不同后交叉韧带指数测量方法对前交叉韧带损伤的诊断价值

目的:比较6种不同测量方法下的后交叉韧带(posterior cruciate ligament,PCL)指数(Index),分析验证其在前交叉韧带(anterior cruciate ligament,ACL)损伤中的临床诊断价值。方法:回顾性分析2018年5月至2022年3月收治的225例患者的膝关节MRI资料,年龄18～60岁,中位数32岁。根据ACL是否损伤,分为ACL正常组和ACL损伤组。在114例ACL损伤和111例ACL完整受试者的膝关节MRI矢状位图像上,测量MRI矢状位PCL在股骨附着点和胫骨附着点之间的直线距离(A)和该直线到矢状位图像上PCL弧形标记点之间的最大垂直距离(B),计算PCL Index并评估其对ACL损伤的诊断价值。结果:ACL正常组和ACL损伤组PCL Index1、2、3、6比较差异无统计学意义(P>0.05);两组PCL Index4、5比较,差异有统计学意义(P<0.001)。ACL正常组的PCL Index2、6与患者年龄呈负相关性(相关系数=-0.213,-0.189;P<0.05),ACL损伤组的PCL Index5与...

Study on the diagnostic value of different posterior cruciate ligament index measurement methods for anterior cruciate ligament injury

Objective To compare the posterior cruciate ligament(PCL) index with six different measurement methods,and analyze and verify its clinical diagnostic value in anterior cruciate ligament (ACL) injury. Methods The Magnetic resonance imaging (MRI) data of 225 knee joints in our hospital from May 2018 to March 2022 were retrospectively analyzed,aged from 18 to 60 years old,with a median of 32 years old. On the sagittal MRI images of 114 patients with ACL injury and 111 patients with intact ACL,Measure the straight-line distance (A) between the femoral attachment point and the tibial attachment point of the PCL on the MRI sagittal image and the maximum vertical distance (B) between the straight line and the arcuate mark point of the PCL on the sagittal image,calculate the PCL index and evaluate the diagnostic value of the PCL index for ACL injury. Results The PCL index of the ACL normal group and the ACL injury group were statistically described. There was no significant difference in PCL index 1,2,3 and 6 between the two groups(P>0.05). The difference of PCL index 4 and 5 between the two groups was statistically significant (P<0.001). This study only found that the PCL index 2,6 in the ACL normal group had a negative correlation with the patient''s age (correlation coefficient=-0.213,-0.819;P<0.05),and the PCL index 5 in the ACL injury group was significantly correlated with the patient''s body mass index(BMI)had a negative correlation (correlation coefficient=-0.277,P<0.05). Conclusion The change of PCL index is helpful for the diagnosis of ACL injury,PCL index 4 and 5 can be used as effective reference indexes for diagnosing ACL injury in clinic.