If it gave way I would bank on ACL, that is what really holds the knee together, with out it you have no real stability. How is it going down stairs? If you are completely solid going down stairs I am wrong, but if you feel unstable going down stairs I would throw most my $ on ACL (having blown 2). I did my second wakeboarding and thought it was just a sprain, then I was walking down stairs and it just gave way, that was when I knew what I had really done. One way to check is get someone you trust, you lie on your back with both legs streched out and relaxed, have the person put one hand on top of your upper leg (just above the knee) and the other hand on the back of your lower leg (below the knee) and try and move the lower up in the air holding the upper leg down (you stay relaxed). This is a gentle motion as to NOT incurr any further injury. Have them do that to both legs, with a general ACL tear there is a noticable difference in resistance. My dad had watched my doctor do that same thing on my first, and after my second giving way I had my old man try it and he felt a difference instantly, which was bad news! This however is only for your knowlege as whatever this tells you, you should still go see a specialist! (Message edited by holiday13 on June 05, 2006)
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