safetyal

One of the instructors where I train, does it occasionally. Just like NewEnglands said, it was done during a 6 " leg raise.

Just a thought. You may want to consider swimming if possible or even weight lifting where you can exert more influence over the exact exercises you perform, skipping those that cause too much discomfort. Either way good luck on whatever you decide to do.

Hello, long time lurker here and I may be a little late to the party. Hopefully Andy still comes back. One thing I noticed in your post was that you said you practice on a squash court. I am not sure if they put pads out, but if they don't, you may not have enough foot support. Try looking up Runner's Knee. Some of the symptoms you describe are reminiscent of that particular ailment. I know this from experience.