I didn't mention this before because it got better but last spring, before I fell and tore my rotator cuff, I stepped in a chipmunk hole and hyperextended my knee. It hurt for a while but within a couple of weeks I was running on it again. I had a couple of "flare ups" but usually they were brought on when I didn't pay attention and hyperextended my knee again. It seems to slip back easily. Well, after weeks of inactivity, I started walking in the mall with my weight for my RSD and my knee started acting up again. I am down to 16 PT visits and I mentioned it to my orthopedist today. He feels there is an effusion and on xray the knee cap seems to slip out of the grove when my knee is flexed. My goal, knee strengthening exercises. I don't think that there is anything that needs surgery, although he mentioned a torn miniscus. What are some good knee strengthening exercises for those of you with a history of knee problems. I see the PT for my hand and shoulder tomorrow but can't get a knee eval. from the PT until next week. 

