Hi guys! I personally dont know much about body building but i saw Parsonage Turner syndrome mentioned and thought i'd put in my pennys worth! Im a physio student and on my recent outpatient placement i saw a lady who had been on holiday 2 months earlier and since that time she had felt pain around the posterolateral aspect of the shoulder. On examination she had only about 30 degrees of active shoulder flexion and abduction, she could not acheive hand behind back or hand behind head movements actively. Passively she had full range of movement ruling out Wikipedia reference-linkfrozen shoulder (which was my impression from the referral as she was also a diabetic).Tests for RC injury were negative. She also had very marked wasting of her shoulder musculature, particularly infraspinatus, supraspinatus, and deltoid. The only method of injury that we could identify was that when on holiday she had slept in a bed with a big dip in the middle and she felt she may have slept awkwardly. After doing some resaearch and consulting the medical staff we made the diagnosis of neuropraxia or Parsonage Turner syndrome. The good news for this lady is that with some simple strengthening exercises she had regained almost full active ROM within 6 weeks of initial assessment (so roughly 3 1/2 months post injury). The difference from your story is that she experienced very minimal neurological symptoms no tingling, numbness etc. I know this isn't much help to anyone but just wanted to let you know of my experience of Parsonage Turner syndrome as Ive heard its quite rare and as a student its nice to be able to post something other than a question on here! Hope that you all find a conclusion and that your problems resolve!