1 year ago i rotated 90 degrees without my knee. I "shredded my patella tendon in my right knee"(that is a quote from my surgeon after he opened me up). They did a major reconstruction and fixed it. I was finally able to go to Physical therapy last november and continued until my benefits ran out in february. Other than PT i did nothing physical for 10 months. I am currently working out at a gym at our local community college. I have started gaining back strength in my upper body and my left leg but my right quad is still really weak. I do one leg squats, and tried doing a leg extension machine but i can't even lift the 10 pound plate and that is the lightest it goes. I ride the exercise bikes and run on an elliptical machine which helps my endurance but not much for my strength. Any help on exercises i can try would be really helpful.