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Shoulder instability occurs when the humerus (head of the upper arm bone) is forced out of the glenoid (shoulder socket), or dislocates. This typically happens at first as the result of a sudden injury, such …

Oct 23, 2025 · The labrum is a rim of cartilage that surrounds the socket of the shoulder joint. The socket of the shoulder joint is shallow, and the labrum gives the socket more depth, and thus more …

Nov 6, 2025 · The shoulder joint (glenohumeral joint) is a ball and socket joint between the scapula and the humerus. It is the major joint connecting the upper limb to the trunk.

Your shoulder joint (glenohumeral joint) is a ball-and-socket joint that connects your upper arm bone (humerus) and shoulder blade (scapula). This lets you move and rotate your arms.

The shoulder provides more motion than any other joint in the human body and is a marvel of mobility and stability. The glenohumeral joint is where the ball (humeral head) and the socket (the glenoid) meet.

Aug 23, 2022 · A dislocated shoulder is an injury in which the upper arm bone pops out of the cup-shaped socket that's part of the shoulder blade. The shoulder is the body's most flexible joint, which …

This is the joint formed between part of the shoulder blade (scapula) and the collarbone (clavicle). Arthritis in this joint often causes pain when the arm is brought across the chest.

This is the socket that holds the head of the humerus (the bone of the upper arm). A glenoid fracture can allow the head of the humerus to slip out of the socket.

6 days ago · The glenoid fossa forms a very shallow socket, so the muscles, ligaments, and cartilage of the shoulder joint reinforce its structure and help to prevent dislocations. A ring of cartilage known as …