Electrophysiologic Changes in the Carpal Tunnel Syndrome after Carpal Tunnel Release |
Poong Taek Kim,Yang Soo Lee,Ik Dong Kim,Byung Chul Park,Cheol Hyeon Kim |
수근관 증후군에서 술전후 전기생리학적 검사 소견의 변화 |
김풍택,이양수,김익동,박병철,김철현 |
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Abstract |
Surgical decompression for carpal tunnel syndrome is generally efficacious. However, a small but significant number of patients have persistent symptoms that suggest median neuropathy or recurrent carpal tunnel syndrome. The clinician may use postoperative electrophysiologic studies to reevaluate the patient with persistent symptoms, assuming that electrophysiologic abnormalities improve or return to normal after surgical decompression. But the conclusions of previous postoperative electromyographic studies are somewhat contradictory. This study was designed to evaluate electrophysiologic changes in patient with improved Levine's symptom sevirity scale after carpal tunnel release. We also examined two point discrimination, grip strength, and pinch strength. Twenty four hands of carpal tunnel syndrome in sixteen patients, aged from 31 to 59 years old, were evaluated a median of 3.5 months postoperatively. The results were as follows : Two point discrimination, median motor & sensory latencey, sensory amplitude, median-ulnar motor and sensory latency difference and median-ulanr sensory ampltiude ratio were significantly (p<0.01) changed after carpal tunnel release. But somewhat contradictory results were seen in median sensory amplitude (4 hands), median-ulnar sensory amplitude ratio (4 hands), and median-ulnar motor latency difference (2 hands). It is concluded that the measurements of the median sensory latency and median-ulnar sensory latency difference reflect the progress of clinical improvement., more accurately. |
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