Fig. 2From: A modified anatomical posterior cruciate ligament reconstruction technique using the posterior septum and posterior capsule as landmarks to position the low tibial tunnelThe distance between the center of SP tunnel with bony landmarks. 2A: The distance between the center of SP tunnel and the champagne glass drop-off; 2B: The distance between the center of SP tunnel and the articular surface of tibial plateau. O the center of SP tunnel, OA The perpendicular line from the center of SP tunnel to the champagne glass drop-off, XY the articular surface of tibial plateau, ON perpendicular line from the center of SP tunnel to the articular surface of tibial plateau)Back to article page