The diagnostic value of ultrasonography in patients with electrophysiologicaly confirmed carpal tunnel syndrome.

Electromyography and clinical neurophysiology Pub Date : 2009-01-01

A R Ashraf, R Jali, A R Moghtaderi, A H Yazdani

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Abstract

Objective: To evaluate the diagnostic value of ultrasonography in patients with electrophysiologically confirmed carpal tunnel syndrome.

Design: A prospective ultrasonographic study of 70 wrists with electrophysiologically confirmed carpal tunnel syndrome and of 80 normal wrists. Receiver-operating-characteristics curves for the ultrasonographic measurements of median nerve were plotted to identify the most optimal cutoff values.

Results: The ultrasonographic measurements of median nerves were found to be increased significantly in patients with carpal tunnel syndrome when compared with controls, particularly in terms of cross-sectional area (P <0.001). According to receiver-operating-characteristics curve results, the most optimal cutoff value for the cross-sectional area of the median nerve was obtained at the level of middle carpal tunnel, which was 9.3 mm2, with a sensitivity of 80% and specificity of 77.5%.

Conclusion: Ultrasonographic examination of the median nerve seems to be a promising method in the diagnosis of carpal tunnel syndrome, evaluating the morphologic changes of the median nerve in patients with clinical signs and symptoms. Further studies with wider series are needed to confirm our preliminary results.

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超声对经电生理证实的腕管综合征的诊断价值。

目的:探讨超声对经电生理证实的腕管综合征的诊断价值。设计:对70例经电生理学证实为腕管综合征的腕关节和80例正常腕关节进行前瞻性超声检查。绘制正中神经超声测量接收机工作特性曲线，确定最佳截断值。结果:与对照组相比，腕管综合征患者正中神经的超声测量值明显增加，特别是在横截面积方面(P)。结论:超声检查正中神经似乎是诊断腕管综合征的一种很有前途的方法，可以评估有临床体征和症状的患者正中神经的形态学变化。我们的初步结果需要更广泛的研究来证实。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Electromyography and clinical neurophysiology

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