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The shoulder joint is an extremely mobile joint, with a wide range of movement possible: Extension (upper limb backwards in sagittal plane) – posterior deltoid, latissimus dorsi and teres major. Flexion (upper limb forwards in sagittal plane) – pectoralis major, anterior deltoid and coracobrachialis.
The three bones in your shoulder are your: Shoulder blade (scapula). Collarbone (clavicle). Upper arm bone (humerus). Because of the motion of these three bones at your shoulder joint, the arm can be moved to position the elbow and hand.
The shoulder joint is the articulation between the thorax and the arm. This joint is one of the most complex and mobile joints of the body as it is comprised of four articulations, plus muscles, tendons, and ligaments connecting the upper limb to the axial skeleton.
The glenohumeral, or shoulder, joint is a synovial joint that attaches the upper limb to the axial skeleton. It is a ball-and-socket joint, formed between the glenoid fossa of scapula (gleno-) and the head of humerus (-humeral).
Shoulder joint anatomy refers to four different joints in and around the shoulder. The glenohumeral joint links the upper arm to the shoulder blade. The acromioclavicular joint links the shoulder blade to the collar bone.
Comprising numerous ligamentous and muscular structures, composed of the clavicle, scapula, humerus and sternum, and an intricately designed combination of four joints, the Glenohumeral (GH) Joint, the Acromioclavicular (AC) Joint and the Sternoclavicular (SC) Joint, and a "floating joint", known as the Scapulothoracic (ST) joint.
“Shoulder joints” refers to four different joints: A joint termed the glenohumeral conveys the scapular glenoid cavity and the humeral head. A structure made up of the clavicle and the scapular acromion together is dubbed the acromioclavicular (AC) joint.
There are actually four joints that make up the shoulder. The main shoulder joint, called the glenohumeral joint, is formed. where the ball of the humerus fits into a shallow socket on the scapula. This shallow socket is called the glenoid. The acromioclavicular (AC) joint is where the clavicle meets the acromion.
The shoulder is a complex anatomical structure consisting of four joints. [1] . Movements at the shoulder enable us to move and position our arm and hand in space. The muscles of the shoulder provide a stable base for these upper extremity movements.
The shoulder joint is comprised of three bones, the humerus, scapula, and clavicle. Humerus. Proximal articulation: with the glenoid fossa of the scapula. Distal articulations: Laterally, the capitulum articulates with the head of the radius. Medially, the trochlea articulates with the trochlear notch of the ulna.