If a football player in the emergency room displays a positive anterior drawer test that becomes negative if the knee is internally or externally rotated, which of the following has ruptured?

Question

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If a football player in the emergency room displays a positive anterior drawer test that becomes negative if the knee is internally or externally rotated, the anterior cruciate ligament has ruptured. In the anterior drawer test, the patient's tibia is pulled forward and anterior tibial displacement reveals rupture of the anterior cruciate ligament.

If a Football Player in the Emergency Room Displays a Positive