Return to sports after anterior cruciate ligament injury: neither surgery nor rehabilitation alone guarantees success—it is much more complicated

[...]a systematic review from 2014 1 found weak evidence that higher quadriceps strength, less effusion, less pain, greater tibial rotation, higher Marx Activity score, higher athletic confidence, higher preoperative knee self-efficacy, lower kinesiophobia and higher preoperative self-motivation were associated with returning to sport after ACL reconstruction. Web-based online registry studies seem to be the future in order to collect and manage the vast volume of data; will we possibly see such data added to our knee ligament registries in the future? [...]evidence is found regarding if, when and how to successfully and safely return to sports after an ACL injury, it seems necessary that surgery and rehabilitation be individualised.