Roof Of Tunnel Of Guyon

The ulnar nerve and its sensory and motor branch.

Roof of tunnel of guyon.

The anatomic boundaries of guyon s canal include. The volar portion roof of the canal is created by the volar carpal ligament also known as the palmar carpal ligament. Guyon canal serves as a protection for the ulnar nerve and ulnar artery as they traverse from the distal wrist into the hand. There have been trials with gloves which help protect the ulnar nerve from compression.

The ulnar canal or ulnar tunnel also known as guyon s canal or tunnel is a semi rigid longitudinal canal in the wrist that allows passage of the ulnar artery and ulnar nerve into the hand. The ligament heals by forming scar tissue. Mentous roof of the guyon canal. The ligament that forms the roof of guyon s canal is cut to relieve the pressure on the ulnar nerve.

By cutting the ligament pressure is taken off the ulnar nerve. Once in view this ligament is released using a scalpel or scissors. The skin is then sewn back together. Care is taken to make sure that the ulnar nerve is out of the way and protected.

The most radical treatment option is surgery to relieve tension in the volar carpal ligament which forms the roof of guyon s canal thereby reducing compression on the ulnar nerve. It is formed by the following structures. Between the pisiform and the hook of the hamate is a depression known as the tunnel of guyon. Guyon s canal left hand from the palmar side yellow.

Jean casimir félix guyon. The pisohamate ligament forms the roof of that canal. Volar carpal ligament the roof. The needle is then withdrawn halfway and normal saline solution is injected.

Creation of working space three millimeter skin incisions are made at the portal sites. Guyon s canal is a unique location where ulnar nerve is vulnerable to compressive injury although the more common location of the ulnar nerve injury occurs at the elbow which is known as cubital tunnel syndrome. Floor is formed by the flexor retinaculum extending transversely across carpal bones and roof is formed by the pisohamate ligament ligament attaching pisiform to hook of hamate. Because the tunnel of guyon encloses the ulnar.

The hook of hamate bone. The roof of the canal is made up of the superficial palmar carpal ligament while the deeper flexor retinaculum and hypothenar muscles comprise the floor. Once the ligament is cut the pressure on the nerve is relieved.