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What Causes a Brachial Plexus Injury?

A difficult delivery is the most common cause of brachial plexus lesions in infants. During birth, if the baby was large and his or her head was tilted to allow the shoulders to pass, an injury to the brachial plexus may occur.

However, the nerve fibers can become injured or bruised as a result of any force or pulling. This causes the muscles that are stimulated by those nerves to weaken or become nonfunctional. Nerves typically repair themselves at a rate of about 1 mm per day or 1 inch per month, but this process can take many months. Sometimes, if the nerve has been severed, it cannot repair itself and the muscle will not work.

Last Update
February 22, 2013

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