(Fig 4-B.17) Subchondral Fracture vs. Osgood Schlatter Disease

https://youtu.be/JCptflC3M2I

https://youtu.be/w63GyfUeIyw

 

 

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📌 Cartilaginous Stage of Osgood Schlatter Disease

✅ During the cartilaginous stage of tuberosity development in Osgood Schlatter disease

• Tuberosity marrow edema
• Subtle avulsive injuries to the secondary ossification center, often presenting as transverse clefts in the damaged ossifying cartilage, which may not be apparent on initial radiographs.
• Tendon thickening
• Prepatellar edema
• Deep infrapatellar bursitis

 

Reference: RadioGraphics 2018; 38:2069–2101

 

📌 Subchondral Fracture

✅ A subchondral fracture appears on MRI as:

• Linear areas of low T1 and T2 signal intensity, typically in regions of bone contusion
• These do not result in cortical disruption or deformity
• Seen as linear hypointensities beneath the cartilage without causing contour deformities or visible involvement of the articular surface.

 

References: AJR 2019; 213:963–982; RadioGraphics 2018; 38:1478–1495

 

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#Radiology, #OsgoodSchlatterDisease, #MRI, #SoftTissueAbnormalities, #TuberosityDevelopment, #SubchondralFracture, #BoneContusion, #MedicalImaging, #MusculoskeletalRadiology, #CartilageInjury