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MRI表现诊断髌骨软化症的可信性研究 被引量:4

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摘要 目的:探讨MRI对髌骨软化症诊断的可靠性。方法:共纳入患有膝前疼痛经临床初步诊断为髌骨软化症的中青年病人112例,先行膝关节MRI检查,再行膝关节镜检查验证,并将MRI所示髌骨损伤情况与关节镜所见比较。结果:关节镜检查证实有膝前疼痛表现的112例患者中,存在髌骨软化者50例(45%),滑膜肥厚50例,半月板撕裂8例,股胫关节软骨损伤8例和未见形态异常者12例。1.5T MRI检出髌骨软化症的阳性率为75%(95%可信区间,53%~89%),阴性率为72%(95%可信区间,56%~84%),其敏感性为60%(95%可信区间,41%~77%),特异性为84%(95%可信区间,2%~49%),诊断准确率为73%(95%可信区间,60%~83%)。Ⅰ度损伤的敏感度为13%(95%可信区间,2%~49%),Ⅱ、Ⅲ或Ⅳ度损伤的敏感度为83%(95%可信区间,59%~94%)。结论:根据临床症状和目前物理检查方法不能诊断髌骨软化症。1.5T的MRI诊断Ⅰ度软骨损伤的敏感度较低,而对Ⅱ、Ⅲ或Ⅳ度损伤的敏感度很高。MRI检查可以作为较重髌骨软化症的一种诊断方法。
出处 《中医正骨》 2012年第11期22-25,共4页 The Journal of Traditional Chinese Orthopedics and Traumatology
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