Factors that increase your
anterior cruciate ligament (ACL) injuries
sports that involve sudden changes in direction or
cutting around other players or obstacles, such as skiing, football, soccer,
basketball, baseball, and tennis.
- Making accidental movements that
may twist your knee, such as falling off a ladder, jumping from an extreme
height, stepping into a hole, or missing a step on a
- Losing muscle tone in legs (from aging or
- Having unbalanced leg muscle strength, such as if the
muscles in the front of your thigh (quadriceps) are stronger than the muscles
at the back of your thigh (hamstrings).
- Previous ACL injuries,
especially if your knee sometimes gives out or buckles (chronic ACL deficiency).
Women have more ACL injuries than men. In sports, women
injure their ACL up to 8 times as often as men. There are
several theories for the increased incidence in women
athletes, including differences in men's and women's bodies and how they use
muscles, and training that does not help make up for these differences.2, 3
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