[1] Sanders TL, Maradit Kremers H, Bryan AJ, Larson DR, Dahm DL, Levy BA, et al. Incidence of anterior cruciate ligament tears and reconstruction: A 21-year population-based study. Am J Sports Med 2016;44:1502–7. https://doi.org/10.1177/0363546516629944.
[2] Shea KG, Carey JL, Richmond J, Sandmeier R, Pitts RT, Polousky JD, et al. The American Academy of Orthopaedic Surgeons evidence-based guideline on management of anterior cruciate ligament injuries. J Bone Joint Surg Am 2015;97:672–4. https://doi.org/10.2106/JBJS.N.01257.
[3] Ardern CL, Taylor NF, Feller JA, Whitehead TS, Webster KE. Psychological responses matter in returning to preinjury level of sport after anterior cruciate ligament reconstruction surgery. Am J Sports Med 2013;41:1549–58. https://doi.org/10.1177/0363546513489284.
[4] Gokeler A, Dingenen B, Mouton C, Seil R. Clinical course and recommendations for patients after anterior cruciate ligament injury and subsequent reconstruction: A narrative review. EFORT Open Rev 2017;2:410–20. https://doi.org/10.1302/2058-5241.2.170011.
[5] Wilk KE, Arrigo CA. Preoperative Phase in the Rehabilitation of the Patient Undergoing Anterior Cruciate Ligament Reconstruction. Oper Tech Sports Med 2016;24:12–20. https://doi.org/10.1053/j.otsm.2015.10.003.
[6] Alshewaier S, Yeowell G, Fatoye F. The effectiveness of pre-operative exercise physiotherapy rehabilitation on the outcomes of treatment following anterior cruciate ligament injury: A systematic review. Clin Rehabil 2017;31:34–44. https://doi.org/10.1177/0269215516628617.
[7] Ardern CL, Glasgow P, Schneiders A, Witvrouw E, Clarsen B, Cools A, et al. 2016 Consensus statement on return to sport from the First World Congress in Sports Physical Therapy, Bern. Br J Sports Med 2016;50:853–64. https://doi.org/10.1136/bjsports-2016-096278.
[8] Ardern CL, Webster KE, Taylor NF, Feller JA. Return to sport following anterior cruciate ligament reconstruction surgery: A systematic review and meta-analysis of the state of play. Br J Sports Med 2011;45:596–606. https://doi.org/10.1136/bjsm.2010.076364.
[9] Dingenen B, Gokeler A. Optimization of the Return-to-Sport Paradigm After Anterior Cruciate Ligament Reconstruction: A Critical Step Back to Move Forward. Sport Med 2017;47:1487–500. https://doi.org/10.1007/s40279-017-0674-6.
[10] Webster KE, Feller JA. Expectations for Return to Preinjury Sport Before and After Anterior Cruciate Ligament Reconstruction. Am J Sports Med 2019;47:578–83. https://doi.org/10.1177/0363546518819454.
[11] Christino MA, Fleming BC, Machan JT, Shalvoy RM. Psychological Factors Associated With Anterior Cruciate Ligament Reconstruction Recovery. Orthop J Sport Med 2016;4:2325967116638341. https://doi.org/10.1177/2325967116638341.
[12] Ardern CL, Österberg A, Tagesson S, Gauffin H, Webster KE, Kvist J. The impact of psychological readiness to return to sport and recreational activities after anterior cruciate ligament reconstruction. Br J Sports Med 2014;48:1613–9. https://doi.org/10.1136/bjsports-2014-093842.
[13] Müller U, Krüger-Franke M, Schmidt M, Rosemeyer B. Predictive parameters for return to pre-injury level of sport 6 months following anterior cruciate ligament reconstruction surgery. Knee Surgery, Sport Traumatol Arthrosc 2015;23:3623–31. https://doi.org/10.1007/s00167-014-3261-5.
[14] Brand E, Nyland J. Patient outcomes following anterior cruciate ligament reconstruction: The influence of psychological factors. Orthopedics 2009;32:335. https://doi.org/10.3928/01477447-20090502-01.
[15] Ardern CL, Taylor NF, Feller JA, Webster KE. A systematic review of the psychological factors associated with returning to sport following injury. Br J Sports Med 2013;47:1120–6. https://doi.org/10.1136/bjsports-2012-091203.
[16] Everhart JS, Best TM, Flanigan DC. Psychological predictors of anterior cruciate ligament reconstruction outcomes: a systematic review. Knee Surgery, Sport Traumatol Arthrosc 2015;23:752–62. https://doi.org/10.1007/s00167-013-2699-1.
[17] Te Wierike SCM, Van Der Sluis A, Van Den Akker-Scheek I, Elferink-Gemser MT, Visscher C. Psychosocial factors influencing the recovery of athletes with anterior cruciate ligament injury: A systematic review. Scand J Med Sci Sport 2013;23:527–40. https://doi.org/10.1111/sms.12010
[18] Webster KE, McPherson AL, Hewett TE, Feller JA. Factors Associated With a Return to Preinjury Level of Sport Performance After Anterior Cruciate Ligament Reconstruction Surgery. Am J Sports Med 2019;47:2557–62. https://doi.org/10.1177/0363546519865537.
