Arthroscopic suprascapular nerve release at the suprascapular notch in a cadaveric model: an anatomic approach

Abstract

Arthroscopic release of the suprascapular nerve at the suprascapular notch, to our knowledge, has rarely been described. The purpose of this study was to evaluate the feasibility and relevant anatomic landmarks in a cadaveric model that can be identified arthroscopically for reliable and reproducible arthroscopic release of the superior transverse scapular (STS) ligament. In 8 fresh-frozen cadaveric shoulders, arthroscopic release of the STS ligament was performed. The acromioclavicular joint is first identified while viewing through a posterior subacromial portal. The distal clavicle is then followed medially until the most lateral portion of the coracoclavicular (CC) ligaments (trapezoid ligament) is identified. The most medial margin of the CC ligaments (conoid ligament) is identified, and the trapezoid and conoid ligaments are dissected and identified individually. The conoid ligament is followed inferiorly and medially to the base of the coracoid. At the base of the coracoid, the confluence of the trapezoid and conoid ligaments (CC) and the STS ligament is identified. The STS ligament can be identified coursing horizontally across the field of view. The STS ligament may be incised by use of dissecting scissors through a lateral, accessory lateral, or accessory posterior portal, releasing the suprascapular nerve.