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📌 Post-TKA Synovitis
✅ Periprosthetic Infection
- The MR imaging findings of a lamellated synovitis with hyperintense signal, extracapsular soft-tissue edema, extracapsular collections, and reactive lymphadenopathy carry a high likelihood for the presence of a periprosthetic joint infection.
✅ Polyethylene Wear–Induced Synovitis
- At MR imaging, polyethylene wear–induced synovitis is typically characterized by synovial thickening with dense synovial proliferation and debris with low-to-intermediate signal intensity (similar to the intensity of skeletal muscle), with variable amounts of interspersed fluid and joint distention.
✅ Hemarthrosis Occurring Late After Total Knee Arthroplasty
- The most common surgical and histologic findings of hemarthrosis occurring late after total knee arthroplasty include hypervascular and proliferative synovium with signs of arthroplasty component impingement, which is more prone to trauma and more likely to bleed.
References
RadioGraphics 2015; 35:1483–1501
"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.
#PeriprostheticInfection, #MRImaging, #Synovitis, #PolyethyleneWear, #Hemarthrosis, #KneeArthroplasty, #SoftTissueEdema, #ReactiveLymphadenopathy, #JointDistention, #HypervascularSynovium
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| (Fig 5-D.17) Periprosthetic Infection - Abscess (0) | 2024.07.21 |
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