Mid 50's male. Long time distance runner. Gradual onset of pain three days after weekend yard work. No precipitating event. (Ortho guy says he hears this a lot in guys my age) Diagnosis after MRI of Torn Medial Meniscus. Surgeon wants to remove damaged part of meniscus which he tells me is in the area without blood flow. There was also a mention of arthritis. When I pushed for more information he said "arthritis consistent with your age". Don't quite what know what means. Anyway, here the questions. If there's no blood in the damaged part of my meniscus, why do I swell after leg strengthening exercises. I have pain in the knee when twisting the joint, even when simply crossing my injured leg on the other. However, I can run pain free as long get a secure foot plant and I don't twist the knee. Is this consistent with a simple Meniscus tear? The joint itself doesn't seem "right". As though the parts aren't quite fitting together properly. Sorry to bug you about this, but my surgeon just keeps telling me that "it's a simple meniscus tear and if there's more, he'll find it during surgery". I'm thinking that if I can strengthen the surrounding muscles, then I don't need surgery for a simple tear. Based on what I've written here, can you add your educated guess? I know that you can't diagnose, just looking for some educated guessing.