After ACL reconstruction, only 23% of patients passed return-to-sport (RTS) test batteries. This is the conclusion of a systematic review that analysed how many athletes pass return-to-sport testing and whether passing the tests results in lower rates of subsequent knee injury.

Most studies included in the review found no decrease in subsequent knee or anterior cruciate ligament (ACL) injuries after passing RTS testing. Successful RTS testing did, however, reduce the risk of subsequent graft rupture. Surprisingly, athletes who passed RTS testing had a higher risk of contralateral ACL injury.