[19] Coronado RA, Bird ML, Van Hoy EE, Huston LJ, Spindler KP, Archer KR. Do psychosocial interventions improve rehabilitation outcomes after anterior cruciate ligament reconstruction? A systematic review. Clin Rehabil 2018;32:287–98. https://doi.org/10.1177/0269215517728562.
[20] Webster KE, Feller JA. A research update on the state of play for return to sport after anterior cruciate ligament reconstruction. J Orthop Traumatol 2019;20. https://doi.org/10.1186/s10195-018-0516-9.
[21] Moher D, Liberati A, Tetzlaff J, Altman DG. Preferred Reporting Items for Systematic Reviews and Meta-Analyses: The PRISMA Statement. PLoS Med 2009;6:e1000097. https://doi.org/10.1371/journal.pmed.1000097.
[22] Guyatt GH, Oxman AD, Vist GE, Kunz R, Falck-Ytter Y, Alonso-Coello P, et al. GRADE: An emerging consensus on rating quality of evidence and strength of recommendations. Chinese J Evidence-Based Med 2009;9:8–11. https://doi.org/10.1136/bmj.39489.470347.AD
[23] Schünemann H, Brożek J, Guyatt G, Oxman A. GRADE handbook for grading the quality of evidence and the strength of recommendations. GRADE Work. GR 2013
[24] Sterne JAC, Savović J, Page MJ, Elbers RG, Blencowe NS, Boutron I, et al. RoB 2: A revised tool for assessing risk of bias in randomised trials. BMJ 2019;366. https://doi.org/10.1136/bmj.l4898.
[25] McHugh ML. Interrater reliability: The kappa statistic. Biochem Medica 2012;22:276–82. https://doi.org/10.11613/bm.2012.031.
[26] Page, MJ, Higgins JPT SJ. Chapter 13: Assessing risk of bias due to missing results in a synthesis. In Higgins JPT, Thomas J, Chandler J, Cumpston M, Li T, Page MJ, Welch VA (editors). In: Cochrane Handbook for Systematic Reviews of Interventions Versio 6.0 (Updated July 2019). Available from www.training.cochrane.org/handbook.
[27] Shaarani SR, O’Hare C, Quinn A, Moyna N, Moran R, O’Byrne JM. Effect of prehabilitation on the outcome of anterior cruciate ligament reconstruction. Am J Sports Med 2013;41:2117–27. https://doi.org/10.1177/0363546513493594.
[28] Kim DK, Hwang JH, Park WH. Effects of 4 weeks preoperative exercise on knee extensor strength after anterior cruciate ligament reconstruction. J Phys Ther Sci 2015;27:2693–6. https://doi.org/10.1589/jpts.27.2693.
[29] Wallace BC, Dahabreh IJ, Trikalinos TA, Lau J, Trow P, Schmid CH. Closing the gap between methodologists and end-users: R as a computational back-end. J Stat Softw 2012;49:1–15. https://doi.org/10.18637/jss.v049.i05.
[30] Cohen J. Statistical Power Analysis for the Behavioral Sciences. 2nd Editio. Routledge; 1988. https://doi.org/10.4324/9780203771587.
[31] Hartigan E, Axe MJ, Snyder-Mackler L. Perturbation training prior to ACL reconstruction improves gait asymmetries in non-copers. J Orthop Res 2009;27:724–9. https://doi.org/10.1002/jor.20754.
[32] Moseley AM, Rahman P, Wells GA, Zadro JR, Sherrington C, Toupin-April K, et al. Agreement between the Cochrane risk of bias tool and Physiotherapy Evidence Database (PEDro) scale: A meta-epidemiological study of randomized controlled trials of physical therapy interventions. PLoS One 2019;14:e0222770. https://doi.org/10.1371/journal.pone.0222770.
[33] Failla MJ, Logerstedt DS, Grindem H, Axe MJ, Risberg MA, Engebretsen L, et al. Does Extended Preoperative Rehabilitation Influence Outcomes 2 Years after ACL Reconstruction? A Comparative Effectiveness Study between the MOON and Delaware-Oslo ACL Cohorts: Am J Sports Med 2016;44:2608–14. https://doi.org/10.1177/0363546516652594.
[34] Grindem H, Granan LP, Risberg MA, Engebretsen L, Snyder-Mackler L, Eitzen I. How does a combined preoperative and postoperative rehabilitation programme influence the outcome of ACL reconstruction 2 years after surgery? A comparison between patients in the Delaware-Oslo ACL Cohort and the Norwegian National Knee Ligament Registry. Br J Sports Med 2015;49:385–9. https://doi.org/10.1136/bjsports-2014-093891.
[35] Logerstedt D, Lynch A, Axe MJ, Snyder-Mackler L. Symmetry restoration and functional recovery before and after anterior cruciate ligament reconstruction. Knee Surgery, Sport Traumatol Arthrosc 2013;21:859–68. https://doi.org/10.1007/s00167-012-1929-2.
