Effect of axial compression on stiffness and deformation of human lumbar spine in flexion-extension

运动学 压缩(物理) 刚度 结构工程 变形(气象学) 腰椎 曲率 生物力学 材料科学 弯曲 机械 解剖 工程类 数学 物理 医学 几何学 经典力学 复合材料
作者
Kalle Chastain,Bronisław Gepner,David Moreau,Benjamin Koerber,Jason Forman,Jason J. Hallman,Jason Kerrigan
出处
期刊:Traffic Injury Prevention [Taylor & Francis]
卷期号:24 (sup1): S55-S61 被引量:4
标识
DOI:10.1080/15389588.2023.2198627
摘要

The goal of this study was to evaluate the effect of axial compression, employed with a follower-load mechanism, on the response of the lumbar spine in flexion and extension bending. Additional goals include measurement of both the kinetic (stiffness) and kinematic (deformation distribution) responses, evaluating how the responses vary across specimens, and to develop response corridors that can be used to evaluate human body models (HBMs) and anthropomorphic test devices (ATDs).Seven mid-sized male adult lumbar spines (T12-S1) from postmortem human surrogates were tested in subinjurious flexion and extension bending with 0, 900, and 1800 N of superimposed axial compression. Tests were performed in load-control with a 6-DOF robotic test system that applied pure flexion and extension moments to the specimens, and axial compression was directed along the spine's curvature via a follower load mechanism powered by force-controlled linear actuators. Load-deformation response data were captured and used to characterize the kinetic response of the lumbar spine in flexion/extension, and how it varies with axial compression. Individual vertebral kinematics were captured using 3D motion capture and the data was used to illustrate the distribution of bending deformation across each intervertebral joint of the spine, as well has how that distribution changes with axial compression. These response data were used to develop elliptical path-length parameterized response corridors for surrogate biofidelity evaluation.The lumbar spine was found to be generally stiffer in extension than in flexion, but this difference decreased with increasing axial compression. The lumbar spine exhibited a nonlinear kinetic (moment vs. angle) response in flexion that became more linear and stiffer with the addition of axial compression. In flexion without axial load, the majority of the bending deformation occurred at the L5-S1 joint, whereas in extension, deformation was more evenly distributed across the different intervertebral levels, but the locus of deformation was located in the mid-proximal lumbar at L2-L3.The superposition of axial compression in the lumbar spine affects the kinetic and kinematic response of the lumbar spine in flexion and extension. The response data and approach detailed in this study permit better assessment of ATD and HBM biofidelity.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
正直莫英发布了新的文献求助10
1秒前
2秒前
3秒前
HLQF完成签到,获得积分10
4秒前
江边鸟完成签到 ,获得积分10
5秒前
hg08完成签到,获得积分10
6秒前
丘比特应助小药同学采纳,获得10
6秒前
烟花应助zz采纳,获得10
8秒前
9秒前
卡卡罗特发布了新的文献求助10
10秒前
正直莫英完成签到,获得积分10
11秒前
黄彤彤关注了科研通微信公众号
11秒前
丁仪发布了新的文献求助10
11秒前
852应助毛毛采纳,获得10
11秒前
xyjf15完成签到,获得积分10
11秒前
卡尔拉完成签到,获得积分10
11秒前
Jasper应助Xylah_Rebecca采纳,获得10
14秒前
14秒前
SYLH应助赵杰采纳,获得10
14秒前
孙燕应助白桦林泪采纳,获得30
15秒前
田様应助白桦林泪采纳,获得10
15秒前
义气冷菱发布了新的文献求助10
15秒前
慕青应助Eleanor采纳,获得10
15秒前
16秒前
kitty完成签到 ,获得积分10
17秒前
李健的粉丝团团长应助Gao采纳,获得10
17秒前
要减肥完成签到,获得积分20
19秒前
20秒前
嘞是举仔发布了新的文献求助10
21秒前
黄彤彤发布了新的文献求助30
26秒前
顾矜应助hanshu采纳,获得10
26秒前
28秒前
29秒前
w1完成签到,获得积分10
29秒前
田様应助沐晴采纳,获得10
30秒前
丘比特应助嘞是举仔采纳,获得10
30秒前
30秒前
温暖的沛凝完成签到 ,获得积分10
31秒前
automan完成签到,获得积分10
32秒前
Xian发布了新的文献求助10
33秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989797
求助须知:如何正确求助?哪些是违规求助? 3531910
关于积分的说明 11255394
捐赠科研通 3270563
什么是DOI,文献DOI怎么找? 1805008
邀请新用户注册赠送积分活动 882157
科研通“疑难数据库(出版商)”最低求助积分说明 809190