I am 17 and have had debilitating knee pain for 3 months that has taken me from a super active athlete to a depressed teenager. My MRI and X-rays are clean, cortisone shots didn't provide any relief, and my doctors have said anxiety could be the primary cause. Every time walk or stand it feels like my muscles and tendons are all pulling wrong and I can't stand correctly. I feel lost in the pain and can't see the light at the end of the tunnel. Could this all be TMS? Has anyone heard of anything similar?