Form check, knees hurt at bottom of squat

[Tom Claussen]

This was the last recorded set I have. Next session went up to 250, and experienced pain in the left superior tibiofibular joint. Went down to 225 the next session, then 235 the session after. It is still sore as heck. Any form tweaks you see to alleviate this?

245squat - YouTube

[Mark Rippetoe]

I think it's the stupidass mask.