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KMID : 0860920050070010059
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Journal of the Korean Association EMG-Electrodiagnostic Medicine
2005 Volume.7 No. 1 p.59 ~ p.63
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Cubital Tunnel Syndrome Secondary to the Anconeus Epitrochlearis Muscle
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Kim Chul-Hyun
Byun Seung-Deuk
Noh Jae-Hyun
Lee Yong-Boem
Lee Yang-Soo
Kim Poong-Taek
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Abstract
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Many causes of ulnar neuropathy around elbow have been identified. The anomalous anconeus epitrochlearis muscle has rarely been implicated as a causative factor in ulnar nerve compression. We experienced two cases of ulnar neuropathy around elbow secondary to the anconeus epitrochlearis muscle. We checked short segmental ulnar nerve conduction study which was more sensitive than routine segmental ulnar nerve conduction study before operation. There were significant slowing of conduction velocity in segments between 1cm below and 3cm above the medial epicondyle. In operation field, we found a group of muscle fibers acrossed the ulnar nerve from medial epicondyle to olecranon, which was anconeus epitrochlearis. Decompressive operations were done for each cases. After operation, we rechecked short segmental ulnar nerve conduction study compared to previous values, and got better results.
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KEYWORD
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Ulnar neuropathy, Anconeus epitrochlearis, Short segmental ulnar nerve conduction study, Elbow
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