Hi i work in Elite rugby, it is very rare that you dislocate without a tear off cuff or labrum and in the worst cases this involves the bicep tendon being dislodged and occupying the glenoid capsule/space in certain positions. You would be better to get an athrogram as the reason your shoulders may now be different is the damaged shoulder cannot access its full range and power due to boimechanical dysfunction therefore the muscles loose their tone and structure

hope this helps