Schulterinnenrotation

Schulterinnenrotation refers to the internal rotation of the shoulder joint, a movement where the humerus (upper arm bone) rotates inward towards the body's midline. This action is primarily facilitated by the subscapularis muscle, which is part of the rotator cuff. Other contributing muscles include the pectoralis major, latissimus dorsi, and teres major.

The range of motion for internal shoulder rotation is crucial for many everyday activities, such as reaching into a car, dressing oneself, or throwing a ball. It is an integral part of complex movements like swimming, tennis serves, and pitching in baseball. Deficits in shoulder internal rotation can significantly impact functional ability and may lead to compensatory movements and potential injury.

Common causes of reduced shoulder internal rotation include muscle tightness, particularly of the posterior capsule and the infraspinatus and teres minor muscles. Rotator cuff tears, especially of the subscapularis, can also impair this movement. Frozen shoulder (adhesive capsulitis) is another condition that severely restricts both active and passive internal rotation.

Rehabilitation and treatment for limited shoulder internal rotation often involve stretching exercises to lengthen tight posterior structures, strengthening exercises for the internal rotators, and manual therapy techniques to improve joint mobility. Restoring adequate internal rotation is vital for pain-free shoulder function and preventing further shoulder dysfunction.