Fig. 4From: Patellofemoral kinematic characteristics in anterior cruciate ligament deficiency and reconstructionPatellofemoral kinematics (rotations) of ACLI, ACLD, and ACLR knees during ascending stairs. The values represent the motion of the patella with respect to the femur. Asterisk denotes statistically significant difference at P < 0.05. a Patellar Flexion; b Patellar External/Internal rotations; c Patellar Internal/External tiltBack to article page