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目的探究MRI在测量膝关节软骨缺损面积的诊断价值。方法对2010年5月至2015年5月期间收治的膝关节缺损病变患者75例(75膝)分别采用磁共振成像(MRI)和关节镜检测,观察对比两种检查方法测量膝关节软骨缺损面积,并分析两种检查方法的相关性。结果 MRI平均每膝软骨缺损面积为(2.1±1.2)cm2,明显少于关节镜测量的(2.9±1.4)cm2(t=3.431,P<0.01)。MRI的评估结果低于关节镜的测量结果,平均差值为(1.6±0.8)cm2,MRI测量结果是关节镜测量结果的(71.6±10.2)%。经Pearson相关分析,内侧股骨髁、外侧股骨髁、股骨滑车、髌骨关节面软骨缺损面积相关系数分别为0.87、0.81、0.75、0.71,P=0.000。结论 MRI检测膝关节软骨缺损病变的数目准确性较高,但在检测缺损面积时,大部分MRI检测结果低于关节镜检测结果,需根据临床病情结合其他检测手段进一步检测。
Objective To investigate the diagnostic value of MRI in measuring the area of cartilage defects in the knee. Methods Seventy-five patients (75 knees) with knee joint defect who were treated between May 2010 and May 2015 were examined by MRI and arthroscopy. The knee joint cartilage defect area , And analyzed the correlation between the two test methods. Results The average area of cartilage defect per knee was (2.1 ± 1.2) cm2, which was significantly lower than that of arthroscopy (2.9 ± 1.4) cm2 (t = 3.431, P <0.01). The results of MRI were lower than those of arthroscopy, the average difference was (1.6 ± 0.8) cm2, and the MRI measurement was (71.6 ± 10.2)% of the results of arthroscopy. Pearson correlation analysis, the medial femoral condyle, lateral femoral condyle, femur pulley, patellar articular cartilage defect area correlation coefficients were 0.87,0.81,0.75,0.71, P = 0.000. Conclusion MRI is more accurate in detecting the number of cartilage defects in the knee. However, the majority of MRI findings are lower than the results of arthroscopy in detecting the defect area, and the MRI examination should be based on clinical conditions and other tests.