circumferential cartilage

ac·e·tab·u·lar la·brum

[TA] a fibrocartilaginous rim attached to the margin of the acetabulum of the hip bone. Synonym(s): labrum acetabuli [TA], acetabular lip, circumferential cartilage (1) , cotyloid ligament, ligamentum cotyloideum

circumferential cartilage

(1) Acetabular rim; labrum acetabulare [NA6]. 
(2) Glenoid rim; labrum glenoidale [NA6].