My left leg went 90 degrees the wrong way and my kneecap wasn't where it shouldof been. I ruprtured my ACL, PCL Cruciate ligaments and Medial ligaments. Fun huh?
I've had a weak knee for years but i broke it 18 months ago and was putting off surgery because i didn't want to have to rely on crutches/other people all the time. Low and behold im in that position anyway(and i still havent had surgery).