What term describes the coordinated movement of the scapula that supports humeral abduction?

Scapulohumeral rhythm is the term that describes the coordinated movement of the scapula during arm elevation, particularly during humeral abduction. This concept highlights the relationship between the scapula and the humerus as the arm is raised. For every degree of humeral abduction, there is approximately one degree of upward rotation of the scapula. This coordination is essential to maintain proper biomechanics of the shoulder joint and to ensure that the range of motion is achieved efficiently and safely. In this context, scapulohumeral rhythm plays a critical role in preventing impingement and conserving shoulder stability during arm movements.

Other concepts, such as the sternoclavicular joint, refer to a specific joint in the shoulder complex that connects the clavicle to the sternum but does not describe the movement coordination itself. The rotator cuff comprises muscles and tendons that stabilize the shoulder but does not specifically address the scapular movement relationship with humeral abduction. Lastly, retinacula refer to bands of fibrous tissue that hold tendons to the bones, not specifically related to scapular movement during arm elevation. This makes scapulohumeral rhythm the most accurate term for the phenomenon described in the question.