膝関節内転モーメントを低減するための構造特性を持つ3Dプリント靴底
Ziang Jiang1, Paciane Bo Studer2, Matthias Zäh2
1Institute for Biomechanics, ETH Zürich, Zürich, Switzerland.
Frontiers in bioengineering and biotechnology
|February 5, 2026
まとめ
カスタム3Dプリント靴底は、従来のくさび形インソールよりも膝関節内転モーメント(KAM)を効果的に低減した。これらの新しい装具は、生体力学を改善することにより、膝関節症の管理に有望である。
科学分野:
- 生体力学
- 装具工学
- 膝関節症管理
背景:
- 外側くさび形インソール(LWI)は膝関節症で一般的だが、その効果は様々である。
- 従来のLWI設計の限界は、新しい装具ソリューションを必要とする。
- 3Dプリント靴底は、カスタマイズされた改善された生体力学的制御の可能性を提供する。
研究 の 目的:
- カスタム3Dプリント靴底が膝関節内転モーメント(KAM)を低減する効果を評価すること。
- 3Dプリント靴底と従来の5°LWIの生体力学的効果を比較すること。
主な方法:
- 調整可能な剛性(可変剛性-VS)とソフトヒール(SH)機能を備えた3Dプリント靴底を開発した。
- 対照、LWI、VS、SHフットウェアを着用した21名の健常成人における歩行パラメータ、運動学、運動学を評価した。
- データ分析には、反復測定ANOVAおよび重回帰分析を使用した。
主要な成果:
- SHソールは第1および第2ピークKAMをそれぞれ10.5%および8.6%低減した。VSソールは第2ピークKAMを9.1%低減した。
- VSおよびSHソールは両方とも膝関節内転角運動量(KAAI)を有意に低減した。
- 従来の5°LWIは、第1ピークKAMの低減がより小さかった(7.9%)。
結論:
- 3Dプリント靴底は、従来の5°LWIと比較して、KAM変数において優れた低減を示した。
- これらの新しい装具は、膝関節症管理における生体力学的に最適化されたフットウェアの可能性を秘めている。
- 膝関節症患者におけるこれらの所見を検証するために、さらなる臨床評価が推奨される。
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