The effect of plasma-sprayed calcium phosphate ceramic coatings on the metal ion release from porous titanium and cobalt-chromium alloys

1988 ◽  
Vol 22 (12) ◽  
pp. 1137-1163 ◽  
Author(s):  
Paul Ducheyne ◽  
Kevin E. Healy
Keyword(s):  
Calcium Phosphate ◽  
Metal Ion ◽  
Ceramic Coatings ◽  
Porous Titanium ◽  
Cobalt Chromium ◽  
Ion Release ◽  
Calcium Phosphate Ceramic ◽  
Chromium Alloys ◽  
Metal Ion Release ◽  
Plasma Sprayed

Cobalt-chromium alloys in dentistry: An evaluation of metal ion release

2015 ◽  
Vol 114 (4) ◽  
pp. 602-608 ◽  
Author(s):  
Maria Claudia Lucchetti ◽  
Giovanni Fratto ◽  
Federica Valeriani ◽  
Elisabetta De Vittori ◽  
Saverio Giampaoli ◽  
...  
Keyword(s):  
Metal Ion ◽  
Cobalt Chromium ◽  
Ion Release ◽  
Chromium Alloys ◽  
Metal Ion Release

11 Understanding the Clinical Performance of Ceramic Coated Femoral Components in Knee Arthroplasty Surgery

2021 ◽  
Vol 108 (Supplement_6) ◽  
Author(s):  
H Khatkar ◽  
M Prokopenko
Keyword(s):  
Knee Arthroplasty ◽  
Metal Ion ◽  
Clinical Performance ◽  
Ceramic Coatings ◽  
Wear Properties ◽  
Ion Release ◽  
Metal Ion Release ◽  
Knee Arthroplasty Surgery ◽  
Arthroplasty Surgery

Abstract Aim In vitro knee simulation has demonstrated favourable wear properties and decreased metal ion release of ceramic coated metal femoral components in total knee arthroplasty surgery. Femoral implants coated with ceramic have been used in patients, however the subsequent clinical performance and time-to-revision of these implants is largely unknown. The scope of this study was to review the current available clinical literature, focusing on retrieval studies of Ceramic-Coated TKAs. Method Literature review of PubMed and MEDLINE. All studies included demonstrated clinical evaluation of implant performance, either in vivo or at revision. Results 9 studies were identified and included for analysis in this study. Retrieval analysis has illustrated microscopic defects in coatings of revised implants, with associated abrasion and 3rd body wear of the polyethylene component. Evidence suggests that coating femoral components with ceramic can prevent effective cement bonding, leading to aseptic loosening and thus earlier implant failure. Despite these problems, high volume centres have been able to demonstrate comparable results when compared with traditional bearing surface combinations. The mechanism behind metal ion hypersensitivity is currently poorly understood; however, the use of ceramic coated knee replacements is demonstrating a reduction in metal ion release. Conclusions Whilst conferring favourable clinical properties in certain instances, the lack of surgical, implant and patient data surrounding the use of this coated implants remains concerning. The literature base remains limited, and meaningful clinical conclusions cannot be drawn. Recommendations include performing robust clinical trials in order to delineate the clinical efficacy of ceramic coatings in knee arthroplasty.

In vitro effects of macrophages on orthopaedic implant alloys and local release of metallic alloy components

2020 ◽  
Vol 102-B (7_Supple_B) ◽  
pp. 116-121
Author(s):  
G. Heise ◽  
C. M. Black ◽  
R. Smith ◽  
B. R. Morrow ◽  
W. M. Mihalko
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Metal Ion ◽  
Oxide Surface ◽  
Stainless Steel Surface ◽  
Orthopaedic Implant ◽  
Cobalt Chromium ◽  
Ion Release ◽  
Metal Ion Release

Aims This study aimed to determine if macrophages can attach and directly affect the oxide layers of 316L stainless steel, titanium alloy (Ti6Al4V), and cobalt-chromium-molybdenum alloy (CoCrMo) by releasing components of these alloys. Methods Murine peritoneal macrophages were cultured and placed on stainless steel, CoCrMo, and Ti6Al4V discs into a 96-well plate. Cells were activated with interferon gamma and lipopolysaccharide. Macrophages on stainless steel discs produced significantly more nitric oxide (NO) compared to their control counterparts after eight to ten days and remained elevated for the duration of the experiment. Results On stainless steel, both nonactivated and activated cell groups were shown to have a significant increase in metal ion release for Cr, Fe, and Ni (p < 0.001, p = 0.002, and p = 0.020 respectively) compared with medium only and showed macrophage-sized corrosive pits on the stainless steel surface. On titanium alloy discs there was a significant increase in aluminum (p < 0.001) among all groups compared with medium only. Conclusion These results indicated that macrophages were able to attach to and affect the oxide surface of stainless steel and titanium alloy discs. Cite this article: Bone Joint J 2020;102-B(7 Supple B):116–121.

In vivo metal-ion release from porous titanium-fiber material

1984 ◽  
Vol 18 (3) ◽  
pp. 293-308 ◽  
Author(s):  
P. Ducheyne ◽  
G. Willems ◽  
M. Martens ◽  
J. Helsen
Keyword(s):  
Metal Ion ◽  
Fiber Material ◽  
Porous Titanium ◽  
Ion Release ◽  
Metal Ion Release ◽  
Porous Titanium Fiber Material
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