A 17-year-old male complains of severe right knee pain.He was playing football when he heard a "pop" at the moment of being tackled and his knee "gave away" from under him.On physical examination,there is right knee swelling and decreased range of motion.There is a positive anterior drawer sign.These findings indicate:

Question

Quizplus · Accepted Answer

The "pop" sound and the giving away of the knee suggest a ligament injury. The positive anterior drawer sign is a test used to diagnose anterior cruciate ligament (ACL) injury. The swelling and restricted range of motion also support the diagnosis of a knee ligament injury.

A 17-Year-Old Male Complains of Severe Right Knee Pain