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Bone marrow edema and subchondral fracture in osteonecrosis of the femoral head: analysis with MRI and CT


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タイトル: Bone marrow edema and subchondral fracture in osteonecrosis of the femoral head: analysis with MRI and CT
著者: Abumis, Hesham M / Uetani, Masataka / Yamaguchi, Tetsuji
発行日: 2013年 4月
出版者: Nagasaki University School of Medicine / 長崎大学医学部
引用: Acta medica Nagasakiensia, 58(1), pp.13-18; 2013
抄録: Purpose: To study the relationship between bone marrow edema (BME) and subchondral fracture in osteonecrosis of the femoral head (ONFH), and to analyze MRI findings of subchondral fracture and correlate them with those of CT. Materials and Methods: Fifty seven hips in 38 patients with ONFH were studied retrospectively. Images were obtained with 1.5-T MRI unit and multidetector helical CT. Selected hips were divided into edema positive and edema negative groups. In each group presence or absence of subchondral fracture and/or collapse of femoral head was assessed, and the MR findings were compared with those of CT. Results: Thirty (52.6%) of 57 hips showed BME during the course of ONFH. In these edema positive group, 29 (96.7%) of 30 hips showed subchondral fracture and/or femoral head collapse, whereas only 7 (25.9%) of 27 hips in edema negative group showed subchondral fracture and/or FH collapse (P <0.0001). A low-signal intensity line on T1 and T2 weighted MR images and linear lucency on CT were the most common patterns of subchondral fracture. Conclusion: Our study showed significant relationship between BME and subchondral fracture/ femoral head collapse and supported the results of previous studies in considering BME as a marker for potential progression of osteonecrosis.
キーワード: Osteonecrosis of femoral head (ONFH) / Bone marrow edema (BME) / Magnetic resonance imaging (MRI) / Subchondral fracture
URI: http://hdl.handle.net/10069/32065
ISSN: 00016055
関連リンク : http://hdl.handle.net/10069/32733
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher
出現コレクション:Volume 58, No. 1

引用URI : http://hdl.handle.net/10069/32065

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