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British Journal of Radiology (1989) 62, 1050-1055
© 1989 British Institute of Radiology
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The British Journal of Radiology, Vol 62, Issue 744 1050-1055, Copyright © 1989 by British Institute of Radiology

ARTICLES

Demonstration of osteochondritis dissecans of the talus by coronal computed tomographic arthrography

AM Davies and VN Cassar-Pullicino
Department of Radiology, Royal Orthopaedic Hospital, Birmingham.

Ten cases of osteochondritis dissecans of the talus are reviewed. Coronal computed tomographic arthrography identified the precise location in each case and consistently revealed the extent of the lesion to be greater than that apparent on the plain radiographs. The talar cartilage over the lesion was shown to be thinned in four cases, deficient in two, and fissuring of the cartilage was demonstrated in four. Subarticular cysts were identified in all but two cases and contrast medium was shown to enter the cysts in two cases indicating a communication with the ankle joint. The aetiology and relevance of these findings to treatment are discussed.




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