After arthroscopic acromioplasty has been performed, an incision is made which splits the deltoid from the anterolateral acromion distally for approximately 4 cm, and incorporates the lateral arthroscopic portal. Since the axillary nerve is usually located 5 cm distal to the acromion, one must be careful not to exceed this 4 cm deltoid split. All information copyright San Diego Shoulder Arthroscopy Inc.,1997, unless otherwise noted.
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