Not sure what part of mechanically can’t move it you don’t get. So go ahead mr trainer you tell me what is going on here and how it’s nothing to worry about
You over engage the trap on the right indicating a problem with the rotator of the right.....but thats neither here, nor there.
What was positive in the orthopoedic exam?
If there is an issue within the first 30deg, that is most likely a problem with the supraspinatus muscle and/or tendon. Because you can't move it...that would more likely be a partial thickness tear. Full thickness would have pain subside within 48 - 72 hrs .
Being that you only did abduction, there is limited info. Testing should involve internal rotation of the arm, then shoulder flexion to the point of pain, then resistance placed on forearm.
Then passively bring arm into the same position and release the arm allowing the patient to keep in that position. If they can't that can indicate rotator + labrum issue
arm hanging down with active internal and external rotation also will give a clue into the AC joint. With superior to inferior pressure on the Ac joint and measuring the patients response will also give in indication if any ligament damage is suspected.
Oh, I forgot....I am just a fucking trainer
