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A Rare Cause of Carpal Tunnel Syndrome: Volar Lunate Dislocation [Turk J Neurol]
Turk J Neurol. 2008; 14(3): 217-220

A Rare Cause of Carpal Tunnel Syndrome: Volar Lunate Dislocation

Ayşe Bayrak1, İlkay Koray Bayrak2, Meltem Ceyhan2, Hande Türker1, Ufuk Sandıkçı1
1Department Of Neurology, Ondokuz Mayıs University, Faculty Of Medicine, Samsun, Turkey
2Department Of Radiology, Ondokuz Mayıs University, Faculty Of Medicine, Samsun, Turkey

Scientific BACKGROUND: Carpal tunnel syndrome (CTS) is a common neuropathy caused by entrapment of the median nerve at the wrist. Although most cases are idiopathic, CTS may be rarely associated with space occupying lesions. Volar lunate dislocation is a rare cause of CTS and may be easily misdiagnosed especially in patients with multiple traumas or when inadequate radiographs are obtained.
CASE: A 29-year-old right handed man was complaining of numbness in thumb, index and middle fingers of the right hand for two months. He was diagnosed with CTS by clinically and electrophysiologicaly on the right hand. Enlarged median nerve caused by compression of dislocated lunate bone was demonstrated by radiological findings.
CONCLUSION: Possible structural lesions may exist in patients with atypical clinical features of CTS, and radiological imaging modalities would be needed for diagnosis.

Keywords: volar lunate dislocation, carpal tunnel syndrome, ultrasonography


Ayşe Bayrak, İlkay Koray Bayrak, Meltem Ceyhan, Hande Türker, Ufuk Sandıkçı. A Rare Cause of Carpal Tunnel Syndrome: Volar Lunate Dislocation. Turk J Neurol. 2008; 14(3): 217-220

Corresponding Author: Ayşe Bayrak, Türkiye


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