an imbalance in strength from lateral and medial quadriceps is what i was getting at aka chondromalacia. thats why i asked about different foot positions and if the crunch happened then too.
Particularly glucosamine in the sulfate form. I think it was 6 years of cheering that did my knees in. You shouldnt be able to hear a 20 yo coming by the sound of grinding popping knees. LOL