摘要目的：探讨采用MRI对膝关节原发性骨坏死进行诊断的临床价值。方法随机选取平舆县人民医院2011年9月至2013年11月收治的确诊为膝关节原发性骨坏死患者64例，分别对其膝关节进行X线平扫、CT检查和MRI检查，对患者的影像学检查资料进行回顾性分析。结果64例膝关节原发性坏死患者的MRI扫描病灶检出率远高于X线平片和CT检查，差异有统计学意义( P<0．05)。结论对膝关节原发性骨坏死患者进行MRI检查，有利于对病变部位进行全面观察，有助于提高临床诊断检查率，为治疗提供可靠建议。

abstractsObjective To investigate the clinical value of MRI scans in the diagnosis of patients with primary bone necrosis of knee joint. Methods Sixty-four patients with primary bone necrosis of knee joint from September 2011 to November 2013 were randomly selected, then made X-ray, CT and MRI examination for their knees. The imaging data were analyzed retrospectively. Results For 64 pa-tients with primary bone necrosis of knee joint, the lesion detection rate of MRI scans was much higher than that of the X-ray and CT scan, the differences were significant ( P <0. 05 ) . Conclusions MRI scans for patients with primary bone necrosis of knee joint is in favor of a comprehensive observation of the lesion, It can help to improve the rate of clinical diagnostic tests, and provide reliable recommenda-tions for the treatment.