Siwiński D, Ziemiański A
Department of Surgery, Karol Marcinkowski University of Medical Sciences, Poznań, Poland.
Arch Orthop Trauma Surg. 1998;118(1-2):116-8. doi: 10.1007/s004020050328.
Assessment of the diagnostic value of the posterior cruciate ligament index (PCL index) for injuries of the anterior cruciate ligament (ACL) was done. Magnetic resonance imaging (MRI) and knee joint arthroscopy of 170 patients were evaluated. The shortest distance between the femoral and tibial attachment of PCL (x) and the distance from that line to the tip of the arc marked by the PCL (y) on the sagittal plane images were measured. The quotient of these two parameters (x/y) defined the PCL index. In 100 patients, for whom arthroscopy ruled out ACL injury, the mean PCL index was 5.01 +/- 0.76. In 30 patients in whom arthroscopy showed total ACL rupture, the mean PCL index was 2.88 +/- 0.74, and in 10 patients with ACL partial rupture, 3.09 +/- 0.23. The conclusion is that injury to the ACL changes the PCL index markedly. In diagnostically unreliable MR images, deterioration of the PCL index could help in the diagnosis of ACL injury.
对后交叉韧带指数（PCL指数）在前交叉韧带（ACL）损伤中的诊断价值进行了评估。对170例患者的磁共振成像（MRI）和膝关节镜检查进行了评估。在矢状面图像上测量后交叉韧带股骨和胫骨附着点之间的最短距离（x）以及从该线到后交叉韧带标记弧线顶端的距离（y）。这两个参数的商（x/y）定义为PCL指数。在100例经关节镜检查排除ACL损伤的患者中，平均PCL指数为5.01±0.76。在30例经关节镜检查显示ACL完全断裂的患者中，平均PCL指数为2.88±0.74，在10例ACL部分断裂的患者中，为3.09±0.23。结论是ACL损伤会显著改变PCL指数。在诊断不可靠的MR图像中，PCL指数的恶化有助于ACL损伤的诊断。
