J Korean Neurosurg Soc.  2009 Jan;45(1):57-59. 10.3340/jkns.2009.45.1.57.

Ulnar Nerve Compression at Guyon's Canal by an Arteriovenous Malformation

• Kim SS
• Kim JH
• Kang HI
• Lee SJ

• KMID: 1466347
• DOI: http://doi.org/10.3340/jkns.2009.45.1.57

Abstract

Guyon's canal at the wrist is not the common site of ulnar nerve compression. Ganglion, lipoma, anomalous tendon and muscles, trauma related to an occupation, arthritis, and carpal bone fracture can cause ulnar nerve compression at the wrist. However, ulnar nerve compression at Guyon's canal by vascular lesion is rare. Ulnar artery aneurysm, tortous ulnar artery, hemangioma, and thrombosis have been reported in the literature as vascular lesions. The authors experienced a case of ulnar nerve compression at Guyon's canal by an arteriovenous malformation (AVM) and the patient's symptom was improved after surgical resection. We can not easily predict vascular lesion as a cause of ulnar nerve compression at Guyon's canal. However, if there is not obvious etiology, we should consider vascular lesion as another possible etiology.

Keyword

Ulnar nerve; Arteriovenous malformation

MeSH Terms

Aneurysm
Arteriovenous Malformations
Arthritis
Carpal Bones
Ganglion Cysts
Hemangioma
Lipoma
Muscles
Occupations
Tendons
Thrombosis
Ulnar Artery
Ulnar Nerve
Ulnar Nerve Compression Syndromes
Wrist