رياضي عنده تمزق في الرباط الصليبي الأمامي بالركبة بعد التواء. ما الأعراض المعتادة؟

An athlete has an anterior cruciate ligament tear after a twisting injury. What are the usual symptoms?

1. Gradual pain over years
2. Bilateral morning stiffness for an hour
3. A pop, rapid swelling, instability
4. A skin rash around the knee

Answer: C) A pop, rapid swelling, instability. ACL injuries usually occur with a twist, a pop, rapid swelling from haemarthrosis and a feeling of instability.