University of Oulu

Khakpour, S.; Tanska, P.; Esrafilian, A.; Mononen, M.E.; Saarakkala, S.; Korhonen, R.K.; Jämsä, T. Effect of Impact Velocity, Flooring Material, and Trochanteric Soft-Tissue Quality on Acetabular Fracture during a Sideways Fall: A Parametric Finite Element Approach. Appl. Sci. 2021, 11, 365.

Effect of impact velocity, flooring material, and trochanteric soft-tissue quality on acetabular fracture during a sideways fall : a parametric finite element approach

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Author: Khakpour, Shahab1; Tanska, Petri2; Esrafilian, Amir2;
Organizations: 1Research Unit of Medical Imaging, Physics, and Technology, University of Oulu, 90570 Oulu, Finland
2Department of Applied Physics, University of Eastern Finland, 70211 Kuopio, Finland
3Medical Research Center, University of Oulu and Oulu University Hospital, 90220 Oulu, Finland
4Diagnostic Radiology, Oulu University Hospital, 90220 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 11.4 MB)
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Language: English
Published: Multidisciplinary Digital Publishing Institute, 2021
Publish Date: 2021-04-26


A low-energy acetabular fracture, as a result of falling from standing height, is common among elderly patients and the number of cases is increasing rapidly in developed countries. Several biomechanical factors contribute to the incidence, severity, and type of acetabular fractures, such as body configuration at the impact moment or bone and soft-tissue quality. The current parametric study developed a comprehensive finite element model of the pelvic girdle and simple representation of the whole body and investigated the effects of impact velocity, conventional indoor/outdoor flooring material, and trochanteric soft-tissue stiffness on an acetabular fracture. Our results show that whereas the impact velocity has a substantial influence on the incidence and type of acetabular fracture, the effects of conventional flooring materials and trochanteric soft-tissue quality are not remarkable. It seems that other factors such as the quality of bone (healthy vs. osteoporotic), the thickness of trochanteric soft-tissue, and body configuration at the impact are more critical in the occurrence and type of the acetabular fracture. These results can be valuable in the prevention of acetabular fractures and the design of protective measures such as hip pads or novel flooring materials.

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Series: Applied sciences
ISSN: 2076-3417
ISSN-E: 2076-3417
ISSN-L: 2076-3417
Volume: 11
Issue: 1
Article number: 365
DOI: 10.3390/app11010365
Type of Publication: A1 Journal article – refereed
Field of Science: 3126 Surgery, anesthesiology, intensive care, radiology
Funding: This project was supported by the I4Future doctoral program under the Marie Skłodowska-Curie grant agreement No 713606, Academy of Finland (grant No 234529), and the Sigrid Juselius Foundation.
EU Grant Number: (713606) I4FUTURE - Novel Imaging and Characterisation Methods in Bio, Medical, and Environmental Research and Technology Innovations
Copyright information: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (