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Osteonecrosis of the knee joint Junichiro Hiraoka 1 1Department of Radiology Tokushima University Hospital Keyword: 骨壊死 , 軟骨下骨折 , 膝関節 pp.765-771
Published Date 2023/8/10
DOI https://doi.org/10.18888/rp.0000002417
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Subchondral insufficiency fracture of the knee(SIFK)is one of the most common causes of knee pain in the elderly. In the 1990s, the pathogenesis of SONK began to be reconsidered, and in 2000, Yamamoto reported that histological studies showed that the essence of SONK is a subchondral fracture, with osteonecrosis as a secondary cause of osteonecrosis. In 2010, Madry discussed the possibility that increased intraosseous pressure and decreased local blood circulation associated with subchondral microfractures may contribute to osteonecrosis. Thus, SONK is a condition caused as a result of subchondral fractures and is now considered to be part of SIFK.

This article describes osteonecrosis of the knee joint, focusing on imaging findings of subchondral insufficiency fracture and avascular necrosis(AVN).


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電子版ISSN 印刷版ISSN 0009-9252 金原出版

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