Ugh, that's a long time to have bursitis. I have, however, heard of it taking up to a year to get fully better. You should be at that point, right? hope so! What do you do to treat the bursitis (or did you do)? I know it is not feasible for everyone but a physical therapist would be great to see as they can help guide you on what types of exercise are best for your personal situation. But either way, stretching is important for all with bursitis no matter its location. That is gentle, slow stretching before starting. Sometimes I think it is trial and error to determine the best exercises for health benefit that don't cause your bursitis to flare. If it causes pain or flare up, then avoid that exercise. Knee extensions may be tricky but if you try it, I'd use very light weight obviously. Have you ever done swimming? I like that because it is weight bearing while being really gentle.