I have a fifteen year old son who is very active and was just diagnosed with OCD mid-track season. Track is something he just started this spring. He is now being advised to cease all activities for the next several months, including golf, caddying and hockey, which activities have not caused him any great discomfort? Would these activities commonly be excluded. Also, he has had some giving way in the past in the knee, although not regularly. Does this indicate surgical involvement may be necessary?