Objective To investigate the diagnostic value of X-ray plain film, CT and MR imaging in early avascular necrosis of the femoral head. Methods Forty patients with early avascular necrosis of the femoral head admitted to our hospital (January 2015 to January 2017) were enrolled in this study. All 40 subjects in this group underwent X-ray, CT and MR imaging. Three diagnostic methods for the diagnosis of different stages of avascular necrosis of the femoral head. Results The coincidence rate of the diagnosis between the CT group and the MR group was 42.50％、55.00％. The difference was not statistically significant (χ2=3.127 0, P＞0.05). The coincidence rate of CT diagnosis between the CT group and the MR group was 42.50％, 55.00％ was significantly higher than 25.00％ of the X-ray film group, the difference was statistically significant (χ2=6.848 5, 18.750 0, P＜0.05); X-ray plain film group, CT examination group, MR examination group II stage diagnostic coincidence rate, coincidence rate of stage III diagnosis was 25.00％ 、25.00％ 、30.00％, 7.50％、10.00％、12.50％. The difference was not obvious, and there was no statistical significance (χ2=1.000 0, 0.627 0, 0.627 0, 0.391 4, 1.388 9, 0.313 0, P＞0.05). The total diagnostic coincidence rate of the MR group was97.50％, which was significantly higher than that of the X-ray film group and the CT group (57.50％, 77.50％). The difference was statistically significant (χ2=45.878 1, 18.285 7, P＜0.05); The diagnostic coincidence rate was 77.50％, which was significantly higher than that of the X-ray plain film group (57.50％). The difference was statistically significant (χ2=9.116 8, P＜0.05). Conclusion The coincidence rate of total CT diagnosis is higher than that of X-ray film, and the coincidence rate of MR diagnosis is higher than that of CT.%目的 探讨早期股骨头缺血坏死的X线平片、CT、MR影像诊断价值对比.方法 选取该院2015年1月-2017年1月收治的早期股骨头缺血坏死患者40例为研究对象,该组40例研究对象均行X线平片、CT、MR影像检查,对比三种诊断方法股骨头缺血坏死不同分期的诊断符合率.结果 CT检查组与MR检查组Ⅰ期诊断符合率42.50％、55.00％对比差异无统计学意义(χ2=3.127 0,P＞0.05);CT检查组与MR检查组Ⅰ期诊断符合率42.50％、55.00％明显高于X线平片组25.00％,差异有统计学意义(χ2=6.848 5、18.750 0,P＜0.05);X线平片组、CT检查组、MR检查组Ⅱ期诊断符合率、Ⅲ期诊断符合率25.00％、25.00％、30.00％,7.50％、10.00％、12.50％对比差异无统计学意义(χ2=1.000 0、0.627 0、0.627 0、0.391 4、1.388 9、0.313 0,P＞0.05);MR检查组总诊断符合率97.50％明显高于X线平片组、CT检查组57.50％、77.50％,差异有统计学意义(χ2=45.878 1、18.285 7,P＜0.05);CT检查组总诊断符合率77.50％明显高于X线平片组57.50％,差异有统计学意义(χ2=9.116 8,P＜0.05).结论 CT检查总诊断符合率高于X线平片,而MR检查总诊断符合率高于又CT检查.
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