The influence of cement mantle thickness and stem geometry on fatigue damage in two different cemented hip femoral prostheses

Ramos, António; Simões, J. A.

doi:10.1016/j.jbiomech.2009.06.037

Cited by 42 publications

(36 citation statements)

References 27 publications

(30 reference statements)

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“…Очевидно, что пе-речисленные факторы не относятся к неустра-нимым, и если учитывать их при планировании, то, вероятно, вполне можно избежать. Несмотря на то, что доля ревизий по поводу расшатывания цементных бедренных компонентов являлась низкой, а очевидных причин ревизии на рентге-нограммах выявить не удалось, мы считаем, что их раннее расшатывание могло быть связано с нарушением техники установки имплантатов, в частности, формирования неадекватной мантии или выбора несоответствующего размера нож-ки эндопротеза [26,30].…”

Section: -2 (72)unclassified

The Structure of Early Revisions After Hip Replacement

Тихилов

Шубняков

Kovalenko

et al. 2014

Traumatology and Orthopedics of Russia

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The authors retrospectively reviewed RNIITO Arthroplasty Registry data of revision total hip arthroplasties performed in RNIITO in 3 year period (2011-2013). Part of early revisions within 5 years after the index procedure in general revision structure was 33% . Two hundred seventy three (64%) procedures had infection reason, 79 (19%) - aseptic loosening, 35 (8%) - dislocation and 27 (6%) - periprosthetic fractures in reasons of revision, respectively. More than half of revisions were performed within the first year after the index procedure. Early primary revisions after index total hip arthroplasty were performed in 254 (59,8%)cases, and repeated revisions were performed in 171cases one or more times. Of early primary revisions 125(49,2%) patients had index total hip athroplasty in our hospital, and 129 (50,8%) patients had index total hip athroplasty in other hospitals of Russian Federation. Our THA early revision structure is differs significantly from published in literature, moreover there is difference between revision reasons after primary total hip arthroplasty of our hospital and other hospitals. Revision reasons structure doesn’t show rate of primary THA complications, but defines main problems that should be solved.

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Section: -2 (72)unclassified

The Structure of Early Revisions After Hip Replacement

Тихилов

Шубняков

Kovalenko

et al. 2014

Traumatology and Orthopedics of Russia

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“…2 A patient's age, sex, weight, diagnosis, activity level, surgery condition, and implant choice influence the longevity of the device. The primary cause of failure of cemented joint replacements is aseptic loosening of the components, 4,5 A wide variety of surface modification techniques have developed with the aim of solving the implant fixation problem. Many papers have been reported the nanoscience techniques, such as plasma sintering, plasma nitridation, for obtaining a rough surface on an orthopedic or orthodontic implant.…”

Section: Introductionmentioning

confidence: 99%

Peen treatment on a titanium implant: effect of roughness, osteoblast cell functions, and bonding with bone cement

Khandaker¹,

Riahinezhad²,

Sultana³

et al. 2016

IJN

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Implant failure due to poor integration of the implant with the surrounding biomaterial is a common problem in various orthopedic and orthodontic surgeries. Implant fixation mostly depends upon the implant surface topography. Micron to nanosize circular-shaped groove architecture with adequate surface roughness can enhance the mechanical interlock and osseointegration of an implant with the host tissue and solve its poor fixation problem. Such groove architecture can be created on a titanium (Ti) alloy implant by laser peening treatment. Laser peening produces deep, residual compressive stresses in the surfaces of metal parts, delivering increased fatigue life and damage tolerance. The scientific novelty of this study is the controlled deposition of circular-shaped rough spot groove using laser peening technique and understanding the effect of the treatment techniques for improving the implant surface properties. The hypothesis of this study was that implant surface grooves created by controlled laser peen treatment can improve the mechanical and biological responses of the implant with the adjoining biomaterial. The objective of this study was to measure how the controlled laser-peened groove architecture on Ti influences its osteoblast cell functions and bonding strength with bone cement. This study determined the surface roughness and morphology of the peen-treated Ti. In addition, this study compared the osteoblast cell functions (adhesion, proliferation, and differentiation) between control and peen-treated Ti samples. Finally, this study measured the fracture strength between each kind of Ti samples and bone cement under static loading. This study found that laser peen treatment on Ti significantly changed the surface architecture of the Ti, which led to enhanced osteoblast cell adhesion and differentiation on Ti implants and fracture strength of Ti–bone cement interfaces compared with values of untreated Ti samples. Therefore, the laser peen treatment method has the potential to improve the biomechanical functions of Ti implants.

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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.…”

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confidence: 99%