Guyon's canal syndrome is a condition that causes compression of the ulnar nerve while it passes from the wrist into the hand through a space called the ulnar tunnel or Guyon's canal.
Guyon's canal syndrome is also called ulnar tunnel syndrome or handlebar palsy.
Guyon's canal syndrome has several causes.
Overuse of the wrist from heavy gripping, twisting, and repeated wrist and hand motions can cause symptoms.
Working with the hand bent down and outward can squeeze the nerve inside Guyon's canal.
Constant pressure on the palm of the hand can produce symptoms.
Guyon canal syndrome is a relatively rare peripheral ulnar neuropathy that involves injury to the distal portion of the ulnar nerve as it travels through a narrow anatomic corridor at the wrist.
The ulnar nerve, together with the ulnar artery, passes through the tunnel of Guyon.
This tunnel lies between two dynamic structures, the pisiform and hamate bones, and is covered by the pisohamate ligament, which is a continuation of the flexor carpi ulnaris tendon.
Compression of it may result in numbness and tingling in the ring and little fingers and/or hand weakness.
Nonsurgical treatment such as rest, stretching exercises, and anti-inflammatory medications can generally resolve this condition.
To get a proper diagnosis, you should see an orthopedist.
After surgery a splint will be applied to the elbow holding it in a bent position.
This will be worn anywhere from 2-4 weeks to allow the incision to heal and let the ulnar nerve set into its new position.
Full recovery will vary, but on average it can take anywhere from 3 to 6 months.