copenhagen, Denmark.
| | - Thomas Kallemose
- Department of Clinical Research, Copenhagen University Hospital Amager-Hvidovre, Denmark.
| | - Per Hölmich
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Department of Orthopedic Surgery, Copenhagen University Hospital Amager-Hvidovre, Denmark.
| | - Kristoffer Weisskirchner Barfod
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Department of Orthopedic Surgery, Copenhagen University Hospital Amager-Hvidovre, Denmark.
| |
Collapse
|
6
|
Henriksen GJ, Cramer A, Hölmich P, Hansen MS, Hansen JK, Christensen M, Barfod KW. Treatment outcome at 1 year did not differ between use of cast or walker in the first 3 weeks after an acute Achilles tendon rupture. A registry study of 1304 patients from the Danish Achilles tendon database. Foot Ankle Surg 2023; 29:56-62. [PMID: 36163152 DOI: 10.1016/j.fas.2022.09.004] [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: 05/18/2022] [Revised: 09/08/2022] [Accepted: 09/14/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND The best choice of orthosis in the treatment of acute Achilles tendon rupture is still under debate. OBJECTIVE To investigate if choice of orthosis in the first 3 weeks of treatment affected patient reported outcome (Achilles tendon Total Rupture Score (ATRS)), tendon elongation (Achilles Tendon Resting Angle (ATRA) and Heel Rise Height (HRH)) and re-rupture. METHODS Registry study in the Danish Achilles tendon Database. Patients treated with cast and patients treated with walker in the first 3 weeks of treatment were compared using a linear mixed-effects model adjusted for potential confounders. RESULTS 1304 patients were included in the study. No clinically relevant difference was found: Adjusted mean difference (using walker the whole period as reference)(95% CI) ATRS after 1 year = 0.1(-3.0; 4.1), ATRS after 6 months = 2.0(-4.5; 5.8), ATRS after 2 years = 3.0(-0.7; 7.0), HRH difference = 0.6(-6.6; 8.2), ATRA difference = 0.03°(-1.5; 1.6), re-rupture(odds ratio) = 0.812(0.4; 1.61). CONCLUSION Patients treated with cast the first 3 weeks after acute Achilles tendon rupture did not have better treatment outcome than patients treated with walker.
Collapse
Affiliation(s)
- Guðrun Jóannesardóttir Henriksen
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Arthroscopic Center, Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark.
| | - Allan Cramer
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Arthroscopic Center, Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark
| | - Per Hölmich
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Arthroscopic Center, Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark
| | - Maria Swennergren Hansen
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Arthroscopic Center, Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark; Physical Medicine & Rehabilitation Research-Copenhagen (PMR-C), Department of Physical and Occupational Therapy, and Clinical Research Centre, Copenhagen University Hospital, Amager-Hvidovre, Denmark
| | - Jeanette Kaae Hansen
- Department of Physiotherapy and Occupational Therapy, Næstved-Slagelse-Ringsted Hospital, Denmark
| | - Marianne Christensen
- Department of Physiotherapy and Occupational Therapy; Interdiciplinary Orthopaedics, Aalborg University Hospital, Denmark
| | - Kristoffer Weisskirchner Barfod
- Sports Orthopedic Research Center - Copenhagen (SORC-C), Arthroscopic Center, Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark
| |
Collapse
|
7
|