[36] Sterne JAC, Hernán MA, McAleenan A, Reeves BC HJ. Chapter 25: Assessing risk of bias in a non-randomized study | Cochrane Training. Higgins JPT, Thomas J, Chandl. J, Cumpst. M, Li T, Page MJ, Welch VA (editors). In: Cochrane Handbook for Systeamtic Reviews of Interventions Version 6.0 (Updated July 2019). Available from www.training.cochrane.org/handbook
[37] Flanigan DC, Everhart JS, Pedroza A, Smith T, Kaeding CC. Fear of reinjury (Kinesiophobia) and persistent knee symptoms are common factors for lack of return to sport after anterior cruciate ligament reconstruction. Arthrosc - J Arthrosc Relat Surg 2013;29:1322–9. https://doi.org/10.1016/j.arthro.2013.05.015.
[38] Kvist J, Ek A, Sporrstedt K, Good L. Fear of re-injury: A hindrance for returning to sports after anterior cruciate ligament reconstruction. Knee Surgery, Sport Traumatol Arthrosc 2005;13:393–7. https://doi.org/10.1007/s00167-004-0591-8.
[39] Edwards PK, Ebert JR, Joss B, Ackland T, Annear P, Buelow JU, et al. Patient Characteristics and Predictors of Return to Sport at 12 Months After Anterior Cruciate Ligament Reconstruction: The Importance of Patient Age and Postoperative Rehabilitation. Orthop J Sport Med 2018;6. https://doi.org/10.1177/2325967118797575.
[40] Webster KE, Feller JA, Lambros C. Development and preliminary validation of a scale to measure the psychological impact of returning to sport following anterior cruciate ligament reconstruction surgery. Phys Ther Sport 2008;9:9–15. https://doi.org/10.1016/j.ptsp.2007.09.003.
[41] Langford JL, Webster KE, Feller JA. A prospective longitudinal study to assess psychological changes following anterior cruciate ligament reconstruction surgery. Br J Sports Med 2009;43:377–81. https://doi.org/10.1136/bjsm.2007.044818.
[42] Ardern CL, Taylor NF, Feller JA, Webster KE. Fifty-five per cent return to competitive sport following anterior cruciate ligament reconstruction surgery: An updated systematic review and meta-analysis including aspects of physical functioning and contextual factors. Br J Sports Med 2014;48:1543–52. https://doi.org/10.1136/bjsports-2013-093398.
[43] Gobbi A, Francisco R. Factors affecting return to sports after anterior cruciate ligament reconstruction with patellar tendon and hamstring graft: A prospective clinical investigation. Knee Surgery, Sport Traumatol Arthrosc 2006;14:1021–8. https://doi.org/10.1007/s00167-006-0050-9.
[44] Thomeé P, Währborg P, Börjesson M, Thomeé R, Eriksson BI, Karlsson J. Self-efficacy of knee function as a pre-operative predictor of outcome 1 year after anterior cruciate ligament reconstruction. Knee Surgery, Sport Traumatol Arthrosc 2008;16:118–27. https://doi.org/10.1007/s00167-007-0433-6.
[45] Culvenor A, Crossley K, Kvist J, McPhail S. Functional recovery 1-year post-ACL reconstruction predicts future quality Adjusted Life Years (QALY) in 3,187 patients. J Sci Med Sport 2019;22:S57. https://doi.org/10.1016/j.jsams.2019.08.252.
[46] Lynch AD, Logerstedt DS, Grindem H, Eitzen I, Hicks GE, Axe MJ, et al. Consensus criteria for defining “successful outcome” after ACL injury and reconstruction: A Delaware-Oslo ACL cohort investigation. Br J Sports Med 2015;49:335–42. https://doi.org/10.1136/bjsports-2013-092299.
[47] Grindem H, Snyder-Mackler L, Moksnes H, Engebretsen L, Risberg MA. Simple decision rules can reduce reinjury risk by 84% after ACL reconstruction: The Delaware-Oslo ACL cohort study. Br J Sports Med 2016;50:804–8. https://doi.org/10.1136/bjsports-2016-096031.
[48] Ebert JR, Webster KE, Edwards PK, Joss BK, D’alessandro P, Janes G, et al. Current perspectives of Australian therapists on rehabilitation and return to sport after anterior cruciate ligament reconstruction: A survey 2019. https://doi.org/10.1016/j.ptsp.2018.12.004.
[49] Ebert JR, Webster KE, Edwards PK, Joss BK, D’Alessandro P, Janes G, et al. Current Perspectives of the Australian Knee Society on Rehabilitation and Return to Sport After Anterior Cruciate Ligament Reconstruction. J Sport Rehabil 2019;1:1–6. https://doi.org/10.1123/jsr.2019-0291.
[50] Nagelli C V., Hewett TE. Should Return to Sport be Delayed Until 2 Years After Anterior Cruciate Ligament Reconstruction? Biological and Functional Considerations. Sport Med 2017;47:221–32. https://doi.org/10.1007/s40279-016-0584-z.