The rationale for return to play based on achieving functional criteria was based on one low strength study.11 This study reported similar potential return to pre-injury sport levels in those who attempted to return before 12 months relative to those who returned after 12 months.
Potential Harms of Implementation
As individuals heal and recover at different rates and each injury has its own unique circumstances, it is difficult to assign a specific endpoint that would favor return to sport. Each patient should be treated individually and functionally advanced to the level of their ability. Premature return to full activity may cause injury to a reconstructed ligament, surrounding structures, or the contralateral knee. Early return in those individuals who elect non-operative management may lead to further injury of surrounding tissues and further decline. Current evidence is lacking as to the long-term consequences of premature return to sport on joint homeostasis, dynamic function, and risk of secondary injury.
Future research is needed to identify the functional deficits that are associated with increased second injury risk and reduced long term outcomes. Future investigations may assess more directly individual graft healing times, alternative therapeutic exercises, changes in frequency or duration to individual programs, platelet rich plasma treatments, genetic markers/gene therapy.
- (104) Shelbourne KD, Gray T, Haro M. Incidence of subsequent injury to either knee within 5 years after anterior cruciate ligament reconstruction with patellar tendon autograft. Am J Sports Med 2009;37:246-251.
- (11) Ardern CL, Taylor NF, Feller JA, Webster KE. Return-to-sport outcomes at 2 to 7 years after anterior cruciate ligament reconstruction surgery. Am J Sports Med 2012;40:41-48.
- (37) Glasgow SG, Gabriel JP, Sapega AA, Glasgow MT, Torg JS. The effect of early versus late return to vigorous activities on the outcome of anterior cruciate ligament reconstruction. Am J Sports Med 1993;21:243-248.