📌O'Donoghue's Unhappy Triad
- The O'Donoghue unhappy triad refers to a combined injury involving three specific structures: the anterior cruciate ligament (ACL), the medial collateral ligament (MCL), and the medial meniscus.
📌Expansion to Tetrad and Pentad Lesions
- Tetrad Lesion: When there is an additional injury to the Medial Patellofemoral Ligament (MPFL), the condition escalates to what is termed a tetrad lesion.
- Pentad Lesion: Further complexity is added with a pentad lesion, which includes the injuries of a tetrad lesion plus an additional injury to the lateral meniscus or popliteomeniscal fascicles.
MRI Web Clinic - June 2018 Medial Supporting Structures of the Knee with Emphasis on the Medial Collateral Ligament
"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"
© 2022 MSK MRI Jee Eun Lee All Rights Reserved.
"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"
© 2022 MSK MRI Jee Eun Lee All Rights Reserved.
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