Expansion
Anterior cruciate ligament, medial collateral ligament and medial meniscus
Expansion
The unhappy (O’Donoghue) triad, from a force to the outside of a planted knee:
- Anterior cruciate ligament (ACL)
- Medial collateral ligament (MCL)
- Medial meniscus (classically; some studies find the lateral meniscus is more often involved)
The medial collateral ligament is attached to the medial meniscus, which is why they tend to tear together.