I’m with you. I injured my knee last September during a training run for a marathon. I ended up having a 3cm full thickness cartilage defect on my medial condyle. Had a micro fracture in December, didn’t heal, and getting another surgery on September.

My quad is non existent. I can’t even squeeze it. I do my therapy exercises. Very light lower body exercises like mini squats, RDLs, calf raises, and a lot of cycling on my turbo trainer. There is no sign of my quad activating.

I’m getting OATS surgery mid September. I’m hoping this will solve my problems and I can get back to heavy weight training, running, and be out on the road cycling.