Glenoid labrum

Definition

The glenoid labrum is a fibrocartilaginous rim attached around the margin of the glenoid cavity in the shoulder joint, which deepens the cavity and helps stabilize the joint. It acts as a "bumper" that cushions the head of the humerus and allows for a wider range of motion.

Related terms

Synovial Joint: A type of joint that is surrounded by a fluid-filled capsule which allows for considerable movement between articulating bones.

Fibrocartilage: A tough, flexible type of cartilage that resists compression, found in structures like intervertebral discs and joint capsules.

Shoulder Dislocation: An injury where the head of the humerus is displaced from its normal position in the glenoid cavity, often stressing or damaging surrounding structures including the glenoid labrum