The Risk of Re-Injury at Nine Months

There has been loads of loads of research done on this. For every month earlier than nine months the increase of a second ACL injury occurring increases quite significantly and depending on the paper that you read. There's also some great biomechanical work from ender king and colleagues at a sports entry through 2018 19 and 20. Even at nine months a lot of a lot of athletes that are trying to return back to sport biomechanically have not restored their strength qualities compared to healthy controls.