My inner knees, beside my knee cap has been hurting for a while now. I do gymnastics. The pain hurts a lot right when my knee is straightening. When the knee is about to be extended, I get this sharp pain. Like I said it hurts to do kicks, walk with straight knee on tip toes, and running, and landing on one leg. I have been trying to strenghthen my butt and the muscles around the knee area. It doesn t seem to work. My right knee started to hurt very badly but then switched over to my left knee. I still practice but it really hurts. Their is no swelling or tenderness around the knee. Can you help? FYI: I may have forgotten to mention some things, sorry.