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KMID : 1161920180150020101
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Journal of Medicine and Life Science
2018 Volume.15 No. 2 p.101 ~ p.104
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Ulnar nerve involvement in carpal tunnel syndrome
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Kang Sa-Yoon
Ko Keun-Hyuk
Kim Joong-Goo
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Abstract
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Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy caused by focal compression of the median nerve in the carpal tunnel. Distribution of paresthesia throughout the skin area without median nerve innervation is frequently seen in CTS. The aim of this study was to evaluate whether a dysfunction in sensory fibers of the ulnar nerve was present or not in hands with CTS. We retrospectively analyzed the recording of the subjects who were diagnosed with CTS within a one-year-period of time. We compared the results of sensory conduction studies of median nerve and ulnar nerve between normal hands and hands with CTS. There was no statistically significant difference on any sensory conduction parameters of ulnar nerve recorded on digit IV or digit V between the disease and control groups. The rates of conduction abnormalities of the ulnar sensory fibers were also similar in hands with CTS and in normal hands. The hands with CTS do not have an increased rate of conduction abnormalities of ulnar sensory fibers compared with the normal hands in our study population. Our study did not confirm the distortion of ulnar sensory fibers as a mechanism underlying the spread of paresthesia throughout the skin area without median nerve innervation in CTS.
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KEYWORD
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Carpal tunnel syndrome, Nerve conduction study, Paresthesia, Ulnar nerve
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