Modeling and prediction of body segment inertial properties of sheep from tomographic imaging

IF 2.4 3区医学 Q3 BIOPHYSICS

Journal of biomechanics Pub Date : 2025-07-11 DOI:10.1016/j.jbiomech.2025.112848

Aaron Henry , Carson Benner , Bailee CoVan , Annabelle Helin , Dana Gaddy , Larry J. Suva , Andrew B. Robbins

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引用次数: 0

Abstract

Sheep are frequently used animal models of musculoskeletal diseases and orthopedic procedures due to their docility, size and body weight, and similar joint biomechanics to humans. Estimation of body segment inertial properties (BSIPs) is a crucial step in development of biomechanical models, but few resources exist for BSIPs in sheep. The goal of this study was to develop predictive models to estimate the mass, center of mass, and inertia tensor of the hindlimbs of sheep from easily obtainable morphometric data. In addition, this study presents a more comprehensive and repeatable method for defining each hindlimb body segment when directly calculating BSIPs from tomographic imaging. Briefly, CT scans from 16 sheep of varying age, weight, sex, and phenotype were used to calculate BSIPs for the pelvis, thigh, crus, metatarsus, and pastern segments. Those measurements were then used to develop predictive models to estimate the BSIPs for those segments. The predictive models developed showed similar prediction errors to models developed in human populations.

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羊体段惯性特性的层析成像建模与预测

绵羊经常被用作肌肉骨骼疾病和骨科手术的动物模型，因为它们的温顺、大小和体重，以及与人类相似的关节生物力学。体段惯性特性（BSIPs）的估计是建立生物力学模型的关键步骤，但目前关于羊体段惯性特性的研究资源很少。本研究的目的是建立预测模型，从容易获得的形态测量数据中估计羊后肢的质量、质心和惯性张量。此外，本研究提出了一种更全面和可重复的方法，用于在直接计算层析成像的BSIPs时定义每个后肢体段。简单地说，使用16只不同年龄、体重、性别和表型的羊的CT扫描来计算骨盆、大腿、小腿、跖骨和关节段的BSIPs。然后，这些测量结果被用于开发预测模型，以估计这些部分的bsip。所建立的预测模型显示出与在人类种群中建立的模型相似的预测误差。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of biomechanics 生物-工程：生物医学

CiteScore

5.10

自引率

4.20%

发文量

345

审稿时长

1 months

期刊介绍： The Journal of Biomechanics publishes reports of original and substantial findings using the principles of mechanics to explore biological problems. Analytical, as well as experimental papers may be submitted, and the journal accepts original articles, surveys and perspective articles (usually by Editorial invitation only), book reviews and letters to the Editor. The criteria for acceptance of manuscripts include excellence, novelty, significance, clarity, conciseness and interest to the readership. Papers published in the journal may cover a wide range of topics in biomechanics, including, but not limited to: -Fundamental Topics - Biomechanics of the musculoskeletal, cardiovascular, and respiratory systems, mechanics of hard and soft tissues, biofluid mechanics, mechanics of prostheses and implant-tissue interfaces, mechanics of cells. -Cardiovascular and Respiratory Biomechanics - Mechanics of blood-flow, air-flow, mechanics of the soft tissues, flow-tissue or flow-prosthesis interactions. -Cell Biomechanics - Biomechanic analyses of cells, membranes and sub-cellular structures; the relationship of the mechanical environment to cell and tissue response. -Dental Biomechanics - Design and analysis of dental tissues and prostheses, mechanics of chewing. -Functional Tissue Engineering - The role of biomechanical factors in engineered tissue replacements and regenerative medicine. -Injury Biomechanics - Mechanics of impact and trauma, dynamics of man-machine interaction. -Molecular Biomechanics - Mechanical analyses of biomolecules. -Orthopedic Biomechanics - Mechanics of fracture and fracture fixation, mechanics of implants and implant fixation, mechanics of bones and joints, wear of natural and artificial joints. -Rehabilitation Biomechanics - Analyses of gait, mechanics of prosthetics and orthotics. -Sports Biomechanics - Mechanical analyses of sports performance.