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자료유형
학술저널
저자정보
저널정보
대한재활의학회 Annals of Rehabilitation Medicine Annals of Rehabilitation Medicine 제35권 제1호
발행연도
2011.1
수록면
84 - 90 (7page)

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Objective To compare the diagnostic accuracy of ultrasonography(US) and electrophysiologic study in patients with carpal tunnel syndrome (CTS). Method Two hundred twenty-seven hands in patients and 40 hand in healthy control group were used. Patients were diagnosed clinically with CTS. All groups had nerve conduction study (NCS) and sonographic measurement of the cross-sectional area (CSA) of the median nerve. Using the receiver operating characteristic curve, the optimal cutoff value was obtained and the sensitivity and specificity was evaluated. The correlation between the Hi-Ob score and the electrophysiologic severity, Hi-Ob score and CSA of the median nerve, and between the electrophysiologic severity and CSA were assessed. Results The cutoff value of the difference of median sensory latency (DMSL) was 1.55 ms with a sensitivity and specificity of 94.7% and 92.3% respectively. The cutoff value of CSA was 9.5 mm2, had a sensitivity of 85.5% and a specificity of 92.3%. In mild CTS, NCS showed a sensitivity of 92.1% and CSA showed a sensitivity of 81.2%. The electrophysiologic severity and Hi-Ob score appeared to show a significant positive correlation (r=0.34, p<0.01), and as the Hi-Ob score increased, the CSA was increased (r=0.54, p<0.01). The increase in electrophysiologic severity and the CSA also showed a significant correlation (r=0.33, p<0.01) There was bifurcation of the nerve in 9 hands, persistent median artery in 4 hands and cyst in 1 hands. And tenosynovitis was observed in 1 hands. Conclusion In clinical CTS, electrophysiologic study showed higher sensitivity than US. But US can give us anatomical informations.

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