Jorn L P, Fridén T, Ryd L, Lindstrand A
Lund University Hospital, Sweden.
J Bone Joint Surg Br. 1998 Jan;80(1):169-72. doi: 10.1302/0301-620x.80b1.7811.
We obtained simultaneous measurements of sagittal knee laxity in 12 consecutive patients after reconstruction of the anterior cruciate ligament (ACL), using the Stryker laxity tester and radiostereometric analysis (RSA). The mean anteroposterior (AP) displacement when a 90 N load was applied in both directions was 5.3 +/- 2.7 mm with RSA and 9.8 +/- 1.6 mm with the external device (p < 0.001). The corresponding measurements at a load of 180 N were 5.7 +/- 2.4 mm and 13.8 +/- 3.7 mm, respectively (p < 0.001). More than 50% of the sagittal knee movement, as measured by the external device at a load of 180 N, was not true femorotibial displacement of the joint but was due to soft-tissue deformation.
我们使用史赛克松弛度测试仪和放射立体测量分析（RSA），对12例连续的前交叉韧带（ACL）重建术后患者的膝关节矢状面松弛度进行了同步测量。在两个方向施加90 N负荷时，RSA测量的平均前后（AP）位移为5.3±2.7 mm，外部设备测量的为9.8±1.6 mm（p<0.001）。在180 N负荷下的相应测量值分别为5.7±2.4 mm和13.8±3.7 mm（p<0.001）。在180 N负荷下，通过外部设备测量，超过50%的膝关节矢状面运动并非关节真正的股胫位移，而是由于软组织变形所致。
