Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association
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Editorial Comment
Editorial Commentary: Shoulder Anatomy, Finding the Axillary Nerve: Measure Twice, Cut Once.
Most descriptions of shoulder anatomy note that the axillary nerve lies approximately 5 cm below the anterolateral corner of the acromion, and the nerve has been reported to range from 2 to 7 cm from the acromial edge, depending on the patient and measuring technique. The safe trans-deltoid operable area has been described as up to 4 cm below the acromion. A useful clinical guide I use is that the inferior extent of the subacromial bursa ends above the axillary nerve.