i am young (in my 30s) and I have arthritis in my right shoulder as a result of a traumatic incident in my teens.... anyway it's making it difficult to run fast due to the pain and stiffness. i understand that they now have shoulder resufacing similar to hip resurfacing. my quesiton is, could i run with a resurfaced shoulder? i know they forbid people with knee and hip replacements to run due to the impace but i'm hoping a replaced shoulder would be OK...