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Left shoulder, lateral decubitus position, arthroscopic view, anterosuperior portal. (A) A metal hook guide is introduced posteriorly and positioned over the mark on the anterior glenoid rim. (B) Using the hook guide, 2 tunnels are made with 2 cannulated 2.4-mm drills. (CL, capsulolabral complex; D, drill; G, anterior glenoid rim; H, humeral head; HG, metal hook guide; SS, subscapularis muscle.)
