If you've undergone ACL reconstruction and still can't fully extend your knee weeks after surgery — despite doing the physical therapy, following the protocol, and doing everything right — you may be dealing with a cyclops lesion.

If you have been dealing with anterior interval scarring — whether following ACL reconstruction, a tibial plateau fracture repair, or another knee procedure — you already know that the frustration is not just physical.

There is a particular frustration in feeling pain at the back of your knee, especially when you cannot fully bend or extend without that deep, aching pinch. You may have been told to rest, apply ice, and do some generic stretching.

Living with a knee that will not fully straighten changes more than your range of motion. It reshapes how you walk, how you sleep, how you climb stairs, and eventually how you think about your own body.