Cement microcracks in thin-mantle regions after in vitro fatigue loading

Mann, Kenneth A.; Gupta, Sameer; Race, Amos; Miller, Mark A.; Cleary, Richard; Ayers, David C.

doi:10.1016/j.arth.2003.12.080

Cited by 48 publications

(34 citation statements)

References 16 publications

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“…A number of studies have suggested that pre-load damage exists in the cement mantle as a result of the shrinkage during cement polymerisation, and that this may influence the overall fatigue behaviour (Britton et al, 2003;Mann et al, 2004;Orr et al, 2003). It is therefore probable that damage was present in the experimental specimens prior to loading.…”

Section: Article In Pressmentioning

confidence: 97%

Cement mantle fatigue failure in total hip replacement: Experimental and computational testing

Jeffers

Browne

Lennon

et al. 2007

Journal of Biomechanics

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One possible loosening mechanism of the femoral component in total hip replacement is fatigue cracking of the cement mantle. A computational method capable of simulating this process may therefore be a useful tool in the preclinical evaluation of prospective implants. In this study, we investigated the ability of a computational method to predict fatigue cracking in experimental models of the implanted femur construct. Experimental specimens were fabricated such that cement mantle visualisation was possible throughout the test. Two different implant surface finishes were considered: grit blasted and polished. Loading was applied to represent level gait for two million cycles. Computational (finite element) models were generated to the same geometry as the experimental specimens, with residual stress and porosity simulated in the cement mantle. Cement fatigue and creep were modelled over a simulated two million cycles. For the polished stem surface finish, the predicted fracture locations in the finite element models closely matched those on the experimental specimens, and the recorded stem displacements were also comparable. For the grit blasted stem surface finish, no cement mantle fractures were predicted by the computational method, which was again in agreement with the experimental results. It was concluded that the computational method was capable of predicting cement mantle fracture and subsequent stem displacement for the structure considered.

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Section: Article In Pressmentioning

confidence: 97%

Cement mantle fatigue failure in total hip replacement: Experimental and computational testing

Jeffers

Browne

Lennon

et al. 2007

Journal of Biomechanics

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“…1(b)); this zone coincides with the maximum stress concentration of the stem according with other works (Lee and Hubert, 2001) that studied failure cases in different prosthesis designs. Some researchers (Ramos and Simões, 2009;Mann et al, 2004) have found a close relation between the laser marks and the origin of the crack due to localized microstructure transformation as a result of the heat supplied during the laser marking process. For this case it was not possible since the laser marks were located 3 cm above the fracture.…”

mentioning

confidence: 98%

Failure analysis of a total hip prosthesis implanted in active patient

Hernández-Rodríguez

Ortega

Contreras-Hernandez

2010

Journal of the Mechanical Behavior of Biomedical Materials

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“…[1][2][3][4][5][6][7][8][9] In the early 1970s, another concept was introduced, and is still upheld in France, which indicates that implantation of a canalfilling femoral component in a line-to-line manner is associated with a thin cement mantle. 10 This principle which has given excellent long-term clinical and radiological results has been named the 'French paradox'.…”

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confidence: 99%

Is the so-called ‘French paradox’ a reality?

Masri¹,

Kerboull²,

Kerboull³

et al. 2010

The Journal of Bone and Joint Surgery. British volume

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We have evaluated the in vivo migration patterns of 164 primary consecutive Charnley-Kerboull total hip replacements which were undertaken in 155 patients. The femoral preparation included removal of diaphyseal cancellous bone to obtain primary rotational stability of the stem before line-to-line cementing. We used the Ein Bild Roentgen Analyse femoral component method to assess the subsidence of the femoral component. At a mean of 17.3 years (15.1 to 18.3) 73 patients were still alive and had not been revised, eight had been revised, 66 had died and eight had been lost to follow-up. The mean subsidence of the entire series was 0.63 mm (0.0 to 1.94). When using a 1.5 mm threshold, only four stems were considered to have subsided. Our study showed that, in most cases, a highly polished double-tapered stem cemented line-to-line does not subside at least up to 18 years after implantation.

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Cement microcracks in thin-mantle regions after in vitro fatigue loading

Cited by 48 publications

References 16 publications

Cement mantle fatigue failure in total hip replacement: Experimental and computational testing

Cement mantle fatigue failure in total hip replacement: Experimental and computational testing

Failure analysis of a total hip prosthesis implanted in active patient

Is the so-called ‘French paradox’ a reality?

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