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By Dr. Joe Muscolino Kinematic Chain of Elements Anterior view of the glenohumeral (GH) joint on the right side of the body. Permission Dr. Joe Muscolino. Photography by Dr. David Eliot. • Humerus Scapula Coracoid process Clavicle Acromioclavicular joint Acromion process L i s te n to T h e A B M P Po d c a s t a t a b m m /p o d c a s t s o r w h e reve r yo u a cce s s yo u r favo r i te p o d c a s t s 51 FEDERICA GIACOMAZZISTOCKSY W hen working with clients who have a shoulder condition, our first thought might be to assess and treat the myofascial tissues across the glenohumeral (GH) joint (Image 1). The deltoid and rotator cuff muscles might spring to mind. Although these muscles, and other muscles of the GH joint, might be involved, the movement patterns involved with movement of the shoulder extend well beyond the GH joint to involve the entire shoulder girdle, along with its connection to the trunk. In other words, the kinematic chain of elements involved with the shoulder joint complex extends beyond the humerus to include the scapula and clavicle, as well as their articulations with the rib cage and sternum of the axial body. The idea that there is a coupling of movements between the arm at the GH joint and the shoulder girdle relative to the trunk is called scapulohumeral rhythm.

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