(Fig 5-A.13) Fissure with Chondral Flap

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📌 Fissure with Chondral Flap

 

✅ Chondral Fissures and Delamination

• Chondral fissures may result in delamination of the cartilage and chondral flap lesions if there is extension of the fissure parallel to the surface of the bone.
• MRI Appearance of Chondral Delamination: With MRI, chondral delamination usually appears as a thin line of near-fluid signal intensity beneath the deep zone of articular cartilage, at the tidemark, separating the noncalcified cartilage from the underlying bone and calcified cartilage.

 

✅ Transverse Region of Failure

• A transversely oriented region of failure in the midzone of articular cartilage is sometimes seen in association with chondral fissures on MRI. 
• The transversely-oriented region of failure that is sometimes seen in the midzone of articular cartilage may represent delamination between pathologically disorganized collagen fibers.

 

References

• J Knee Surg. 2020 November ; 33(11): 1088–1099
• MRI Web Clinic – June 2021 Tissue Delamination

 

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#ChondralFissure, #ChondralFlap, #CartilageDelamination, #MRIFindings, #ArticularCartilage, #Tidemark, #CartilagePathology, #OrthopedicMRI, #Radiology, #KneeSurgery