孤立性棘突骨折:見逃されやすい診断
Sagar Maheshwari1, Muhammad Munir2, Babalola Tayo3
1Radiology, Barking, Havering and Redbridge University Hospitals NHS Trust, London, GBR.
Cureus
|January 19, 2026
まとめ
頸椎の棘突骨折のような微細な骨折は、重度の不安定性を示す可能性があります。さらなる悪化を防ぐために、遅発性の神経学的欠損に対するMRIによる迅速な評価が重要です。
科学分野:
- 整形外科学
- 脳神経外科学
- 放射線医学
背景:
- 頸椎の棘突骨折は、しばしば安定した損傷と見なされます。
- しかし、外傷においては、脊椎の不安定性を示すことがあります。
研究 の 目的:
- 微細な棘突骨折が重度の基礎的損傷を示す可能性があることを強調すること。
- 神経学的欠損が進行する外傷性棘突骨折に対して、特にMRIによるさらなる評価の重要性を強調すること。
主な方法:
- 転倒後に神経学的悪化を呈した93歳女性の症例報告。
- 初期のコンピューター断層撮影(CT)では明らかな骨折は認められませんでした。
- 再検査CTおよび磁気共鳴画像法(MRI)により、C6棘突骨折、C5-C6骨折脱臼および靭帯損傷が明らかになりました。
主要な成果:
- 初期評価では神経学的に異常はなく、CTでも明らかな骨折は認められませんでした。
- 24時間以内に遅発性の進行性四肢麻痺が発症しました。
- 再検査画像で、微細なC6棘突骨折、関節突切関節亜脱臼、C5-C6前方すべり症、および重度の靭帯損傷が明らかになりました。
結論:
- 微細な棘突骨折であっても、重度の基礎的損傷および不安定性を示す可能性があります。
- 外傷性棘突骨折は、特に遅発性の神経学的欠損がある場合、MRIを含む徹底的な評価が必要です。
- 靭帯性不安定性の早期認識が、最適な患者転帰の鍵となります。
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