Exercise loading history and femoral neck strength in a sideways fall: A three-dimensional finite element modeling study
Abe, S., Narra, N., Nikander, R., Hyttinen, J., Kouhia, R., & Sievänen, H. (2016). Exercise loading history and femoral neck strength in a sideways fall: A three-dimensional finite element modeling study. Bone, 92, 9-17. https://doi.org/10.1016/j.bone.2016.07.021
© 2016 Elsevier Inc. This is a final draft version of an article whose final and definitive form has been published by Elsevier. Published in this repository with the kind permission of the publisher.
Over 90% of hip fractures are caused by falls. Due to a fall-induced impact on the greater trochanter, the posterior part of the thin superolateral cortex of the femoral neck is known to experience the highest stress, making it a fracture-prone region. Cortical geometry of the proximal femur, in turn, reflects a mechanically appropriate form with respect to habitual exercise loading. In this finite element (FE) modeling study, we investigated whether specific exercise loading history is associated with femoral neck structural strength and estimated fall-induced stresses along the femoral neck. One hundred and eleven three-dimensional (3D) proximal femur FE models for a sideways falling situation were constructed from magnetic resonance (MR) images of 91 female athletes (aged 24.7 ± 6.1 years, > 8 years competitive career) and 20 non-competitive habitually active women (aged 23.7 ± 3.8 years) that served as a control group. The athletes were divided into five distinct groups based on the typical loading pattern of their sports: high-impact (H-I: triple-jumpers and high-jumpers), odd-impact (O-I: soccer and squash players), high-magnitude (H-M: power-lifters), repetitive-impact (R-I: endurance runners), and repetitive non-impact (R-NI: swimmers). The von Mises stresses obtained from the FE models were used to estimate mean fall-induced stresses in eight anatomical octants of the cortical bone cross-sections at the proximal, middle, and distal sites along the femoral neck axis. Significantly (p < 0.05) lower stresses compared to the control group were observed: the H-I group — in the superoposterior (10%) and posterior (19%) octants at the middle site, and in the superoposterior (13%) and posterior (22%) octants at the distal site; the O-I group — in the superior (16%), superoposterior (16%), and posterior (12%) octants at the middle site, and in the superoposterior (14%) octant at the distal site; the H-M group — in the superior (13%) and superoposterior (15%) octants at the middle site, and a trend (p = 0.07, 9%) in the superoposterior octant at the distal site; the R-I group — in the superior (14%), superoposterior (23%) and posterior (22%) octants at the middle site, and in the superoposterior (19%) and posterior (20%) octants at the distal site. The R-NI group did not differ significantly from the control group. These results suggest that exercise loading history comprising various impacts in particular is associated with a stronger femoral neck in a falling situation and may have potential to reduce hip fragility. ...
PublisherElsevier Inc.; International Bone and Mineral Society
Publication in research information system
MetadataShow full item record
- Liikuntatieteiden tiedekunta 
Showing items with similar title or keywords.
Impact loading history modulates hip fracture load and location : A finite element simulation study of the proximal femur in female athletes Abe, Shinya; Narra, Nathaniel; Nikander, Riku; Hyttinen, Jari; Kouhia, Reijo; Sievänen, Harri (Pergamon Press, 2018)Sideways falls impose high stress on the thin superolateral cortical bone of the femoral neck, the region regarded as a fracture-prone region of the hip. Exercise training is a natural mode of mechanical loading to make ...
Effect of fall direction on the lower hip fracture risk in athletes with different loading histories : A finite element modeling study in multiple sideways fall configurations Abe, Shinya; Kouhia, Reijo; Nikander, Riku; Narra, Nathaniel; Hyttinen, Jari; Sievänen, Harri (Elsevier Inc., 2022)Physical loading makes bones stronger through structural adaptation. Finding effective modes of exercise to improve proximal femur strength has the potential to decrease hip fracture risk. Previous proximal femur finite ...
Effects of a home-based physical rehabilitation program on tibial bone structure, density and strength after hip fracture : a secondary analysis of a randomized controlled trial Suominen, Tuuli; Edgren, Johanna; Salpakoski, Anu; Arkela, Marja; Kallinen, Mauri; Cervinka, Tomas; Rantalainen, Timo; Törmäkangas, Timo; Heinonen, Ari; Sipilä, Sarianna (Wiley-Blackwell Publishing, Inc., 2019)Weight-bearing physical activity may decrease or prevent bone deterioration after hip fracture. This study investigated theeffects of a home-based physical rehabilitation program on tibial bone traits in older hip fracture ...
Intregrating metallic wiring with three-dimensional polystyrene colloidal crystals using electron-beam lithography and three-dimensional laser lithography Tian, Yaolan; Isotalo, Tero; Konttinen, Mikko P.; Li, Jiawei; Heiskanen, Samuli; Geng, Zhuoran; Maasilta, Ilari (IOP Publishing, 2017)We demonstrate a method to fabricate narrow, down to a few micron wide metallic leads on top of a three-dimensional colloidal crystal self-assembled from polystyrene (PS) nanospheres of diameter 260 nm, using electron-beam ...
Tian, Yolan (University of Jyväskylä, 2016)This thesis focuses on studying phononic crystal structures. More specifically, it is aimed at fabrication and measurement of thermal properties of two-dimensional (2D) periodic microstructures and three-dimensional (3D) ...