yläolkapää

Yläolkapää refers to the upper part of the shoulder. This anatomical region encompasses the structures that connect the arm to the trunk and allow for a wide range of motion. Key components of the yläolkapää include the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone). These bones form the glenohumeral joint, the primary ball-and-socket joint of the shoulder, which is crucial for movements such as lifting, reaching, and rotating the arm.

The yläolkapää is further supported by a complex network of muscles, tendons, and ligaments. The rotator cuff muscles are particularly important for stabilizing the glenohumeral joint and enabling controlled movements. These muscles include the supraspinatus, infraspinatus, teres minor, and subscapularis. The deltoid muscle, which covers the shoulder joint, is responsible for the arm's abduction, flexion, and extension. Ligaments, such as the glenohumeral ligaments, provide additional stability to the joint.

Conditions affecting the yläolkapää can result in pain, stiffness, and reduced mobility. Common issues include rotator cuff tears, impingement syndrome, frozen shoulder (adhesive capsulitis), and fractures of the clavicle or humerus. These conditions can arise from overuse, injury, or degenerative changes. Treatment often involves rest, physical therapy, medication, and in some cases, surgical intervention to restore function and alleviate pain. The intricate anatomy and functional importance of the yläolkapää make it susceptible to various ailments.