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目的 探讨臀肌筋膜挛缩症的超声诊断价值。方法 用超声影像对 2 0 0 0年 1月至 2 0 0 3年 4月重庆医科大学儿童医院收治的 5 0例 (97侧 )臀肌筋膜挛缩症患儿的臀部肌肉进行检查 ,总结其声像图特征 ,测量挛缩带的宽度与厚度 ,并与手术发现进行对比。结果 超声检查轻型臀肌筋膜挛缩症病例大部分臀肌纤维显示清楚 ,肌纤维中可见异常强回声条结构 ,筋膜增厚 ,回声增强 ,挛缩带宽度小于 3cm ,厚度小于 1cm。重型病例臀肌肌纤维结构紊乱甚至消失 ,表现为肌层内强回声团块或斑块样结构 ,挛缩带宽度大于 3cm ,厚度大于 1cm。轻型与重型挛缩带厚度及宽度超声测值与手术测值比较差异显著 (P均 <0 0 1)。结论 超声检查在术前诊断中的作用是肯定的 ,挛缩带超声测值较手术测值偏小。
Objective To evaluate the diagnostic value of gluteal fascia contracture by ultrasonography. Methods Ultrasound images were used to examine the buttock muscles of 50 children (97 sides) with gluteal muscle contracture who were admitted to Children’s Hospital of Chongqing Medical University between January 2000 and April 2003. The results were summarized as follows: The sonographic features measure the width and thickness of the contracture bands and compare them with the surgical findings. Results Most of the gluteal muscle fibers of the patients with mild gluteal muscle fascia contracture were clearly diagnosed by ultrasonography. The abnormal echogenic bar was seen in the muscle fibers. The fascia was thicker and the echogenicity was enhanced. The width of contracture band was less than 3 cm and the thickness was less than 1 cm. Severe cases of gluteal muscle fiber structure disorder or even disappear, manifested as muscular intra-echo mass or plaque-like structure, contracture width greater than 3cm, thickness greater than 1cm. The thickness and width of the light and heavy contracture bands were significantly different between ultrasonic and surgical measurements (P <0.01). Conclusion The role of ultrasonography in the preoperative diagnosis is affirmative. The value of ultrasound in the contracture band is smaller than the surgical value.