Influence of stem geometry on mechanics of cemented femoral hip components with a proximal bond

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
K A MannD C Ayers

Abstract

Nonlinear, three-dimensional, finite element models of cemented femoral hip components with a proximal stem-cement bond were developed with use of a Charnley stem geometry and a modified Charnley stem geometry that had a cylindrical cross section over the distal two-thirds of the stem (Distal-Round). Peak tensile stresses in the proximal cement mantle increased 63 and 74% for the Charnley and Distal-Round stems, respectively, when the proximal stem-cement interface was debonded. The shear stresses over the stem-cement interface with a proximal bond were 29% larger for the Distal-Round stem than for the Charnley stem. After the proximal stem-cement interface was debonded, the peak tensile stresses in the cement mantle were 15% larger for the Distal-Round stem than for the Charnley stem. The results illustrate that stresses within the proximal cement mantle could be substantially reduced for both Charnley and Distal-Round stems through use of a proximal stem-cement bond. However, the risk of debonding may be higher for the Distal-Round stem because of increased shear stresses, and once debonded the risk of further loosening due to failure of the cement mantle would also be higher for the Distal-Round stem.

References

Nov 1, 1992·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·H WeinansH J Grootenboer
Sep 1, 1983·Journal of Biomedical Materials Research·R D Crowninshield, J R Tolbert
Sep 1, 1995·The Journal of Bone and Joint Surgery. American Volume·C G MohlerR C Johnston
May 1, 1995·Journal of Biomechanics·G BergmannA Rohlmann

❮ Previous
Next ❯

Citations

Jun 28, 2003·Clinical Biomechanics·Ching-Lung TaiWen-Jer Chen
Jun 1, 2007·Journal of Biomechanical Engineering·Angela E KedgleyCynthia E Dunning
Sep 29, 2004·Computer Methods and Programs in Biomedicine·Jui-Pin HungJames Shih-Shyn Wu
Nov 3, 2004·Journal of Biomechanics·Charalampos BitsakosAndrew A Amis
Nov 20, 2010·Medical Engineering & Physics·Donok ChoiDeuksoo Hwang
Feb 15, 2013·Computer Methods in Biomechanics and Biomedical Engineering·J ShiM Taylor
Apr 22, 2004·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Do-Gyoon KimKenneth A Mann
Mar 24, 2016·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Vijay K MeenaRavindra K Sinha
Nov 14, 2000·Journal of Biomedical Materials Research·X Wang, C M Agrawal
Aug 16, 2003·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Ralf U KleemannGeorg N Duda
Mar 19, 2005·The Journal of Bone and Joint Surgery. British Volume·H ItoA Minami
Jan 26, 1999·Clinical Orthopaedics and Related Research·D K Collis, C G Mohler
Sep 27, 2000·The Journal of Bone and Joint Surgery. American Volume·V P CannestraJ O Galante
Jan 5, 2002·Clinical Orthopaedics and Related Research·G G ValdiviaR B Bourne
Sep 24, 2019·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Sait Kocak, Tezcan Sekercioglu
May 23, 2009·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Nicholas E BishopMichael M Morlock

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.