臨床整形外科49巻3号

2014年03月発行

論述

腰椎変性すべり症における椎弓および椎間関節の3次元形態評価

著者： 松尾庸平¹ 海渡貴司¹ 杉浦剛¹ 長本行隆² 柏井将文¹ 岩崎幹季¹ 菅本一臣¹ 吉川秀樹¹

所属機関： ¹大阪大学大学院医学系研究科器官制御外科学（整形外科） ²独立行政法人国立病院機構大阪医療センター整形外科

ページ範囲：P.261 - P.267

　背景：腰椎変性すべり症(DS)の危険因子として椎弓・下関節突起の水平化が報告されている．

　対象と方法：今回われわれは独自に開発した3次元形態計測ソフトを用い，椎弓・椎間関節の3次元形態をDS・腰部脊柱管狭窄症・健常者間で比較した．

　結果：DS群では3D facet sagittal angle(FSA)はその他の群より有意に大きく，3D facet axial angle(FAA)は有意に小さかった．3DFAA tropism，3D lamina inclination angle(LIA)は有意な差を認めなかった．

　まとめ：DSにおいては下関節突起の水平化・矢状化を認めるが，椎間関節角のtropismおよび椎弓の水平化は認めないことが示された．

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