Wear Behavior and Histopathology of Classic Cemented Metal on Metal Hip Endoprostheses

Willert, H.‐G.; Buchhorn, Gottfried; Göbel, D; Köster, Georg; Schaffner, Silvio; Schenk, Robert K.; Semlitsch, M.

doi:10.1097/00003086-199608001-00016

Cited by 160 publications

(83 citation statements)

References 32 publications

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“…There was not sufficient molybdenum detected in the sera to determine a ratio for the hip-wear samples, but the ratio of cobalt to chromium was 2.9:1, which is consistent with the pin-on-disk results. An article published by Willert et al 41 discusses the mechanisms of wear of passivated metals and particularly cobalt alloys in clinical systems and advances theories about how the wear and repassivation processes might have an impact on metal content of tissues and fluids surrounding a device. The conclusion is that Streicher's results and, by extrapolation, the results of this study, match closely the composition of the alloy only because the process is not occurring in a living system, because cobalt would be excreted, and chromium would be sequestered in tissue.…”

Section: Discussionmentioning

confidence: 99%

Wear evaluation of cobalt–chromium alloy for use in a metal‐on‐metal hip prosthesis

John

Zardiackas

Poggie³

2003

J Biomed Mater Res

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Wear of the polyethylene in total joint prostheses has been a source of morbidity and early device failure, which has been extensively reported in the last 20 years. Although research continues to attempt to reduce the wear of polyethylene joint-bearing surfaces by modifications in polymer processing, there is a renewed interest in the use of metal-on-metal bearing couples for hip prostheses. Wear testing of total hip replacement systems involving the couple of metal or ceramic heads on polymeric acetabular components has been performed and reported, but, until recently, there has been little data published for pin-on-disk or hip-simulator wear studies involving the combination of a metallic femoral head component with an acetabular cup composed of the same or a dissimilar metal. This study investigated the in vitro wear resistance of two cobalt/chromium/molybdenum alloys, which differed primarily in the carbon content, as potential alloys for use in a metal-on-metal hip-bearing couple. The results of pin-on-disk testing showed that the alloy with the higher (0.25%) carbon content was more wear resistant, and this alloy was therefore chosen for testing in a hip-simulator system, which modeled the loads and motions that might be exerted clinically. Comparison of the results of metal-on-polyethylene samples to metal-on-metal samples showed that the volumetric wear of the metal-on-polyethylene bearing couple after 5,000,000 cycles was 110 -180 times that for the metal-bearing couple. Polyethylene and metal particles retrieved from either the lubricant for pin-on-disk testing or hip simulator testing were characterized and compared with particles retrieved from periprosthetic tissues by other researchers, and found to be similar. Based upon the results of this study, metal-on-metal hip prostheses manufactured from the high carbon cobalt/chromium alloy that was investigated hold sufficient promise to justify human clinical trials.

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Section: Discussionmentioning

confidence: 99%

Wear evaluation of cobalt–chromium alloy for use in a metal‐on‐metal hip prosthesis

John

Zardiackas

Poggie³

2003

J Biomed Mater Res

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“…However, aseptic loosening still occurs (August et al 1986, Visuri 1987, Jantsch et al 1991, Jacobsson et al 1996, Schmalzried et al 1996. Metal-to-metal implants are highly durable against wear, and newer designs may give better long-term results than old ones (McKellop et al 1996, Willert et al 1996, Higuchi et al 1997. With cobalt-chromium alloys, the wear resistance is high but corrosion resistance is low.…”

Section: Metalmentioning

confidence: 99%

Aseptic loosening, not only a question of wear: A review of different theories

et al. 2006

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“…A renewed interest in Metal-on-Metal (MoM) prosthesis bearings has been considered and developed since the early 1990s [1][2][3]. This has been mainly due to the problems of polyethylene wear debris induced osteolysis from the widely used Polyethylene-on-Metal (PoM) total joint arthroplasty [4].…”

Section: Introductionmentioning

confidence: 99%

Tribo-corrosion properties of cobalt-based medical implant alloys in simulated biological environments

Neville

Dowson

2007

Wear

164

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Wear Behavior and Histopathology of Classic Cemented Metal on Metal Hip Endoprostheses

Cited by 160 publications

References 32 publications

Wear evaluation of cobalt–chromium alloy for use in a metal‐on‐metal hip prosthesis

Wear evaluation of cobalt–chromium alloy for use in a metal‐on‐metal hip prosthesis

Aseptic loosening, not only a question of wear: A review of different theories

Tribo-corrosion properties of cobalt-based medical implant alloys in simulated biological environments

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