When doing squats I suffer from valgus colapse and on the last day of our camping vacation I busted a right knee. Not sure what happened, but something between getting up to fast and rotating it.
Anyway – I limp now … and it hurts … and I can’t move that fast. Not to mention not doing squats :(. Solving the problem with a lot of ice and horse cream, but I’m looking into solutions to the problem.
Found a great tutorial with workouts.