Hi dr. my right knee is giving me hell. after 6 minor surgeries on the cartridge and 1 for torn acl's over the 12 years it is swollen most of the time. getting up there's a sharp pain on the side and it gives way. feels like knife inside while walkin?

Arthritis: After all those injuries and operations you undoubtedly have some arthritis. You need to see an orthopedic surgeon about treatment until such time as you may need joint replacement.

Arthritis : There is likely post traumatic arthritis from your injuries and surgeries. This can be confirmed with a weight bearing xray. There can be effective no operable options including injections if that is the case . See an orthopedic surgeon that specializes in knees for options.