Close
MR images demonstrate O'Donoghue's unhappy triad.
- wavy anterior cruciate ligament with interrupted proximal attachment, reflecting complete tear
- grade III tear of medial collateral ligament, with surrounding soft tissue oedema
- horizontal tear of the posterior horn of medial meniscus reaching the inferior articular surface
Mild knee effusion.
Bone marrow oedema of the lateral tibial plateau and lateral femoral condyle.