A Case of Atlanto-Axial Rotatory Fixation Following Cochlear Reimplantation

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  • 人工内耳入れ替え手術後に生じた環軸椎回旋位固定例
  • リンショウ ジンコウ ナイジ イレカエ シュジュツゴ ニ ショウジタ カンジクシイカイセンイ コテイレイ

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Abstract

The patient was a 9-year-old girl who had undergone cochlear implant implantation when she was 3 years old for a common cavity anomaly. She received cochlear implant reimplantation because of mechanical failure. The old electrode was removed without difficulty and the new electrode was inserted carefully so as not to become tangled within the inner ear. To accomplish this, repeated plain radiographs were obtained during surgery. On the first post-operative day, she complained of neck pain and otalgia, and her neck was rotated to the right. No other neurological findings were observed and the pain decreased, but the torticollis persisted for 7 days. Computed tomography revealed that her neck complaint was due to atlanto-axial rotatory fixation. With neck traction, the torticollis diminished and good atlanto-axial alignment was obtained.

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