2014
DOI: 10.4172/jcsb.1000140
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Total Hip Replacement: Tensile Stress in Bone Cement is influenced by Cement Mantle Thickness, Acetabular Size, Bone Quality, and Body Mass Index

Abstract: Background: High stress developed in the cement mantle of a total hip replacement is reported to contribute to premature failure of acetabular components. We postulate that stress level is influenced by cement mantle thickness, acetabular size, bone quality and body mass index. Methods:Finite element models of reconstructed hemi pelves of different sizes and acetabular diameters (46, 52 and 58 mm) were created from CT-Scan data. We investigated the effects of cement mantle thickness (1, 2, 3 and 4 mm), acetabu… Show more

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Cited by 6 publications
(10 citation statements)
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“…The tensile strength of the PMMA material is approximately 25 MPa [17,18,19]. The von Mises stress results in this study confirms the study of stress [7] and strain [1] characteristics.…”
Section: Resultssupporting
confidence: 85%
See 1 more Smart Citation
“…The tensile strength of the PMMA material is approximately 25 MPa [17,18,19]. The von Mises stress results in this study confirms the study of stress [7] and strain [1] characteristics.…”
Section: Resultssupporting
confidence: 85%
“…They concluded that the thickness of the cement mantle is a dominant factor for hip substitution. Numerical analysis was performed by Lamvohee et al [7] to explore variables related to the thickness of a cement mantle such as the size of acetabular, body mass index, and quality of the bone. By increasing the thickness of the cement mantle, the maximum tensile stress decreases.…”
Section: Introductionmentioning
confidence: 99%
“…15,22,40 From the mechanical perspective, high stresses in the cement mantle might be sufficient in promoting the crack growth and debonding of the cement mantle, which ultimately may lead to the failure of THRs. 2,31,4146 Similarly, the results of this study also stated that the UHMWPE as an implant material causes more stresses in the cement mantle of the cemented acetabular cup.…”
Section: Discussionsupporting
confidence: 72%
“…Earlier published studies show that obesity is associated with a premature hip replacement and encourages the failure of the cemented prosthesis. 25 Obesity was found to be an independent risk factor for acute periprosthetic infection after primary hip replacement. 4 An increase in bodyweight results in an increase in bone stress and that will further increase with different activities such as ascending stairs, descending stairs, running and stumbling.…”
Section: Introductionmentioning
confidence: 97%
“…Two forces are acting on the implant on vertical and horizontal directions with different values presented in table 1 [2], [3], [7], [8], [9], [16]. Figure 1 presents the studied structure that consists in the cortical bone, trabecular bone, implant and abutment.…”
Section: Introductionmentioning
confidence: 99%