When someone tears their ACL, they often hear a popping sound. The knee quickly swells and usually feels unstable. It is important to get the right treatment.
ACL injuries often occur during sports activities that place high stress on the knee, especially in sports with frequent turning or pivoting like soccer, football, lacrosse or basketball.
Side-view MRI of a healthy, intact ACL.
Side-view MRI of a completely torn ACL.
Anterior cruciate ligament (ACL) injury
ACL Injury: Does It Require Surgery? - OrthoInfo - AAOS
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