Injury to the suprascapular nerve may occur in isolation or as part of an injury to the brachial plexus. Patients subsequently lose function of their rotator cuff due to denervation of the supraspinatus and infraspinatus muscles. The most common nerve transfer to restore rotator cuff function is the spinal accessory nerve (SAN) to suprascapular nerve (SSN) transfer. Rehabilitation begins within the first month following surgery with the introduction of donor trapezius muscle activation performed with active scapular retraction and depression. Combined donor-recipient exercises are introduced to encourage cortical plasticity by strengthening the new motor pathway. Active scapular retraction and depression are initially combined with passive recipient action and are gradually advanced to active-assisted and eventually active shoulder elevation and external rotation. Once patients can perform antigravity external rotation and shoulder abduction, they should try to incorporate this movement into functional tasks throughout the day. Although each patient’s recovery varies, one can anticipate 6–8 months for trace contraction and 12–14 months for functional movement in the supraspinatus and infraspinatus muscles.