Ulnar canal

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Ulnar canal
Transverse section across the wrist and digits.
Superficial palmar nerves.
Dorlands/Elsevier	c_04/12207652

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.

Contents 1 Eponym 2 Clinical significance 3 References 4 See also

[edit] Eponym

Guyon's canal was named after French surgeon Jean Casimir Félix Guyon (1831-1920).

[edit] Clinical significance

Entrapment of the ulnar nerve at the ulnar canal can result in ulnar neuropathy at the wrist.^[1] 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.

[edit] References

[edit] See also

• Carpal tunnel

v • d • e General anatomy of upper limbs Arm Axilla • Axillary sheath • axillary folds (Anterior, Posterior) spaces (Quadrangular space, Triangular space, Triangular interval) • Clavipectoral triangle compartment of arm (Posterior, Anterior) fascia (Axillary, Brachial) - intermuscular septa (Lateral, Medial) Forearm Cubital fossa (Bicipital aponeurosis) • Cubital tunnel • common tendons (Extensor, Flexor) • Interosseous membrane of the forearm compartment of forearm (Posterior, Anterior) fascia (Antebrachial fascia) Hand posterior: Extensor retinaculum • Extensor expansion • Vincula tendina • Anatomical snuff box anterior: Flexor retinaculum • Carpal tunnel • Palmar aponeurosis • Ulnar canal • Synovial sheath (Common synovial sheath for the flexor tendons) Finger