臨床整形外科51巻6号

2016年06月発行

手術手技

フリーハンド胸椎椎弓根スクリュー挿入時の新たな指標の検討—頭尾側の刺入方向に関して

著者： 森本安彦¹ 重松英樹¹ 岩田栄一朗¹ 奥田哲教¹ 増田佳亮¹ 田中康仁¹

所属機関： ¹奈良県立医科大学整形外科

ページ範囲：P.499 - P.502

背景：胸椎椎弓根スクリューの刺入点に関してさまざまな報告があるが，頭尾側の刺入方向の指標を検討した報告はほとんどない．本研究の目的は頭尾側の刺入方向の新たな指標を明らかにすることである．

対象と方法：胸椎CTを用い，T1からT12までの椎間関節の頂部2点と椎体上縁のなす角を測定した．

結果：平均値は全椎体87.6°，上位87.0°，中位87.0°，下位88.6°であった．

まとめ：いずれの椎体も計測角約90°を示した．この頭尾側方向の刺入方向は，椎弓上に筋鉤を設置することにより再現可能であり，術中の新たな指標となりうる．

参考文献

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