后交叉韧带作为间接MR影像在前交叉韧带损伤中的诊断价值

Diagnostic Value of Posterior Cruciate Ligament(ACL) as an Indirect MR Image in Anterior Cruciate Ligament Injury

目的:评价后交叉韧带作为间接MR影像在前交叉韧带损伤中的诊断价值。方法:本文共选取采用MR影像诊断的前交叉韧带损伤患者共42例,MR检查工作,需要借助扫描仪及专用的线圈,采用双回波快速自旋回波序列,对后交叉韧带指标进行分析。结果:共有29例ACL损伤患者和38例ACL正常患者,PCL角<109°ACL损伤的敏感性为73.68%,特异性为86.21%。PCL线阳性的敏感性为84.21%,特异性为93.10%。共有29例ACL损伤患者和38例ACL正常患者,PCL角ACL损伤指数为101±10.2,ACL正常指数为115±9.7。PCL指数损伤指数为3.75±0.85,ACL正常指数为4.95±0.58。结论:PCL角<109°及PCL线阳性为ACL损伤提供了可靠的诊断依据,ACL损伤无法通过敏感性进行判断,PCL角度及指数越小,增加了ACL损伤的发生可能性,在对ACL损伤进行诊断时,需要借助关节镜。为了提升ACL损伤检出率,应结合ACL信号、角度及骨挫伤等直接或间接影像来完成诊断工作。

Objective： To evaluate the value of posterior cruciate ligament（ACL） as an indirect MR image in the diagnosis of anterior cruciate ligament injury. Methods： A total of 42 patients with anterior cruciate ligament injury diagnosed by MR imaging were selected in this study. The MR examination requires the help of scanner and special coils, and the double echo fast spin echo sequence is used to analyze the index of posterior cruciate ligament. Results： There were 29 patients with ACL injury and38 cases of normal ACL. The sensitivity of PCL angle109 degree ACL was 73.68% and the specificity was 86.21%. The sensitivity of the positive PCL line was 84.21% and the specificity was 93.10%. There were 29 patients with ACL injury and 38 cases of normal ACL. The PCL angle ACL injury index was101 ±10.2, and the normal ACL index was 115 ±9.7. The index of PCL index damage was 3.75 ±0.85,and the normal index of ACL was 4.95 ±0.58. Conclusion： The PCL angle less than 109 degrees and PCL positive lines provide a reliable basis for the diagnosis of ACL damage, ACL damage can not be judged by the sensitivity, PCL angle and the index is smaller, increases the possibility of ACL damage,in the diagnosis of ACL injury, need the help of arthroscopy. In order to improve the detection rate of ACL damage, direct or indirect images such as ACL signal, angle and bone contusion should be combined to complete the diagnosis.