臨床整形外科54巻9号

2019年09月発行

誌上シンポジウム 肩腱板断裂 画像診断の進歩 MRIによる腱板の筋萎縮・脂肪変性評価

MRIによる筋萎縮および筋内脂肪浸潤の定量的評価

著者： 松村昇¹ 小黒草太² 奥田茂男³ 陣崎雅弘³ 中村雅也¹ 松本守雄¹

所属機関： ¹慶應義塾大学医学部整形外科学教室 ²東京医療センター放射線科 ³慶應義塾大学医学部放射線科学教室

ページ範囲：P.897 - P.903

　肩腱板断裂の治療において，腱板構成筋の変性が成績不良因子として知られている．一方，元来の定性的評価は再現性が低いと報告されており，また1スライスでの評価は筋退縮により過大評価する可能性が危惧される．そこでわれわれはMRIの3次元2-point Dixonシークエンスを用いて腱板構成筋全体を評価し，筋萎縮と筋内脂肪浸潤を定量的に解析した．高い検者内および検者間信頼性が得られ，解析結果は過去の知見と矛盾しなかった．筋全体の体積および脂肪含有率を正確に評価することにより，各腱板断裂患者の適切な治療方針を判断できるようになることが期待される．

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