It is defined as a compression of the distal ulnar nerve at the level of the wrist as it enters the hand through a space called ulnar tunnel or Guyon canal. The clinical presentation can be purely sensory, purely motor or both depending on the location of the nerve compression.

Guyon’s canal, also called ulnar tunnel or ulnar canal, is an anatomical fibro-osseous canal located on the medial side of the hand. It extends between the proximal border of the pisiform bone and distally at the hook of the hamate .

2022年1月5日 · Ulnar nerve entrapment affects your ulnar nerve in your arm. Cubital tunnel syndrome occurs in your elbow, while Guyon’s canal syndrome affects your wrist. Overuse injuries, cysts and other problems can stretch or put pressure on the ulnar nerve. You may have hand and finger weakness, numbness, pain or tingling. At-home treatments can help.

2024年12月12日 · Ulnar Tunnel Syndrome is a compressive neuropathy of the ulnar nerve at the level of the wrist (Guyon's canal), most commonly due to a ganglion cyst. Diagnosis can be made clinically with paresthesias of the small and ring finger with intrinsic weakness with a Tinel's sign over Guyon's canal.

2025年2月9日 · The ulnar (Guyon’s) canal is a fibro-osseous tunnel located at the level of the palm. It transmits the ulnar neurovascular bundle from the forearm into the hand. In this article, we shall look at the anatomy of the ulnar canal – its borders, contents, and clinical relevance.

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. [1] (These are named after the ulna, the long bone on the little finger side of the arm.)

2023年10月5日 · Guyon’s canal (also known as ulnar tunnel or canal) is a fibro-osseous tunnel at the anterior aspect of the wrist. It is superficial and slightly proximal to the flexor retinaculum. It is approximately 4 cm in length, spanning from the proximal aspect …

Ulnar tunnel syndrome occurs when of the main nerves to the hand is compressed at the wrist. The condition causes numbness and tingling in the little finger and along the outside of the ring finger. It can also make it hard for you to pinch and grip things.

2017年12月13日 · Guyon’s Canal Syndrome is a common nerve compression affecting the ulnar nerve as it passes through a tunnel in the wrist called Guyon’s canal. The ulnar nerve begins at the side of the neck, travels behind the elbow and ends in the hand at the little and ring fingers.

2023年8月14日 · Guyon canal is a space at the ulnar (medial) border of the volar aspect of the wrist. It can also be referred to as the ulnar canal or ulnar tunnel. This canal is an anatomical fibro-osseous structure. The canal begins at the proximal border of the pisiform bone and ends distally at the hook of the hamate.[1]