i am riding this season with a torn meniscus in my left knee, against the advise of my orthopedic dr. of all of the things that aggravate my knee, snowboarding surprisingly does not seem like one of them. it hurts me more to get in and out of my car, and going down stairs. i have been wearing a level 1 (non-velcro) knee brace which helps while riding. i even fell flat on my knee caps last week with no real lasting problems. although when i get my surgery after the season this may be screwing up my meniscus a bit, the pain is no worse from riding. so ride on brother. ride on.