Anomalous Radial Artery as an Incidental Finding During a Routine Carpal Tunnel Release.

Background: Compression of the median nerve at the wrist, or carpal tunnel syndrome, is the most commonly recognized nerve entrapment syndrome. Carpal tunnel syndrome is usually caused by compression of the median nerve due to synovial swelling, tumor, or anomalous anatomical structure within the carpal tunnel.

Methods: During a routine carpal tunnel decompression, a large vessel was identified within the carpal tunnel.