I underwent chondroplasty on Oct 6th this year for several knee pain, to where I could not spin on stationary bike or do yoga or climb downstairs without pain. At arthroscopy, my doc found a tiny meniscal tear, small osteophyte. After surgery I felt great, and was told to resume activities as tolerated. Although it was slightly swollen I started doing elliptical machine, and gradually went back to spin. I have run a couple of time but 6 weeks into it, after a 3 mile run, both knees have started hurting and feeling like they are locking up. I have minimal tightness and no swelling and can do yoga but not much else. I am afraid to do anything more strenuous now. Any advice as to what to do? I have done some long distance running but would very much just want to get back to working out regularly and running 2-3 miles few times a week without pain or consequences! Thx