男性における非定型大腿骨骨折の死亡率
Colton Hoffer1, Wiliam Obremskey2, Binni Makker1
1Medical College of Georgia at Augusta University.
まとめ
ビスホスホネート(BP)で治療された男性の非定型大腿骨骨折(AFF)は、股関節または骨幹部骨折と比較して5年死亡率が低かった。ただし、サンプルサイズが小さいため、AFFの死亡率の違いに関する最終的な結論は限定的である可能性がある。
科学分野:
- 整形外科学; 薬理学; 老年医学
背景:
- 非定型大腿骨骨折(AFF)は、骨粗鬆症に対する長期ビスホスホネート(BP)療法のまれな合併症である。AFFの死亡率に関する以前の研究は、主に女性に焦点を当てており、男性の集団は限られていた。
研究 の 目的:
- ビスホスホネート治療後に非定型大腿骨骨折(AFF)、股関節骨折、または典型的な転子下/大腿骨骨幹部(ST/FS)骨折を経験した男性の死亡率を調査し、比較すること。
主な方法:
- ビスホスホネート処方箋を持つ退役軍人省コーポレートデータウェアハウスの男性のレトロスペクティブコホート研究。ASBMR 2014基準に基づくAFFのICDコードおよびX線レビューによる骨折分類。人口統計データ、臨床的特徴、およびBP曝露期間の分析。
主要な成果:
- 5年間で、AFF(n=23)の死亡率は30%、股関節骨折(n=4,591)は52%、ST/FS骨折(n=225)は48%であった。最初の12ヶ月間の死亡率は、AFFが4%であったのに対し、股関節骨折は25%、ST/FS骨折は15%であった。Cox比例モデルでは、AFFのサンプルサイズが小さいため、AFFと他の骨折タイプとの間で5年死亡率に統計的に有意な差は見られなかった。
結論:
- 観察された死亡率では、男性のAFF後のリスクが低い可能性が示唆されているが、AFF症例数が限られているため、最終的な結論は出せない。ビスホスホネート使用者において、AFFが他の骨折タイプよりも死亡率の利点がある可能性を確認するには、より大規模な男性コホートによるさらなる研究が必要である。
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