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The glenoid labrum (glenoid ligament) is a fibrocartilaginous rim attached around the margin of the glenoid cavity in the shoulder blade.
There are two types of labral tears. A primary or type 1 tear occurs due to a fraying or detachment of the labrum from the rim of the acetabulum. A type 2 tear is a tear within the substance of the labrum, typically caused crushing of the labrum against the neck of the femur by an overhanging rim of the acetabulum (pincer lesion). Code 29916 (Arthroscopy, hip, surgical; with labral repair) describes arthroscopic repair of the torn labrum.