Signs and symptoms of a torn ACL include knee pain, knee instability, swelling, or stiffness of the knee. Hearing a pop at the time of injury is another possible sign. Other associated symptoms can include bruising, limping or gait disturbances, pain when standing, and difficulty walking.
Causes of a torn ACL
An injury, specifically, an injury resulting from a sudden change in direction or pivot against a locked knee, causes a torn ACL. Basketball, football, gymnastics, and soccer are sports that most often lead to a torn ACL.
Other Causes of Torn ACL Symptoms and Signs
- Difficulty Walking
- Hearing an Audible Pop at the Time of Injury
- Knee Bruising
- Knee Instability
- Knee Pain
- Knee Stiffness
- Pain When Standing
- Swollen Knee
- Unsteady Gait
Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.
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