(Fig 5-B.31) Subchondral Fracture with Epiphyseal Collapse: Part 1

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MSK MRI Jee Eun Lee

Visualizing MSK Radiology: A Practical Guide to Radiology Mastery

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📌 Subchondral Fracture with Epiphyseal Collapse: deformity of the subchondral bone plate

 

• In the previous session, we discussed various MRI findings of SFI, categorizing them into two groups: those without epiphyseal collapse and those with epiphyseal collapse.

• This session will focus on cases showing epiphyseal collapse along with deformity of the subchondral bone plate. 
• Three major imaging findings are observed in these cases:

 

Subtle Flattening of the Articular Surface

Subchondral Area of Low Signal Intensity

Subchondral Hypointense Line

 

Additional Notes

• It is important to understand that the terms “epiphyseal collapse” and “articular collapse” are both acceptable as descriptive terms but are not specific to any single condition.
• Collapse can occur in osteonecrosis, SIF, and rapidly destructive osteoarthritis. 
• The term “collapse” should be used to describe a fracture of the subchondral bone plate occurring in an atraumatic setting. For acute trauma, the preferred term is “osteochondral fracture.”

 

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#MRI #Radiology #SFI #EpiphysealCollapse #SubchondralBone #Osteonecrosis #Osteoarthritis #ArticularCollapse #MedicalImaging #MusculoskeletalRadiology