Ashraf A R, Jali R, Moghtaderi A R, Yazdani A H
Shiraz University of Medical science, Iran.
Electromyogr Clin Neurophysiol. 2009 Jan-Feb;49(1):3-8.
To evaluate the diagnostic value of ultrasonography in patients with electrophysiologically confirmed carpal tunnel syndrome.
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.
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%.
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.
评估超声检查在经电生理确诊的腕管综合征患者中的诊断价值。
对70例经电生理确诊的腕管综合征患者的手腕以及80例正常手腕进行前瞻性超声研究。绘制正中神经超声测量的受试者工作特征曲线，以确定最适宜的截断值。
与对照组相比，发现腕管综合征患者正中神经的超声测量值显著增加，尤其是在横截面积方面（P<0.001）。根据受试者工作特征曲线结果，正中神经横截面积的最适宜截断值在腕中管水平获得，为9.3平方毫米，灵敏度为80%，特异度为77.5%。
对正中神经进行超声检查似乎是诊断腕管综合征很有前景的方法，可评估有临床症状和体征患者正中神经的形态学变化。需要开展更大样本量的进一步研究来证实我们的初步结果。
