This hydrodissection creates a space just superficial to the ligamentous roof of the guyon ca nal 15 blanching of the overlying skin can be observed fig 2.
Roof of tunnel of guyon.
Creation of working space three millimeter skin incisions are made at the portal sites.
The ulnar nerve and its sensory and motor branch.
Jean casimir félix guyon.
Care is taken to make sure that the ulnar nerve is out of the way and protected.
There have been trials with gloves which help protect the ulnar nerve from compression.
This ligament forms the roof over the top of guyon s canal.
The skin is then sewn back together.
Volar carpal ligament the roof.
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.
Figure 1 volar wrist anatomy of floor and roof of guyon canal.
The pisohamate ligament forms the roof of that canal.
The hook of hamate bone.
The ligament that forms the roof of guyon s canal is cut to relieve the pressure on the ulnar nerve.
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.
Once in view this ligament is released using a scalpel or scissors.
The needle is then withdrawn halfway and normal saline solution is injected.
Guyon s canal left hand from the palmar side yellow.
Between the pisiform and the hook of the hamate is a depression known as the tunnel of guyon.
Because the tunnel of guyon encloses the ulnar.
The volar portion roof of the canal is created by the volar carpal ligament also known as the palmar carpal ligament.
The anatomic boundaries of guyon s canal include.
Guyon canal serves as a protection for the ulnar nerve and ulnar artery as they traverse from the distal wrist into the hand.
The ligament heals by forming scar tissue.
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.
By cutting the ligament pressure is taken off the ulnar nerve.
Mentous roof of the guyon canal.
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.
