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    慢性関節リウマチによる環軸椎亜脱臼に対する後方固定術の経験

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    慢性関節リウマチにおける環軸椎亜脱臼はまれなものではなく,またその多くは保存的治療によって対処すべきものである.しかし頸髄損傷,椎骨動脈圧迫による突然死の可能性もあるため,神経学的症状がある場合には手術的治療の対象となる.その場合には,臨床症状を把握したうえで安全でかつ確実な手術方法を検討しなければならない.今回われわれは,慢性関節リウマチによる環軸椎亜脱臼に対してMcGraw-Rusch法による環軸椎後方固定術とHalo-jacketによる外固定を併用し,良好な経過をとった73歳女性の症例を経験したので,環軸椎亜脱臼の頻度,神経学的合併症と手術適応について検討を加え報告する.In rheumatoid arthritis atlanto-axial subluxation is not infrequent and can usually be managed by conservative treatment. Surgical treatment, however, is necessary when there is neural involvement that may threaten the integrity of the spinal cord, leading to severe symptoms or sudden death. It is therefore essential that the orthopaedic surgeon should not only recognize this conditions, but should know the indications for stabilization and practice a safe and reliable technique of arthrodesis. We reviewed a case of a seventy-three years old woman with progressive atlanto-axial subluxation in rheumatoid arthritis, she was treated with the use of the McGraw and Rusch technique in combination with Halo-jacket. The purpose of this paper is not examine the incidence of atlanto-axial subluxation in rheumatoid arthritis, to describe the neural involvements and to mention the indications for atlanto-axial arthrodesis
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