1️⃣ Meniscal Ramp Lesion
- Ramp lesions refer to injuries affecting the posterior horn of the medial meniscus in the setting of ACL tears.
- A high signal at the meniscocapsular junction without a frank fluid cleft indicates a sprain rather than a true separation.
2️⃣ False Positive Ramp Lesions
- Edema affecting the posterior capsule reflects pericapsular soft tissue damage; however, edema alone is insufficient for diagnosing a ramp lesion.
- Skeletal Radiology (2018) 47:1683–1689
3️⃣ Diagnostic Challenges and Criteria
- No single MRI criterion achieves 100% sensitivity or specificity for diagnosing meniscal ramp lesions.
- The junctional fluid-like signal was found to be highly specific for meniscal ramp lesions, boasting a PPV (Positive Predictive Value) of 92.9%.
- AJR American Journal of Roentgenology, March 2021; 216(3):791-798.
© 2022 MSK MRI Jee Eun Lee All Rights Reserved.
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#VisualizingMSK #ACLinjuries #KneeMRI #ACLtear #Ramplesion #Meniscustear
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