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📌Signs of Osteochondral Lesion Instability in Adults
- The presence of any one sign indicates instability in adult OCD, with the most frequent finding being an underlying high-signal-intensity line.
✅ High-Signal-Intensity Rim
- A high-signal-intensity rim at the interface between the fragment and the adjacent bone on T2-weighted MR images.
✅Fluid-Filled Cysts
- Fluid-filled cysts beneath the lesion.
- Cysts surrounding a juvenile OCD lesion indicate instability only if they are multiple or larger than 5 mm.
✅ High-Signal-Intensity Line
- A high-signal-intensity line extending through the articular cartilage overlying the lesion.
✅ Focal Osteochondral Defect
- A focal osteochondral defect filled with joint fluid, indicating complete detachment of the fragment.
References
RadioGraphics 2018; 38:1478–1495
"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.
#OsteochondralLesion, #InstabilitySigns, #AdultOCD, #HighSignalIntensity, #FluidFilledCysts, #T2WeightedMRI, #ArticularCartilage, #JointFluid, #OsteochondralDefect, #RadiologyResearch
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