Gender Difference in Knee Kinematics of Double-limb Landing

We analyzed the double-limb landing action to investigate the cause of the high rate of anterior cruciate ligament injury among females. [Subjects The subjects 10 males and 10 females who were normally healthy. [Method Using the point cluster method, we measured the angle and direction of tibia rotation, and anterior displacement in double-limb landing. [Results The internal rotation angle of the females was significantly larger than that of the males, and maximum internal rotation occurred earlier than in the males, but a significant difference between male and female anterior displacement was not seen. [Conclusion From the results, we understand that impingement of the anterior and posterior cruciate ligaments occurs easily in females, and that the shear stress on the anterior cruciate ligament increases.