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Journal of Korean Neurosurgical Society 2009;45(1): 57-59.
doi: https://doi.org/10.3340/jkns.2009.45.1.57
Ulnar Nerve Compression at Guyon's Canal by an Arteriovenous Malformation.
Sung Soo Kim, Jae Hoon Kim, Hee In Kang, Seung Jin Lee
Department of Neurosurgery, Eulji University School of Medicine, Seoul, Korea. grimi2@hanmail.net
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.
Key Words: Ulnar nerve; Arteriovenous malformation
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