📌 Case study: O'Donoghue's Triad
- The O'Donoghue unhappy triad refers to the combined injury of the anterior cruciate ligament (ACL), medial collateral ligament (MCL), and meniscus
- Originally described with medial meniscal injury, but lateral meniscal tears more common when ACL and MCL injuries coexist
- Occurs from contact or non-contact injuries
✅ MCL Injury Findings
- Thickening of MCL
- Increased internal signal intensity
- Surrounding soft tissue edema
- Case shown is Grade 2 MCL injury
✅ Meniscal Tear Findings
- Linear high T2 signal through meniscus from superior to inferior articular surface
- Represents complete longitudinal vertical tear in red-red zone
- Classified as ramp lesion subtype 4A
✅ ACL Injury Findings
- Irregular, cloud-like area of high signal in ACL substance
- Loss of normal striated fiber appearance
- Indicates complete tear
"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"
© 2022 MSK MRI Jee Eun Lee All Rights Reserved.
No unauthorized reproduction, redistribution, or use for AI training.
#MCLinjury, #POL, #Posteriorobliqueligament, #kneeMRI, #ACLtear, #MCLinjury, #AMRI, #kneeinstability, #ACLInjuries #MeniscalTears
'✅ Knee MRI Mastery > Chap 3.Collateral Ligaments' 카테고리의 다른 글
| (Fig 3-A.45) Posteromedial Knee Friction Syndrome (0) | 2024.05.14 |
|---|---|
| (Fig 3-A.44) O’Donoghue’s Pentad Lesion (0) | 2024.05.13 |
| (Fig 3-A.42) Oblique Popliteal Ligament Injury (0) | 2024.05.13 |
| (Fig 3-A.41) Oblique Popliteal Ligament MRI Anatomy (0) | 2024.05.13 |
| (Fig 3-A.40) Semimembranosus Tendon and OPL Anatomy (0) | 2024.05.13 |
