Finite Element Analysis of Cannulated Screws as Prophylactic Intervention of Hip Fractures

Introduction The frequency of hip fractures, a major cause of morbidity and mortality for geriatric patients, is expected to increase exponentially in the next few decades. The aim of this study is to assess the ability of stainless-steel cannulated screws to reduce the risk of a femoral neck fractu...

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Autores principales:	Brian Rhee, Steven M. Tommasini PhD, Kenneth Milligan MD, Julia Moulton, Michael Leslie DO, FAOA, Daniel H. Wiznia MD
Formato:	article
Lenguaje:	EN
Publicado:	SAGE Publishing 2021
Materias:	Orthopedic surgery RD701-811 Geriatrics RC952-954.6
Acceso en línea:	https://doaj.org/article/3061af3b2aed4916b0359ac2a243ecf2
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spelling	oai:doaj.org-article:3061af3b2aed4916b0359ac2a243ecf22021-12-01T02:03:25ZFinite Element Analysis of Cannulated Screws as Prophylactic Intervention of Hip Fractures2151-459310.1177/21514593211055890https://doaj.org/article/3061af3b2aed4916b0359ac2a243ecf22021-11-01T00:00:00Zhttps://doi.org/10.1177/21514593211055890https://doaj.org/toc/2151-4593Introduction The frequency of hip fractures, a major cause of morbidity and mortality for geriatric patients, is expected to increase exponentially in the next few decades. The aim of this study is to assess the ability of stainless-steel cannulated screws to reduce the risk of a femoral neck fracture, if placed prophylactically prior to a fall. Materials and Methods We created finite element models from computed tomography (CT) scan-based 3D models of a geriatric patient through 3D-image processing and model generation software. We used linear finite element simulations to analyze the effect of cannulated screws in the proximal femur in single-leg stance and lateral fall, which were processed for peak von Mises stresses and element failure. Findings Prophylactically placed cannulated screws significantly reduced failure in an osteoporotic proximal femur undergoing lateral fall. Three implanted screws in an inverted triangle formation decreased proximal femoral trabecular failure by 21% and cortical failure by 5%. This reduction in failure was achieved with a 55% decrease in femoral neck failure and 14% in lateral cortex failure. Conclusion Our results indicate that cannulated hip screws in an inverted triangle formation may strengthen an osteoporotic proximal femur in the event of a lateral fall. Mechanical testing on cadaveric or composite models is required to validate these results.Brian RheeSteven M. Tommasini PhDKenneth Milligan MDJulia MoultonMichael Leslie DO, FAOADaniel H. Wiznia MDSAGE PublishingarticleOrthopedic surgeryRD701-811GeriatricsRC952-954.6ENGeriatric Orthopaedic Surgery & Rehabilitation, Vol 12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Orthopedic surgery RD701-811 Geriatrics RC952-954.6
spellingShingle	Orthopedic surgery RD701-811 Geriatrics RC952-954.6 Brian Rhee Steven M. Tommasini PhD Kenneth Milligan MD Julia Moulton Michael Leslie DO, FAOA Daniel H. Wiznia MD Finite Element Analysis of Cannulated Screws as Prophylactic Intervention of Hip Fractures
description	Introduction The frequency of hip fractures, a major cause of morbidity and mortality for geriatric patients, is expected to increase exponentially in the next few decades. The aim of this study is to assess the ability of stainless-steel cannulated screws to reduce the risk of a femoral neck fracture, if placed prophylactically prior to a fall. Materials and Methods We created finite element models from computed tomography (CT) scan-based 3D models of a geriatric patient through 3D-image processing and model generation software. We used linear finite element simulations to analyze the effect of cannulated screws in the proximal femur in single-leg stance and lateral fall, which were processed for peak von Mises stresses and element failure. Findings Prophylactically placed cannulated screws significantly reduced failure in an osteoporotic proximal femur undergoing lateral fall. Three implanted screws in an inverted triangle formation decreased proximal femoral trabecular failure by 21% and cortical failure by 5%. This reduction in failure was achieved with a 55% decrease in femoral neck failure and 14% in lateral cortex failure. Conclusion Our results indicate that cannulated hip screws in an inverted triangle formation may strengthen an osteoporotic proximal femur in the event of a lateral fall. Mechanical testing on cadaveric or composite models is required to validate these results.
format	article
author	Brian Rhee Steven M. Tommasini PhD Kenneth Milligan MD Julia Moulton Michael Leslie DO, FAOA Daniel H. Wiznia MD
author_facet	Brian Rhee Steven M. Tommasini PhD Kenneth Milligan MD Julia Moulton Michael Leslie DO, FAOA Daniel H. Wiznia MD
author_sort	Brian Rhee
title	Finite Element Analysis of Cannulated Screws as Prophylactic Intervention of Hip Fractures
title_short	Finite Element Analysis of Cannulated Screws as Prophylactic Intervention of Hip Fractures
title_full	Finite Element Analysis of Cannulated Screws as Prophylactic Intervention of Hip Fractures
title_fullStr	Finite Element Analysis of Cannulated Screws as Prophylactic Intervention of Hip Fractures
title_full_unstemmed	Finite Element Analysis of Cannulated Screws as Prophylactic Intervention of Hip Fractures
title_sort	finite element analysis of cannulated screws as prophylactic intervention of hip fractures
publisher	SAGE Publishing
publishDate	2021
url	https://doaj.org/article/3061af3b2aed4916b0359ac2a243ecf2
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Finite Element Analysis of Cannulated Screws as Prophylactic Intervention of Hip Fractures

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