Figure 1: Measurements taken for the tibial footprint of the anterior cruciate ligament (ACL). A: the anterior end of the tibial footprint of ACL (yellow line with dot); B: posterior end of the tibial footprint of ACL (blue line with dot); C: center of the tibial footprint of ACL (yellow dot). D-A is the distance of the anterior end of the tibial footprint of ACL from the anterior end of the tibial plateau. D-B is distance of the posterior end of the tibial footprint of ACL from the anterior end of the tibial plateau. D-E is the anteroposterior length of the tibial plateau (line joining the most anterior point to the most posteriorly placed point on the tibial plateau indicating Staubli and Rauschning Line. ACL: anterior cruciate ligament