Ulnar canal

Infobox Anatomy
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Caption = Transverse section across the wrist and digits.


Caption2 = Superficial palmar nerves.
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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.

Eponym

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. [cite journal | author=Shea JD, McClain EJ | title=Ulnar nerve compression syndrome at and below the wrist | journal=J Bone Joint Surg (Am) | year=1969 | pages=1095–11031 | volume=51A | issue= | pmid=5805411] 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

ee also

* Carpal tunnel