馬の頭頸部の生体力学

Hilary Mary Clayton¹

¹Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, MI 48823, USA; Sport Horse Science, LLC, 3145 Sandhill Road Mason, MI 48854, USA.

The Veterinary clinics of North America. Equine practice

|February 7, 2026

まとめ

馬

科学分野:

馬の生体力学; 解剖学; 運動解析

背景:

馬の頭頸部は、体重の約10%を占める。; それらの前方への位置は、頸部関節に大きなてこ作用を生み出す。

研究の目的:

運動中の馬の頸部と項靭帯の生体力学的役割を解明すること。

主な方法:

解剖学的てこ作用と関節力の分析。; 筋収縮サイクル（偏心・同心）の検討。; エネルギー保存における項靭帯の機能の調査。

主要な成果:

運動中の頸部の動きは、重力と慣性によって駆動される。; 上背部の筋肉は、制御のために偏心・同心収縮を利用する。; 項靭帯の後部索状部とC2への薄板は、懸垂点として機能し、エネルギーを節約する伸張・反発サイクルを促進する。

結論:

項靭帯は、効率的な馬の運動に不可欠である。; これらの力学を理解することは、スポーツ医学や鞍の設計などの分野に役立つ。

キーワード:

頸部の運動学頸部の動力学馬跛行補償項靭帯

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