Guyon’s Canal Syndrome is defined as the compression of the ulnar nerve as it passes through the portion of the wrist known as Guyon’s Canal. Though this condition is similar to carpal tunnel syndrome, Guyon’s Canal syndrome involves the ulnar nerve and Carpal Tunnel syndrome affects the median nerve. The ulnar nerve starts at the neck, runs down through the elbow and into the hand, specifically the pinky and ring fingers.  In order to reach the hand, the ulnar nerve runs through the Guyon’s Canal. Guyon’s Canal is formed by two bones in the wrist and the ligament that connects them. It allows for the ulnar nerve and ulnar artery to pass from the arm and into the hand. 

Causes: There are multiple reasons why the ulnar nerve may be injured. These reasons include trauma due to repetitive motion, ganglion cysts, fractures or dislocations, and even inflammation. 

Signs and Symptoms: Depending on where the ulnar is compressed, symptoms can be purely motor, sensory or both. Symptoms typically begin with numbness at the ring and little fingers. This can progress to a burning pain in the wrist and hand associated with decreased sensation at these same fingers. In addition to these symptoms, weakness can begin to manifest at the palm of the hand, making it difficult to spread the fingers. If an individual continues to experience any of these signs or symptoms, they should be seen by a specialist in the field of Electrodiagnostic Medicine,, (EMG/NCS). For additional information, you can contact California Sports and Rehab Center. We can accommodate your needs in multiple locations in the Los Angeles and Orange County areas. Please visit us at or call our office at (310)-652-6060 for any questions.