Cramer A, Jacobsen NC, Hansen MS, Sandholdt H, Hölmich P, Barfod KW. Diabetes and treatment with orally administrated corticosteroids negatively affect treatment outcome at follow-up after acute Achilles tendon rupture. Knee Surg Sports Traumatol Arthrosc 2021; 29:1584-1592. [PMID: 33211215 DOI: 10.1007/s00167-020-06371-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/05/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE Studies investigating the influence of comorbidities on patient-reported outcomes after acute Achilles tendon ruptures (ATR) are lacking. In this study, the aim was to investigate the effect of comorbidity and medical treatment on the patient-reported outcome measure Achilles tendon total rupture score (ATRS). METHODS The study was performed as a registry study from the Danish Achilles tendon Database (DADB). In the DADB, ATRS was registered at baseline (prior to rupture), at 3-6 month, 1-year and 2-year follow-ups. The outcomes were ATRS at follow-up and the change in ATRS from baseline to follow-up. Variables of interest were diabetes, hypertension, rheumatic disease and treatment with orally administrated corticosteroids. Linear mixed-effects models including all follow-up time points in the same model were used adjusting for sex, age group, treatment (operative or non-operative) and the investigated comorbidities. RESULTS Data were collected from 2012 to 2019. Two thousand and four patients with ATR were included. Patients with the investigated comorbidities and treatment with orally administrated corticosteroid scored 10.6-19.1 points lower in mean ATRS at baseline (prior to rupture) compared to patients without the respective disease or treatment. At follow-up, patients with diabetes (mean difference, [95% CI]) (- 6.2, [- 11.7; - 0.8]; P = 0.03) and patients in treatment with orally administrated corticosteroids (- 10.9, [- 16.2; - 5.7]; P < 0.01) had a statistically significantly worse ATRS than patients without the respective disease. However, change in ATRS from baseline to follow-up was not affected. Hypertension and rheumatic disease did not affect ATRS at follow-up but had a positive effect on change in ATRS (4.3, [0.5; 8.1]; P = 0.03) and (12.0, [5.0; 19.9]; P < 0.01), respectively. No other statistically significant differences were found. CONCLUSION This study showed that patients with diabetes, hypertension, rheumatic disease and patients in treatment with orally administrated corticosteroids had a lower ATRS at baseline (prior to the rupture) when compared to patients without the respective disease or treatment. Diabetes and treatment with orally administrated corticosteroids did negatively affect ATRS at follow-up, but none of the investigated comorbidities or treatment with orally administrated corticosteroids did negatively affect change in ATRS from baseline to follow-up. LEVEL OF EVIDENCE Level III.
Collapse
Affiliation(s)
- Allan Cramer
- Department of Orthopedic Surgery, Sports Orthopedic Research Center-Copenhagen (SORC-C), Arthroscopic Center, Copenhagen University Hospital, Kettegård Allé 30, Amager-Hvidovre, 2650, Hvidovre, Denmark.
| | - Nanna Cecilie Jacobsen
- Department of Orthopedic Surgery, Sports Orthopedic Research Center-Copenhagen (SORC-C), Arthroscopic Center, Copenhagen University Hospital, Kettegård Allé 30, Amager-Hvidovre, 2650, Hvidovre, Denmark
| | - Maria Swennergren Hansen
- Department of Orthopedic Surgery, Sports Orthopedic Research Center-Copenhagen (SORC-C), Arthroscopic Center, Copenhagen University Hospital, Kettegård Allé 30, Amager-Hvidovre, 2650, Hvidovre, Denmark.,Department of Physiotherapy, Physical Medicine and Rehabilitation Research-Copenhagen (PMR-C), Copenhagen University Hospital, Amager-Hvidovre, Hvidovre, Denmark
| | - Håkon Sandholdt
- Clinical Research Center, Copenhagen University Hospital, Hvidovre, Denmark
| | - Per Hölmich
- Department of Orthopedic Surgery, Sports Orthopedic Research Center-Copenhagen (SORC-C), Arthroscopic Center, Copenhagen University Hospital, Kettegård Allé 30, Amager-Hvidovre, 2650, Hvidovre, Denmark
| | - Kristoffer Weisskirchner Barfod
- Department of Orthopedic Surgery, Sports Orthopedic Research Center-Copenhagen (SORC-C), Arthroscopic Center, Copenhagen University Hospital, Kettegård Allé 30, Amager-Hvidovre, 2650, Hvidovre, Denmark
| |
Collapse
|