system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 20-year-old male comes into your office two days after falling during a pick up basketball game. The patient states that the lateral aspect of his knee collided with another player's knee. On exam, the patient's right knee appears the same size as his left knee without any swelling or effusion. The patient has intact sensation and strength in both lower extremities. The patient's right knee has no laxity upon varus stress test, but is more lax upon valgus stress test when compared to his left knee. Lachman's test and posterior drawer test both have firm endpoints without laxity. Which of the following structures has this patient injured?
assistant
Medial collateral ligament