Re: Shoulder Injuries
My shoulders used to come out of joint. Ouch.
All advice so far is good.
For me - healing old spinal injuries has taken the 'death lock' I had in my upper spine out - allowing the shoulder girdles to float freely, rather than staying in one place and causing my arms to lever out of joint. The Chi Kung I do is teaching me 'ki' or 'kokyu' again in my body, rather than (unbalanced) muscular force. I feel younger.
Good luck training and on your shodan test.