Labrum is soft cartilage that lines the ball-and-socket joints of the shoulders. This cartilage encircles the glenoid, a cavity in the shoulder blade, providing protection and stability to the ...

The shoulder is one of the most mobile joints in the body, which also makes it vulnerable to injury. One of the key structures that helps keep it stable is the labrum, a ring of cartilage that ...

Shoulder instability occurs when the arm’s ball joint moves in and out of the shoulder socket joint. Chronically unstable shoulders can lead to loose shoulder joints that slip out of place repeatedly.