半月板损伤超声诊断价值的探讨

Diagnosis value of ultrasonography in meniscus lesions

目的探讨超声检查对膝关节半月板损伤的诊断价值。方法对31例33个膝关节66个半月板术前超声检查结果与关节镜及手术结果进行对照分析。结果超声诊断半月板损伤准确性92.4%,敏感性94.1%,特异性90.6%,阳性预测值91.4%,阴性预测值93.5%,内侧半月板损伤准确性87.9%,外侧半月板损伤准确性97.0%。超声对损伤定位准确性为85.3%,对损伤类型判断的准确性为76.5%。以半月板体部最窄处宽度>15mm为标准判断盘状半月板,准确性88.9%。结论超声检查无创、方便,诊断半月板损伤准确性较高,可作为诊断半月板损伤的一种重要的辅助检查方法。

Objective To investigate the diagnosis value of sonography for the meniscus lesions. Methods Sixty-six menisci of thirty-one patients examined by ultrasonography were compared with the arthroscopic operation or surgical findings. Results For all meniscal lesions,the ultrasound detecting gave an accuracy of (92.4)%,sensitivity of (94.1)%,specificity of (90.6)%,positive predictive value of (91.4)%,negative predictive value of (93.5)%.For medial meniscal lesions,the ultrasonography gave an accuracy of (87.9)%.For lateral meniscal lesions,the ultrasonography gave an accuracy of (97.0)%. The accuracies of locating the meniscal lesions and identifying the meniscal type were (85.3)% and (76.5)%,respectively.Using the miniwidth of meniscus at the midbody exceeds 15 mm as criterion,the accuracy of sonography indicating discoid meniscus was (88.9)%. Conclusions Ultrasonography can make relatively accurate diagnosis for meniscus lesions with its advantage of noninvasive convenience,and can be used as an auxiliary means to detect meniscus lesions.