TR - no kidding? Can't help the sarcasm, but my post was asking about about other's experiences to better understand the range of rehab optionsm, not self-diagnose or prescribe.
BOF - Thanks, I have already ordered these.
CADad - Have been waiting for results of second opinion before replying. And the answer is: Sick Scapula Syndrom or gleno-humeral internal rotation deficit, or GIRD.
No growth plate separation or fracture. I was skeptical of the LL shoulder diagnosis; turns out the right shoulder growth plate was not different from the left on x-ray. First Dr did not even x-ray left shoulder for comparison - just an off-the-shelf "LL shoulder, take 2 advil, and see your PT in the morning" diagnosis!
Prescription now is 2-4 wks no throwing, Keebler (sp?)exercises to start, with PT incorporating Jobe exercises and core work. Setting back start of son's season (i.e., pitching)~ 6 wks pending successful strenghtening and reduction in scapula displacement.