The Rate of Non-Contact ACL Injuries Is Much Higher in Physically

Multiple Choice

The rate of non-contact ACL injuries is much higher in physically active women than men. Which of the following is NOT considered a valid explanation for the gender-based difference in the ACL injury rate?

A) High estrogen levels in females relax supportive knee ligaments.
B) Women have a wider pelvis, changing the angle of the femur as it enters the knee.
C) The quadriceps:hamstrings strength ratio is more in balance in females.
D) Men contract their hamstrings earlier when landing a jump thus stabilizing the knee.
E) Female's playing posture is more upright making the knee more vulnerable.