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Osteochondritis Dissecans of the Tibial Plafond

Imaging Characteristics and a Review of the Literature

Liem T. Bui-Mansfield1, Mitch Kline, Felix S. Chew, Lee F. Rogers and Leon Lenchik

1 All authors: Department of Radiology, Wake Forest University School of Medicine, Medical Center Blvd., Winston-Salem, NC 27157-1088.



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  		Fig. 1A. —33-year-old man with ankle pain and limp. Mortise view of radiograph of ankle shows lucent lesion (arrow) in central portion of tibial plafond.

 


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  		Fig. 1B. —33-year-old man with ankle pain and limp. Lateral radiograph of ankle shows subtle loss of cortical line posteriorly (arrow). Note os trigonum.

 


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  		Fig. 1C. —33-year-old man with ankle pain and limp. Axial CT scan of ankle obtained at level of ankle joint shows how, initially, osteochondritis dissecans (arrow) was thought to be in talus.

 


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  		Fig. 1D. —33-year-old man with ankle pain and limp. Sagittal reconstruction of CT scan shows cortical depression (arrow) in posterior half of distal tibia. Note os trigonum.

 


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  		Fig. 1E. —33-year-old man with ankle pain and limp. Coronal CT scan shows osteochondral lesion with loose body (arrow) in medial aspect of tibial plafond.

 


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  		Fig. 2A. —39-year-old man with ankle pain. Anteroposterior radiograph of ankle shows lucent lesion (arrow) in lateral aspect of distal tibia, with two calcified bodies located in lucency.

 


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  		Fig. 2B. —39-year-old man with ankle pain. Lateral radiograph of ankle shows subtle loss of cortical line anteriorly (arrow).

 


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  		Fig. 3A. —46-year-old man with ankle pain and swelling. Sagittal T1-weighted MR image shows abnormally low signal intensity in posterior aspect of tibial plafond (arrow).

 


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  		Fig. 3B. —46-year-old man with ankle pain and swelling. Sagittal short tau inversion-recovery MR image shows abnormally high signal intensity in posterior aspect of tibial plafond (arrow).

 


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  		Fig. 3C. —46-year-old man with ankle pain and swelling. Coronal T2-weighted MR image shows cortical depression (arrow) in posterolateral aspect of distal tibia and adjacent bone marrow edema.

 

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