Title
Measuring femoral neck loads in healthy young and older adults during stair ascent and descent
Campus Units
Kinesiology
Document Type
Article
Publication Version
Published Version
Publication Date
1-26-2021
Journal or Book Title
PLoS ONE
Volume
16
Issue
1
First Page
e0245658
DOI
10.1371/journal.pone.0245658
Abstract
Understanding the hip loading environment for daily activities is useful for hip fracture prevention, rehabilitation, and the design of osteogenic exercises. Seventeen older adults (50–70 yrs) and twenty young adults (18–30 yrs) were recruited. A rigid body model combined with a musculoskeletal model was used to estimate lower extremity loading. An elliptical cross-section model of the femoral neck was used to estimate femoral neck stress during stair ascent and descent. Two peaks were identified in the stress curves, corresponding to the peaks in the vertical ground reaction force. During stair ascent, significantly higher tension on the superior femoral neck was found for the young group at peak 1 (young: 13.5±6.1 MPa, older: 4.2±6.5 MPa, p<0.001). Also during stair ascent, significantly higher compression on the posterior femoral neck was found for the older group at peak 2 (young: -11.4±4.9 MPa, old: -18.1±8.6 MPa, p = 0.006). No significant difference was found for stair descent. Components of stress (muscle vs. reaction forces; axial forces vs. bending moments) were also examined for each trial of stair ascent and descent. The stresses and their components provided loading magnitude and locations of higher stress on the femoral neck during stair ascent and descent. Understanding femoral neck stresses may be used to help prevent hip fractures, reduce pain, improve rehabilitation, and design osteogenic exercises.
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Copyright Owner
The Author(s)
Copyright Date
2021
Language
en
File Format
application/pdf
Recommended Citation
Deng, Chen; Gillette, Jason C.; and Derrick, Timothy R., "Measuring femoral neck loads in healthy young and older adults during stair ascent and descent" (2021). Kinesiology Publications. 90.
https://lib.dr.iastate.edu/kin_pubs/90
Included in
Exercise Science Commons, Expeditionary Education Commons, Musculoskeletal, Neural, and Ocular Physiology Commons
Comments
This article is published as Deng C, Gillette JC, Derrick TR (2021) Measuring femoral neck loads in healthy young and older adults during stair ascent and descent. PLoS ONE 16(1): e0245658. https://doi.org/10.1371/journal.pone.0245658.