Supraspinatus muscle
Supraspinatus muscle is a muscle that is part of the rotator cuff group, located in the shoulder. It is situated in the supraspinatus fossa, a concave depression in the rear portion of the scapula, or shoulder blade. The primary function of the supraspinatus muscle is to assist in the abduction of the arm at the shoulder joint.
Anatomy[edit | edit source]
The supraspinatus muscle originates from the supraspinatus fossa, a concave depression in the superior portion of the scapula, and inserts into the greater tubercle of the humerus. It is one of the four muscles that make up the rotator cuff, along with the infraspinatus muscle, teres minor muscle, and subscapularis muscle.
Function[edit | edit source]
The primary function of the supraspinatus muscle is to assist in the abduction of the arm at the shoulder joint. It also helps to stabilize the shoulder joint by keeping the head of the humerus in the glenoid cavity during arm movement.
Clinical significance[edit | edit source]
Injury to the supraspinatus muscle or its tendon, such as a rotator cuff tear, can cause pain and loss of function in the shoulder. This is a common injury in athletes and older adults. Treatment may include physical therapy, medication, or surgery.
See also[edit | edit source]
External links[edit | edit source]
- Supraspinatus muscle at PubMed Health
- Supraspinatus muscle at InnerBody.com
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Contributors: Prab R. Tumpati, MD
