Which rotator cuff muscle is most likely to be injured with a clavicle fracture?
Supraspinatus
The rotator cuff muscle that is most likely to be injured with a clavicle fracture is the supraspinatus muscle. The supraspinatus muscle originates from the supraspinous fossa of the scapula and inserts into the greater tuberosity of the humerus. It is responsible for initiating abduction of the arm and is part of the rotator cuff, a group of four muscles and their tendons that help stabilize and move the shoulder joint.
A clavicle fracture can occur due to a direct blow to the shoulder or a fall on the outstretched hand, which can put stress on the shoulder joint and the rotator cuff muscles. When the clavicle fractures, it can cause instability in the shoulder joint and put additional strain on the supraspinatus muscle, leading to injury or tearing.
Symptoms of a supraspinatus muscle injury can include pain, weakness, and limited range of motion in the shoulder. Treatment may involve rest, physical therapy, and sometimes surgery depending on the severity of the injury.
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