目的　 探讨高频超声对偏瘫继发复合性区域疼痛综合征患者肱二头肌长头肌腱、肱骨结节间沟在病程变化检测中的临床应用。方法　 2013年2月至2015年10月，对本院55例偏瘫继发复合性区域疼痛综合征患者健、患侧肩部肱二头肌长头肌腱厚度、横截面积以及肱骨结节间沟宽度、深度进行测量，并随着临床分期进展进行对照研究。结果　 健侧与患侧相比，肱二头肌长头肌腱的厚度、横截面积以及结节间沟的宽度、深度在Ⅰ期无显著性差异(P>0.05)，在Ⅱ期、Ⅲ期时患侧均小于健侧(t>2.055, P<0.05)。结论　 高频超声能清晰显示偏瘫继发复合性区域疼痛综合征患者的肱二头肌长头肌腱、肱骨结节间沟，并检测到二者在形态学上的变化，可以为康复治疗提供指导。

Objective To evaluate the application of high-frequency ultrasound in the detection of long head of biceps tendon and bicipital groove in patients with hemiplegia-secondary complex regional pain syndrome. Methods From February, 2013 to October, 2015, 55 patients with hemiplegia-secondary complex regional pain syndrome were enrolled. The thickness and cross-sectional area of long head of biceps tendon, and the width and depth of bicipital groove in healthy and affected sides were measured and analyzed comparatively with the clinical stages. Results The thickness and cross-sectional area of long head of biceps tendon became thin and reduced significantly, and the width and depth of bicipital groove became narrow and shallow in the affected sides at stages II and III (t>2.055, P<0.05); while no significant difference was found between two sides at stage I (P>0.05). Conclusion High-frequency ultrasound could clearly display the long head of biceps tendon and bicipital groove, and detect the morphological change, that can be helpful for rehabilitation.