[slodave]

Hmm, maybe I can share my thoughts...

I tore all the ligaments in my right shoulder about 4 years ago. My collar bone and shoulder bone are no longer connected. Due to the degree of the injury, surgery was elective. Today, my right arm hangs about half an inch lower than my left. Day to day, it does not bother me, but there are certain positions and activities - such as CV joint replacement and other under car work, that take their toll and I have to take frequent breaks. Those two bones are also now rubbing against each other, leading to issues later in life...

So, I read that he is young and he does not have ins., but I would at least recommend (stress) that he consult an orthopedist like Noah930 suggested. Your friend should know what exactly is wrong and the suggested treatments.