Variability of human femoral geometry and its implications on nail design

钉子(扣件) 几何学 地质学 工程类 数学 结构工程
作者
Joshua C. Arnone,Brett D. Crist,Carol V. Ward,A. Sherif El-Gizawy,Troy D. Pashuck,Gregory J. Della Rocca
出处
期刊:Injury-international Journal of The Care of The Injured [Elsevier BV]
卷期号:52 (1): 109-116 被引量:3
标识
DOI:10.1016/j.injury.2020.09.028
摘要

Abstract Objectives The objectives of this study are to present a new method of quantifying variability in human femoral geometry and to use this data to optimize intramedullary nail geometry for a better fit within the femoral canal. Methods Computed tomography (CT) scans of forty intact adult human femora were divided according to race, sex, and age, and were reconstructed digitally into three-dimensional solid models. Geometric features were then measured and compared among groups using ANOVA. An average geometric model was generated, from which an optimal intramedullary (IM) nail curvature function was derived. Insertion of the derived optimal nail and of two currently-available commercial nails into the femur having the highest degree of curvature was then simulated via finite element methods. Results Substantial variability in femoral curvature was observed among the population sample. Sex was found to correlate most strongly with femoral size; males tend to have larger femora than females. Although the average femoral radius of curvature for African Americans was slightly higher than for Caucasians, the difference was not statistically significant. Curvature did not vary across the sample by age, sex or race. Finite element analysis results simulating IM nail insertion using the geometrically-optimized nail showed a substantial decrease in von Mises stress when compared to tested commercially-available IM nails. Fracture was predicted within the posterior canal wall for commercially available nails, as the generated stresses exceeded the allowable stress of cortical bone, but not for the geometrically-optimized nail. Conclusions Considering variation in femoral geometry among patients when designing implantable fixation devices may be important. Femoral size differs between adults by sex, with males being larger than females. Pattern of curvature, however, did not differ, although there may be slight differences between European and African Americans. As such, the proposed average femoral curvature function calculated here may be sufficient for the entire population. According to finite element analysis, insertion-induced stresses in the femur were within the allowable range for the geometrically-optimized nail and appear more desirable than in other common nail designs.
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
2秒前
7秒前
风趣问雁完成签到 ,获得积分10
8秒前
8秒前
9秒前
111111zx111发布了新的文献求助10
12秒前
13秒前
温柔季节发布了新的文献求助10
14秒前
song完成签到 ,获得积分10
14秒前
qqq发布了新的文献求助10
14秒前
15秒前
15秒前
JamesPei应助王武聪采纳,获得10
16秒前
Rondab应助失眠的狗采纳,获得10
18秒前
19秒前
19秒前
wkjfh完成签到,获得积分0
20秒前
唐卟哩钵完成签到,获得积分10
20秒前
Rondab应助hg08采纳,获得10
21秒前
拓跋凝海完成签到,获得积分10
21秒前
21秒前
23秒前
24秒前
沉默的宛筠应助liu采纳,获得10
24秒前
Transition发布了新的文献求助10
25秒前
家家完成签到 ,获得积分10
25秒前
默默的如凡完成签到,获得积分10
25秒前
26秒前
ioio发布了新的文献求助10
26秒前
qqq完成签到,获得积分10
28秒前
29秒前
天天快乐应助Amon采纳,获得10
30秒前
32秒前
34秒前
包李发布了新的文献求助10
36秒前
111111zx111完成签到,获得积分10
37秒前
精美礼物给精美礼物的求助进行了留言
38秒前
NexusExplorer应助raolixiang采纳,获得10
40秒前
40秒前
哲别发布了新的文献求助10
43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? 3531914
关于积分的说明 11255516
捐赠科研通 3270597
什么是DOI,文献DOI怎么找? 1805008
邀请新用户注册赠送积分活动 882181
科研通“疑难数据库(出版商)”最低求助积分说明 809190