ER poor when studied critically. I use separate transfers to supraspinatus and infraspinatus as well as posterior Axillary for there's minor. Traditional teaching shoulder abduction reliability only when double transfer XI to SSN and triceps branch to Ax N. ER needs IS branch SSN plus T minor in my experience.

Patients with upper trunk lesion of brachial plexus injury I prefer to perform the transfer of Accessory for suprascapular nerve on posterior approach and motor branch of radial nerve for axillary nerve. When we perform neurotization of XI to SSN on posterior approach, usually patients recover some degree of external rotation.