Winged Scapula

Overview of Winged Scapula

The long thoracic nerve of Bell is composed of fibers that originate in the fifth, sixth and seventh cervical nerve roots. The descend along the lateral chest to supply the serrate anterior muscle. This muscle helps hold the scapula to the chest wall. Damage to it allows abnormal positioning of the scapula.

Causes of Winged Scapula

This disorder is caused by injury to the long thoracic nerve of Bell. It is injury by carrying heavy weights on the shoulder. It may be damaged with diabetes, neuralgic amyotrophy or following systemic disorders. Traction may damage it. There are some cases with no specific cause.

Signs and Symptoms of Winged Scapula

Paralysis of the long thoracic nerve of Bell results in winging of the scapula. When the outstretched arms are pushed forward against resistance, the inner portion of the scapula wings out or is displaced away from the chest wall. There is the inability to raise the arm overhead.

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Medical Content Last Updated on 07/12/2008

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