The scapula has its own set of joint actions: The shoulder girdle has a set of joint actions specific to motion of the scapula. Although this may seem like just another set of confusing terms to ...

The shoulder muscles are responsible for maintaining the widest range of motion of any joint in your body. This flexibility is also what makes the shoulder prone to instability and injury. Muscles, ...

The shoulder, or pectoral girdle, is a structure that plays an essential role in many functions and movements. The three shoulder bones include the scapula, the clavicle, and the humerus. A shoulder ...

The shoulder joint is made up of four joints that work together for movement and stability. The rotator cuff, which includes four muscles, is essential for shoulder movement and stability. The ...

Shoulder instability occurs when your shoulder joint (ball and socket) has lost is normal alignment (ball resting symmetrically in the socket), which causes your arm to lose its support. The most ...

Shoulder pain is any type of pain or discomfort you feel in your shoulder. Your shoulder is called a ball-and-socket joint. It can move in many directions and it’s considered to be the most movable ...