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📌Concealed Chondral Delamination
- Concealed Chondral Delamination separates cartilage from the subchondral bone without an obvious overlying cartilage defect or fissure.
- Despite the absence of visible surface abnormalities, these lesions represent full-thickness cartilage abnormalities due to the instability of the delaminated cartilage.
✅ Characteristics
- The surface of the articular cartilage appears normal, complicating arthroscopic identification of the delamination beneath.
- These lesions often show subjacent marrow abnormalities, which can serve as a crucial diagnostic clue.
✅ Detection Challenges
- During arthroscopy, the articular cartilage surface may look entirely normal or exhibit only a subtle bulge.
- When the chondral surface is breached, the delamination often extends beyond the visible margins of the superficial defect.
- The initial overlying cartilage may remain intact, with tidemark separation occurring beyond the visible cartilage defect.
✅ Comparison with Cartilage Flaps
- Unlike concealed chondral delamination, cartilage flaps always show a violated cartilaginous surface.
References
- Magn Reson Imaging Clin N Am 19 (2011) 379–405.
- MRI Web Clinic – June 2021 Tissue Delamination.
- AJR 2017; 209:W317–W321
"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"
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#ConcealedChondralDelamination, #CartilageDamage, #MRI, #Arthroscopy, #ChondralDefect, #SubchondralBone, #Orthopedics, #Radiology, #SportsInjury, #MedicalImaging
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