The design features of cemented femoral hip implants

Scheerlinck, Thierry; Casteleyn, Pierre

doi:10.1302/0301-620x.88b11.17836

Cited by 127 publications

(107 citation statements)

References 134 publications

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“…The Spectron EF stem is made of CoCr, and it is a distally satin, proximally roughened, collared tapered stem relying on the composite-beam fixation model [26]. It has a Ra of 2.8 lm on the proximal one-third and a Ra of 0.7 lm on the distal two-thirds of the stem.…”

Section: Methodsmentioning

confidence: 99%

Head Material Influences Survival of a Cemented Total Hip Prosthesis in the Norwegian Arthroplasty Register

Kadar

Dybvik

Hallan

et al. 2012

Clinical Orthopaedics &Amp; Related Research

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Background High prosthesis survival is reported for total hip prostheses with metal and alumina heads, but direct comparisons of a single prosthesis design with one of two different head materials has seldom been studied. Prostheses with zirconia heads are less commonly used than metal and alumina heads, and the few reports suggest variable results with zirconia heads.Questions/Purposes We therefore asked: (1) Would metal heads provide better survival of a cemented total hip arthroplasty (THA) than alumina heads? (2) Would metal heads provide better survival of a cemented THA than zirconia heads? Methods We searched in the Norwegian Arthroplasty Register for cemented primary THA cup/stem combinations that simultaneously had been used with different head materials. The only THA that fulfilled these inclusion criteria was the cemented Reflection All-Poly/ Spectron EF (cup/stem) that had during 2001 to 2006 been used both with alumina (n = 448) and cobaltchromium (n = 5229) heads; that implant had also been used with zirconia (n = 275) and cobalt-chromium heads (n = 3195) during 1997 to 2003, and we included patients with this THA from these two time intervals in the study. All cups were conventional polyethylene. We estimated prosthesis survival and relative revision risks adjusting for age, sex, and diagnosis. The followup in the two study materials was until December 2010.

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Section: Methodsmentioning

confidence: 99%

Head Material Influences Survival of a Cemented Total Hip Prosthesis in the Norwegian Arthroplasty Register

Kadar

Dybvik

Hallan

et al. 2012

Clinical Orthopaedics &Amp; Related Research

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“…However, no subsidence of cement or cement-bone radiolucency was observed on the radiographs, indicating a weak bonecement bond. On the other hand, the surface finish of a cemented femoral stem can have a substantial effect on its performance [7,12,14,19,22].…”

Section: Discussionmentioning

confidence: 99%

Coordinating Retrieval and Register Studies Improves Postmarket Surveillance

Ellison

Hallan

Høl

et al. 2012

Clinical Orthopaedics &Amp; Related Research

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“…Depending upon the design philosophy of the femoral stem, different surface finishes have been adopted [6].…”

Section: Introductionmentioning

confidence: 99%

“…This is supported by historical evidence of the 'matte' Exeter femoral stems (taper loaded geometry). These were considered unsuccessful due to high incidences of PMMA induced inflammatory reactions due to abrasion at the interface [6]. Whilst all femoral components display some form of wear and corrosion at revision, the different interfacial conditions produce very different surface morphologies as demonstrated by Howell et al [7].…”

Section: Introductionmentioning

confidence: 99%

The role of surface pre-treatment on the microstructure, corrosion and fretting corrosion of cemented femoral stems

Bryant

Farrar²,

Freeman³

et al. 2016

Biotribology

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The use of cemented femoral stems is common practice worldwide with strong clinical data supporting their use.Over the years, different surface processing techniques have been employed to enhance the performance of the stem-cement interface. As a result different clinical outcomes and visual presentation at revision has been observed. Whilst research has focussed on increasing adhesion and better load bearing capacity, the effects of surface processing on the degradation of cemented femoral stems has not been investigated. The aims of this study was to investigate the effects of surface processing on the subsurface microstructure, surface chemistry and tribocorrosion degradation mechanisms of cemented tapered femoral stems subjected to polishing and blasting (Vaquasheen) processes. Cemented femoral stems were orientated and loaded according to for 500,000 cycles in 0.9% NaCl at 37 ˚C. A three-electrode electrochemical cell was integrated into the mechanical test to facilitate in-situ corrosion measurements. The severity and mechanism of damaged were assessed scanning and transmission electron microscopy, X-ray photoelectron spectrometry, solution mass spectrometry and white light interferometry. Surface processing was seen to drastically influence the level of corrosion within the interface with polished surfaces demonstrating the highest levels of corrosion. Surface analysis consistently demonstrated the presence of a SiO2 layer on the vaquasheened stems thought to originate from the glass bead blast matrix. This resulted in lower levels of corrosion both under static and tribocorrosion assessment. In conclusion, blasted surfaces resulted in lower wear induced corrosion when compared to the polished surfaces. However the total metallic ion levels did not follow the same trend. This is thought to be due to the formation of metallic debris and dissolution of debris due to abrasion of the femoral stems. Over the years, different surface processing techniques have been employed to enhance the performance of the stem-cement interface. As a result different clinical outcomes and visual presentation at revision has been observed. Whilst research has focussed on increasing adhesion and better load bearing capacity, the effects of surface processing on the degradation of cemented femoral stems has not been investigated. The aims of this study was to investigate the effects of surface processing on the subsurface microstructure, surface chemistry and tribocorrosion degradation mechanisms of cemented tapered femoral stems subjected to polishing and blasting (Vaquasheen) processes. Cemented femoral stems were orientated and loaded according to for 500,000 cycles in 0.9% NaCl at 37 ˚C. A three-electrode electrochemical cell was integrated into the mechanical test to facilitate in-situ corrosion measurements. The severity and mechanism of damaged were assessed scanning and transmission electron microscopy, X-ray photoelectron spectrometry, solution mass spectrometry and white light interferometry. Surface processin...

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The design features of cemented femoral hip implants

Cited by 127 publications

References 134 publications

Head Material Influences Survival of a Cemented Total Hip Prosthesis in the Norwegian Arthroplasty Register

Head Material Influences Survival of a Cemented Total Hip Prosthesis in the Norwegian Arthroplasty Register

Coordinating Retrieval and Register Studies Improves Postmarket Surveillance

The role of surface pre-treatment on the microstructure, corrosion and fretting corrosion of cemented femoral stems

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