Superior detachment of a glenoid labrum variant resembling an incomplete discoid meniscus in a wheelchair ambulator

Mobile Superior Glenoid Labrum

“…16 Two reports described the LHBT actually taking origin extra-articularly with no attachment to either the superior labrum or the supraglenoid tubercle. 13,18 A case report by Lee and Harryman 15 described a rare variant of a discoid-type meniscal- A B appearing labrum. In their patient, the labrum was seen to cover nearly the entire articular surface of the glenoid.…”

Magnetic resonance imaging evaluation of meniscoid superior labrum: normal variant or superior labral tear

“…The authors described three types of labrum: triangular (not draped over the glenoid surface), in 44%; meniscoid (partially extending over the glenoid articular surface), in 38%; and "bumper" (characterized by a small excrescence of fibrous tissue, which probably represents a more prominent meniscoid labrum), in 18%. Lee et al ( 29 ) stated that the superior third of the labrum may resemble a knee meniscus and described a case of a labrum variant covering nearly all of the glenoid surface, the exception being a small central area. The authors suggested that this incomplete discoid labrum was caused by excessive superior loading of the labrum, given that the patient was in a wheelchair.…”

Superior Labrum Anterior to Posterior (SLAP) lesions of the shoulder

“…19 Finally, a meniscoid superior labrum is a normal anatomical variant and does not require repair. 20,21 Pathophysiology Several anatomical and biomechanical factors predispose to SLAP lesions. The strength of the superior labrum/biceps complex varies according to shoulder position.…”