Hi guys, Left knee been hurting for a few years now when I'm in a deep squat position (past parallel). Finally decided to go see a PT since I got insurance now and they're suspecting my left VMO in the quad is delayed when contracting, which causes the knee cap to shift out slightly. It may also be from my flat foot and extra pronated left feet, my knees also appear to collapse in slightly when I squat down. Still didn't really find out the main cause of the problem. Anyways, PT recommended some exercise to strengthen my VMO to create some balance and hopefully bring me back to a normal state. Has anybody else here experienced this problem? If so, how long did it take you to heal before you can squat again? I can't even deadlift right now, nothing that works out the quads.