Figure 3.

(a) Intraoperative exposure. All nerves have been identified and marked with blue backgrounds. SA, spinal accessory nerve; SS, suprascapular nerve; Ax, axillary nerve; Tri, nerve branch to medial head of triceps. Note that the suprascapular nerve is deep within the operative site. It and the axillary nerve have been divided. The donor nerves have not yet been divided. (b) Intraoperative exposure; a closer view of the suprascapular dissection. The trapezius muscle has been divided and is being retracted. The superior transverse scapular ligament (asterisk) has been identified. The ligament is glistening white. Note that the superior border forms a sharp edge. The forceps are resting in the hollow of the notch below the ligament.