Value of passive anterior tibial subluxation on axial MRI in identifying anterior cruciate ligament functional deficiency in patients with advanced anteromedial osteoarthritis of the knee: a case-control study

摘要

Measurements of the medial and lateral PATS. a Axial plane on MRI showing the line (blue) connecting the most posterior points of the tibial plateau. b After the most posterior points of femoral condyles are determined, the distance from both condyles to the blue line are measured. The length of the yellow line and the red line indicate the medial PATS and the lateral PATS, respectively. In this case, the value of medial PATS is negative (posterior translation), while the value of lateral PATS is positive (anterior translation). PATS, passive anterior tibial subluxation