![]() ![]() Shoulder sling height can be adjusted to the correct position required. Latissimus: The Latissimus is one of the largest muscles in the back and primarily controls shoulder adduction (drawing the raised arm down towards the body). Effectively immobilizes the shoulder and elbow joint at a 30 degree angle. Teres Minor: The Teres Minor is a rotator cuff muscle that controls shoulder external rotation (rotation of the arm such that the hand moves away from the midline). Teres Major: The Teres Major is a shoulder muscle that controls shoulder adduction (drawing the raised arm down towards the body). Supraspinatus: The Supraspinatus is a rotator cuff muscle that primarily controls shoulder abduction (outside arm elevation away from the midline of the body). Subscapularis: The Subscapularis is a rotator cuff muscle that controls shoulder internal rotation (rotation of the arm such that the hand moves towards the midline). The prime abductors of the arm are the supraspinatus and deltoid muscles. Infraspinatus: The Infraspinatus is a rotator cuff muscle that controls shoulder external rotation (rotation of the arm such that the hand moves away from the midline). It has three major parts that control shoulder flexion (forward elevation of the arm), shoulder abduction (outside arm elevation away from the midline of the body) and shoulder extension (movement of the arm behind the back). However, it can only do so, when the arm is already abducted beyond fifteen degrees. Brush up on your anatomy knowledge with the interactive anatomy tool on learn about the muscles of the shoulder.ĭeltoid: The Deltoid muscle is located on the outside of the shoulder. Abduction of arm Abductio brachii 1/4 Synonyms: Abduction of shoulder joint, Abductio articulationis glenohumeralis The deltoid muscle (acromial part) is the principal abductor of the arm at the glenohumeral joint. The evaluation of the upper limbs, including the muscular strength of the shoulder, elbow or wrist has received little attention, yet arms are used in most. It is the opposite of arm adduction and contributes to the combined movement of shoulder circumduction. What gives you the ability to throw a ball or reach for the top shelf? Shoulder muscles. Arm abduction represents movement of the arm away from the midline of the body in the coronal plane and, in most cases, isolated abduction can be achieved to 160-180.
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