De Smet A A
Skeletal Radiol. 1985;14(4):280-5. doi: 10.1007/BF00352620.
The presence or absence of a meniscal tear was established in 340 out of 475 consecutive patients who had double contrast knee arthrograms. The accuracy in these 340 cases was 95% for both the medial and lateral menisci although the specificity for lateral tears was only 0.64. Analysis of the pattern of arthrographic abnormalities revealed that both medial and lateral tears usually involved the posterior horn of the meniscus. Posterior horn abnormalities rarely caused a false positive diagnosis of a meniscal tear. In contrast, isolated blunting of the anterior horn of either the lateral or medial meniscus was an unreliable sign of a tear and accounted for many of the false positive diagnoses. It is concluded that careful attention to the posterior horn of each meniscus is essential for accurate arthrographic diagnosis of a meniscal tear.
在475例连续接受双膝造影的患者中，对其中340例患者确定了半月板撕裂的有无。在这340例病例中，内侧和外侧半月板的诊断准确率均为95%，尽管外侧撕裂的特异性仅为0.64。对造影异常模式的分析显示，内侧和外侧撕裂通常累及半月板后角。后角异常很少导致半月板撕裂的假阳性诊断。相比之下，外侧或内侧半月板前角单独变钝是撕裂的不可靠征象，也是许多假阳性诊断的原因。结论是，在进行半月板撕裂的造影诊断时，仔细观察每个半月板的后角至关重要。
