Effect of acetabular cup design on metal ion release in two designs of metal-on-metal hip resurfacing

2014 ◽  
Vol 102 (7) ◽  
pp. 1595-1601 ◽  
Author(s):  
Matteo Cadossi ◽  
Giuseppe Tedesco ◽  
Lucia Savarino ◽  
Nicola Baldini ◽  
Antonio Mazzotti ◽  
...  
Keyword(s):  
Metal Ion ◽  
Hip Resurfacing ◽  
Acetabular Cup ◽  
Ion Release ◽  
Metal On Metal ◽  
Metal Ion Release ◽  
Cup Design

scholarly journals Failure of an ACCIS metal-on-metal hip resurfacing prosthesis: A case report

2017 ◽  
Vol 231 (12) ◽  
pp. 1188-1194 ◽  
Author(s):  
Martin C Bone ◽  
Andrew Naylor
Keyword(s):  
Wear Rate ◽  
Metal Ion ◽  
Hip Prosthesis ◽  
Sudden Change ◽  
Hip Resurfacing ◽  
Niobium Nitride ◽  
Acetabular Cup ◽  
Ion Release ◽  
Metal Ion Release ◽  
Measuring Machine

The introduction of coatings on joint replacements was intended to reduce wear volumes, prevent corrosion and reduce metal ion release. However, retrieval analysis to confirm their in vivo performance has been limited. The aim of study was to examine the coating on a retrieved hip prosthesis to determine whether substantial damage or wear had occurred. A single advanced ceramic-coated implant systems titanium niobium nitride-coated hip resurfacing prosthesis was retrieved for examination. Wear volumes and surface roughness were measured to quantify the damage to the articulating surfaces. The coating had been completely removed from substantial parts of both the femoral head and the acetabular cup, corresponding to areas of wear as measured by a coordinate measuring machine. The total wear rate (61 mm3/year) was high and corresponded with the high metal ion levels recorded pre-operatively (83 ppb chromium and 110 ppb cobalt). Roughness data indicated that the coating has a lower roughness than the substrate and substantially lower than the boundary between the coating and the substrate. The wear rate is very high and it is likely that damage to the coating resulted in accelerated wear of the prosthesis. No sudden change between the boundary of the substrate and the coating was observed that would indicate delamination or failure of the coating substrate interface layer. While coatings may offer some theoretical benefits, they may also result in catastrophic failure of the prosthesis.

Reducing Metal Ion Release Following Hip Resurfacing Arthroplasty

2011 ◽  
Vol 42 (2) ◽  
pp. 169-180 ◽  
Author(s):  
David J. Langton ◽  
Thomas J. Joyce ◽  
Navjeet Mangat ◽  
James Lord ◽  
Maarten Van Orsouw ◽  
...  
Keyword(s):  
Metal Ion ◽  
Hip Resurfacing ◽  
Ion Release ◽  
Hip Resurfacing Arthroplasty ◽  
Resurfacing Arthroplasty ◽  
Metal Ion Release

scholarly journals Metal Ion Release, Clinical and Radiological Outcomes in Large Diameter Metal-on-Metal Total Hip Arthroplasty at Long-Term Follow-Up

Diagnostics ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 941
Author(s):  
Assunta Pozzuoli ◽  
Antonio Berizzi ◽  
Alberto Crimì ◽  
Elisa Belluzzi ◽  
Anna Chiara Frigo ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Metal Ion ◽  
Local Level ◽  
Harris Hip Score ◽  
Control Group ◽  
Ion Release ◽  
Total Hip ◽  
Metal On Metal ◽  
Metal Ion Release

Total hip arthroplasty (THA) with metal-on-metal (MoM) bearings have shown problems of biocompatibility linked to metal ion release at the local level causing an adverse reaction to metal debris (ARMD) and at a systemic level. The aim of this study was to evaluate clinical and radiological outcomes, and metal ion concentrations in the blood and urine of patients who underwent THA with the LIMA Met-Met hip system. Patients with ceramic-on-ceramic (CoC) bearings were included as a control group. In this study, 68 patients were enrolled: 34 with MoM THAs and 34 with CoC THAs. Patients were evaluated clinically (Harris Hip Score, SF-36) and radiologically at a median of 7.4 years after surgery. Whole blood and urinary cobalt and chromium levels were also assessed. Both types of implants were comparable in terms of clinical and functional results. Ion levels were significantly higher in the MoM group compared with CoC group 7 years after surgery. No correlations were found between metal ion levels and patient demographics, functional and radiological outcomes, and prosthesis features. Patient monitoring is thus advised to establish if prosthesis revision is necessary, especially in the case of MoM THA.

scholarly journals A novel ceramic coating for reduced metal ion release in metal-on-metal hip surgery

2016 ◽  
Vol 4 ◽  
Author(s):  
Coathup Melanie ◽  
Ferro De Godoy Roberta ◽  
Meswania Jay ◽  
Tyler Philippa ◽  
Hargunani Rikin ◽  
...  
Keyword(s):  
Metal Ion ◽  
Ceramic Coating ◽  
Hip Surgery ◽  
Ion Release ◽  
Metal On Metal ◽  
Metal Ion Release

Bearing surfaces

2011 ◽  
Author(s):  
Gordon Blunn
Keyword(s):  
Metal Ion ◽  
Polyethylene Wear ◽  
Ion Release ◽  
Wear Rates ◽  
Metal On Metal ◽  
Metal Ion Release ◽  
Hip Replacements ◽  
Alternative Material ◽  
Catastrophic Fracture ◽  
The 1960S

♦ Traditionally bearings were made from polyethylene and cobalt chrome. These bearings are still most commonly used for knee replacements. In hip replacements due to osteolysis caused by polyethylene wear alternative material combinations at the bearing surface are used♦ Highly cross linked plastics have been developed and have been shown to reduce wear. There are a number of different types available which differ in their performance♦ Metal on metal bearings first used in the 1960s have also been developed and show very low wear rates. These bearings are more susceptible to edge loading and the resulting metal ion release can result in adverse biological reactions leading to failure♦ Whilst ceramic on plastic surfaces have been used for a considerable amount of time the reduction in wear is not as great as with well functioning metal on metal bearings♦ Ceramic on ceramic bearings have been used for a considerable time and show even lower wear rates than metal on metal bearings. In the past there has been an incidence of catastrophic fracture of these bearings but developments in materials technology have considerably reduced these events.

Metal ion release from bearing wear and corrosion with 28 mm and large-diameter metal-on-metal bearing articulations

2010 ◽  
Vol 92-B (1) ◽  
pp. 12-19 ◽  
Author(s):  
P.-A. Vendittoli ◽  
A. Roy ◽  
S. Mottard ◽  
J. Girard ◽  
D. Lusignan ◽  
...  
Keyword(s):  
Metal Ion ◽  
Large Diameter ◽  
Ion Release ◽  
Wear And Corrosion ◽  
Metal On Metal ◽  
Metal Ion Release

Predictivity and Fate of Metal Ion Release From Metal-On-Metal Total Hip Prostheses

2014 ◽  
Vol 29 (9) ◽  
pp. 1763-1767 ◽  
Author(s):  
Annamaria Nicolli ◽  
Gianluca Bisinella ◽  
Giovanni Padovani ◽  
Antonio Vitella ◽  
Federica Chiara ◽  
...  
Keyword(s):  
Metal Ion ◽  
Ion Release ◽  
Hip Prostheses ◽  
Total Hip ◽  
Metal On Metal ◽  
Metal Ion Release ◽  
Total Hip Prostheses
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