Geometry, Not Gender: Study Shows Why Women, and Some Men, Are at Greater Risk for ACL Injuries

Link here. Excerpt:

'Much orthopaedic research has been devoted to determining why women are far more susceptible to knee ligament injuries than men. According to a new study, the answer may lie in geometry – the length and shape of a patient’s knee bone – more than gender.

Research recently published in the Journal of Bone and Joint Surgery (JBJS), compared magnetic resonance imaging (MRI) scans of male and female athletes with non-contact anterior cruciate ligament (ACL) injuries with those of athletes who participated in similar, at-risk sports but without a history of ligament injury.
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The study found that most of the women (those who had ACL injuries and those who did not) and only the ACL-injured men shared a common geometry on the outside of their knee joint: The upper part of their shin bone at the joint (tibial plateau) was much shorter and more rounded. This may help to explain why women have an ACL injury rate that is two-to-five times greater than that of men.
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The findings also may explain why women have a higher rate of ACL injuries, and yet the rate of re-injury is the same among men and women.'