Skulderleddets

Skulderleddets, also known as the shoulder joint or shoulder girdle, is a complex articulation in the human body that connects the upper limb to the axial skeleton. It consists of three bones: the clavicle, scapula, and humerus. The clavicle is a long, slender bone that connects the sternum to the scapula, while the scapula is a flat, triangular bone that forms the shoulder blade. The humerus is the long bone of the upper arm that extends from the shoulder joint to the elbow.

The shoulder joint is a ball-and-socket joint, with the humeral head articulating with the glenoid cavity of the scapula. This allows for a wide range of motion, including flexion, extension, abduction, adduction, internal rotation, and external rotation. The shoulder joint is also a multiaxial joint, meaning it can move in multiple planes simultaneously.

The shoulder joint is supported by a combination of ligaments, tendons, and muscles. The rotator cuff, a group of four muscles and their tendons, is particularly important for shoulder stability and function. These muscles include the supraspinatus, infraspinatus, teres minor, and subscapularis.

The shoulder joint is susceptible to various injuries, including dislocations, rotator cuff tears, and shoulder impingement syndrome. These injuries can be caused by trauma, overuse, or degenerative changes. Treatment options for shoulder joint injuries may include rest, physical therapy, medication, or surgical intervention, depending on the severity and type of injury.