Unhappy Triad Of O'Donoghue

 

 In 1950, O'Donoghue described the unhappy triad as: 

(1) rupture of the medial collateral ligament, 

(2) damage to the medial meniscus 

(3) rupture of the anterior cruciate ligament. 

Visualizing O Donoghues Unhappy Triad 

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