Model-based assessment of muscle forces and strain distribution in the femur of Cabot’s Tragopans(Tragopan caboti)

作     者：Xinsen Wei Zihui Zhang Xinsen Wei;Zihui Zhang

作者机构：Institute of Geology and PaleontologyLinyi UniversityLinyi276000China College of Life SciencesCapital Normal UniversityBeijing100048China 

出 版 物：《Avian Research》 (鸟类学研究（英文版）)

年 卷 期：2023年第14卷第4期

页      面：706-715页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

基　　金：supported by the National Natural Science Foundation of China(No.31471951 No.31970411) 

主　　题：Cabot’s tragopan Femur Finite element analysis Inverse simulation Muscle force Strain 

摘      要：The hindlimbs play a crucial role in bird locomotion,making the biomechanical properties of the musculoskeletal system in these limbs a focal point for researchers studying avian ***,a comprehensive analysis of the mechanical performance within the long bones of hindlimbs during locomotion remains *** the present study,the strain and deformation of the femur of Cabot’s Tragopans(Tragopan caboti)were *** employed inverse simulation to calculate the force and moment of femoral muscles during mid-stance terrestrial locomotion and conducted finite element analysis to calculate femoral *** showed that during mid-stance,the femur experiences combined deformation primarily characterized by torsion,bending,and *** emphasises the importance of considering the influence of varying loads on bone adaptation when investigating bone form-function *** were found to play a significant role in offsetting joint loads on the femur,subsequently reducing the deformation and overall strain on the *** reduction enhances femoral safety during locomotion,allowing birds to meet mechanical demands while maintaining a lightweight bone ***,the *** caudalis significantly reduces torsional deformation of the proximal femur,protecting the vulnerable femoral neck from high fracture risk induced by rotation *** that the femur torsion during terrestrial locomotion in birds is associated with changes in hindlimb posture due to their adaptation to flight,the characteristics of *** caudalis may provide insight into the locomotor evolution of theropods and the origin of avian flight.