Glenoid cavity

The glenoid cavity is a shallow, socket-like part of the shoulder blade (scapula) that forms the socket of the shoulder joint. It articulates with the rounded head of the upper arm bone (humerus), allowing for a wide range of shoulder movements like lifting, reaching, and rotating. Its shallow nature provides flexibility but relies on muscles, ligaments, and surrounding structures for stability. The glenoid cavity also has a rim called the glenoid labrum, which helps deepen the socket and support the joint. Overall, it plays a crucial role in shoulder mobility and stability.