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
Which among the following is not a feature of Unhappy triad of 0' Donoghue?
assistant
The correct answer is  Ans. is 'd' i.e., Fibular collateral ligament injury The most common mechanism of ligament disruption of knee is adduction (valgus), flexion and internal rotation offemur on tibia which usually occur in spos in which the foot is planted solidly on the ground and leg is twisted by rotating body (i.e., foot ball, soccer, basket ball, skiing). The medial structures medial (tibial) collateral ligament (MCL) and medial capsular ligament are first to fail, followed by ACL tears, if the force is of sufficient magnitude. The medial meniscus may be trapped between condyles and have a peripheral tear, thus producing unhappy triad of 0' Donoghue.