중증 수근관증후군에서 제2충양근과 제2골간근의 잠시 차이의 유용성
Diagnostic Usefulness of the Second Lumbrical and Interosseous Recording in Severe Carpal Tunnel Syndrome
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Objective: The purpose of this study was to compare the diagnostic usefulness of various nerve conduction studies when the routine median motor and sensory responses are absent. Method: Between January 2002 and March 2008, 30 hands of 25 patients were studied, with the median motor and sensory responses shown to be absent in the routine nerve conduction studies. We performed three nerve conduction studies, median-radial latency difference to the thumb, median-ulnar latency difference to the ring finger and the second lumbrical-interosseous latency comparison method. Results: The subjects’ (3 men and 27 women) ages ranged from 32 to 84 years. All hands had no median sensory response to the thumb and the ring finger. 5 hands had no median motor response to the second lumbrical muscle. 25 hands showed a significant prolongation of the lumbrical-interosseous latency difference (>0.4). In all the subjects, the needle EMG revealed abnormal spontaneous activity in the abductor pollicis brevis. Conclusion: The lumbrical-interosseous latency comparison method is helpful in patients with severe CTS and with no median motor and sensory responses.
Abstract
Objective: The purpose of this study was to compare the diagnostic usefulness of various nerve conduction studies when the routine median motor and sensory responses are absent. Method: Between January 2002 and March 2008, 30 hands of 25 patients were studied, with the median motor and sensory responses shown to be absent in the routine nerve conduction studies. We performed three nerve conduction studies, median-radial latency difference to the thumb, median-ulnar latency difference to the ring finger and the second lumbrical-interosseous latency comparison method. Results: The subjects’ (3 men and 27 women) ages ranged from 32 to 84 years. All hands had no median sensory response to the thumb and the ring finger. 5 hands had no median motor response to the second lumbrical muscle. 25 hands showed a significant prolongation of the lumbrical-interosseous latency difference (>0.4). In all the subjects, the needle EMG revealed abnormal spontaneous activity in the abductor pollicis brevis. Conclusion: The lumbrical-interosseous latency comparison method is helpful in patients with severe CTS and with no median motor and sensory responses.
참고문헌 (22)
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