Explanation:
The described finding is a Buford complex, which is a normal anatomical variant present in about 1.5% of shoulders. It consists of a thickened, cord-like middle glenohumeral ligament and an absent anterosuperior labrum. Recognizing this is crucial, as mistakenly "repairing" the MGHL to the anterior glenoid will severely restrict external rotation and cause postoperative stiffness. Therefore, no intervention is required. Reference: Rockwood and Matsen's The Shoulder, 6th Edition.