question: Broad question concerning my knees. 52 years old, 6 3 240, athletic. Stepped in a hole in yard, knee went left, body went other way. Didn t immediately hurt, not even for a week, then suddenly it has begun to be very painful,, lost full range of motion, can t run, stiff if I sit for too long, can t prop it across other leg, outside of it is tender, have a difficult time even using it to get up from a chair. Feels as if it could give out going up or down stairs, and even walking. Suggestions or comments welcome. Eric , email: YYYY@YYYY