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KMID : 0896720020060020195
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Journal of the Korean Society of Foot Surgery
2002 Volume.6 No. 2 p.195 ~ p.200
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MRI and Arthroscopy of Osteochondral Lesion of the Talus which was not visible on Plasin Radiography
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Lee Woo-Chun
Choi Deog-Shin
Shim Jae-Chan
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Abstract
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Purpose:To investigate the MRI and arthroscopic findings of osteochondral lesion of the talus which looked normal on plane radiography.
Material and Methods :We investigated the MRI and arthroscopic findings of seven osteochondreal lesion in which there were no abnormal findings on plane radiography and no cystic changes on MRI. Average age was 31 years(range, 19-43 years). Arthroscopic findings were classified according to the Ferkel’s criteria.
Results:History of injury was reported in all cases and the average duration from injury to presentation was 4 years and 4 months. Low signal change in T1WI was found in 6 of 7 lesions, no signal change in 1 case. Low signal change in T2WI was found in 4, no signal change in 3. 6 STIR images were obtained. High signal change was found in 3, no signal change in 2 and intermediate signal change was in 1. Arthroscopic grading was A in 1, C in 1, D in 2, E in 1 and F in 2. We could not find any correlation between the findings on MRI and arthroscopic examination.
Conclusions: We suggest arthroscopic examination is needed for accurate diagnosis of the osteochondral lesions of the talus which looked normal on plane radiography, because they have various MRI findings and high likelihood of existence of unstable cartilage lesions.
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KEYWORD
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Talus, Osteochondral lesion, MRI, Arthroscopic findings
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