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There are around 200,000 ACL tears each year in the United States. ACL tears newly occur in about 69 per 100,000 per year with rates in males of 82 per 100,000 and females of 59 per 100,000. [65] When breaking down rates based on age and sex, females between the ages of 14 and 18 had the highest rates of injury with 227.6 per 100,000.
Most ACL tears are a result of a non-contact mechanism such as a sudden change in a direction causing the knee to rotate inward. As the knee rotates inward, additional strain is placed on the ACL, since the femur and tibia, which are the two bones that articulate together forming the knee joint, move in opposite directions, causing the ACL to tear.
ACL injuries can be categorized into groups- contact and non-contact based on the nature of the injury [6] Contact injuries occur when a person or object come into contact with the knee causing the ligament to tear. However, non-contact tears typically occur during the following movements: decelerating, cutting, or landing from a jump.
ACL reconstruction can protect the meniscus from injury, doctors say. A weak knee can also lead to another ACL tear. In fact, 11 patients (14%) in the new study re-injured their ACL.
Injuries to the anterior cruciate ligament, aka the ACL, occur commonly in sports. However, research shows that female athletes suffer significantly more ACL injuries than their male counterparts.
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Intrinsic or personal factors that could put an athlete at higher risk for injury could be gender. For example, female athletes are typically more prone to injuries such as ACL tears. There is approximately a 1.6-fold greater rate of ACL tears per athletic exposure in high school female athletes than in males of the same age range. [24]
Sure, the moment everyone wants to talk about is the ACL tear in June that cut her rookie year with the Los Angeles Sparks short. But Cameron, who just turned 23, is most proud of all the moments ...