 [ Symptoms ] i have debilitating shoulder pain acupuncture physio and doctors may have caused permanent damage [ Disease ] in my opinion first step is to do a nerve conduction velocity to determine id damage is permenant or you can wait 3 weeks for wallerian degeneration to occur and further 1 day for every milimeter length of your arm second physical therapy should focus on streching the upper shoulder capsule and strengthening your arm depressors like latismus dorsi  exercise like resisted exercise in flextion and abduction will make problem worse physical therapy can be helpfull if your physical therapist understands body biomechanicsgood luck