臨床整形外科59巻9号

2024年09月発行

臨床経験

スクリュー付きケージを用いた頚椎前方除圧固定後のケージ沈下の特徴

著者： 彌冨将¹ 辻崇¹ 海苔聡¹ 池田大樹¹ 加藤雅敬¹ 藤田貴也¹ 森岡秀夫¹

所属機関： ¹独立行政法人国立病院機構東京医療センター整形外科

ページ範囲：P.1147 - P.1153

背景：頚椎前方除圧固定術(ACDF)においてプレートの併用が不要なスクリュー付きケージが普及しているが，ケージ沈下(CS)の問題も指摘されている．対象と方法：スクリュー付きケージを用いたACDF28症例35椎間を対象とし，CSの有無を術後3カ月と6カ月で調査した．結果：2mm以上のCSは3カ月で40％，6カ月で67％の椎間に認められ，CSは固定椎間の下位椎体で有意に多く発生した．またCSを認めた18％で症状の再燃または増悪を認めた．まとめ：CSは比較的高頻度に発生し，固定椎間の下位椎体への沈下が多く，臨床成績への関連も示唆された．

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