超声检查在腕管综合征诊断中的应用

目的　探讨B型超声检查在诊断和治疗腕管综合征中的临床意义。方法　对5 0例临床及电生理检测确诊为腕管综合征的患者,应用B超对腕管进行检测,并与电生理结果和3 0例正常腕管B超结果进行相关性的对比研究。结果　B超检查CTS组屈肌支持带平均厚度为0 .3 9cm(正常为0 .3 3cm) ,钩骨钩平面正中神经平均扁平度为4.5 6(正常为3 .12 ) ,桡腕关节、豌豆骨、钩骨钩、钩骨远端四个平面正中神经横截面面积均大于对照组,两组差异有统计学意义。B超显示腕管内正中神经受压的程度,与电生理诊断结果相符。结论　B超检查对明确腕部疾病的诊断、正中神经受压程度均有参考价值,为临床提供了一种简单、可靠、无创的检测方法。

The application of ultrasonography in the diagnosis of carpal tunnel syndrome

Objective Our aim is to evaluate the diagnostic value of ultrasonography in patients with carpal tunnel syndrome (CTS). Methods 50 patients who had clinically and electrophysiologically confirmed CTS underwent ultrasonographic examination of the wrist. 30 asymptomatic normal wrists served as control. Data from the patient and the control groups were compared to determine the diagnostic parameters. Results The thickness of palmar retinaculum in CTS patients was 0.39 cm on average while that of normal control 0.33 cm. The flattening ratio of the median nerve at hamate hook level was 4.56 versus 3.12. Cross-sectional area of the median nerve at radiocarpal joint level, pisiform level, hamate hook level, and distal hamate level was larger in CTS patients than in normal individuals. There was high correlation between the electrophysiological results and ultrasonographic findings. Conclusion Ultrasonography examination is a valuable and practical tool in defining the cause and severity of CTS. It is simple, reliable and atraumatic.