Ulnar canal
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The ulnar canal, also called Guyon's canal, is a potential space at the wrist between the pisiform bone and the hamate bone through which the ulnar artery and the ulnar nerve travel into the hand. Guyon's canal was named after French surgeon Jean Casimir Félix Guyon (1831-1920).
Clinical significance
Entrapment of the ulnar nerve at the ulnar canal can result in ulnar neuropathy at the wrist. There are four subtypes of ulnar neuropathy at the wrist, of which type II is the most common. Guyon's canal syndrome may be secondary to ganglion cyst or compression against cycling handlebar.
References
- Shea JD, McClain EJ (1969). "Ulnar nerve compression syndrome at and below the wrist". J Bone Joint Surg (Am) 51A: 1095-11031. PMID 5805411.
See also
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
