Chrome nitride coating reduces wear of small, spherical CrCoMo metal-on-metal articulations in a joint simulator

2016 ◽  
Vol 42 (3) ◽  
pp. 310-315
Author(s):  
R. Thorkildsen ◽  
O. Reigstad ◽  
M. Røkkum
Keyword(s):  
Weight Loss ◽  
Chromium Nitride ◽  
Nitride Coating ◽  
Volumetric Wear ◽  
Carpometacarpal Joint ◽  
Joint Replacements ◽  
Ringer’S Solution ◽  
Metal On Metal

Metal-on-metal articulations have fallen out of favour in larger joint replacements, but are still used in smaller joints. Coating the articulation has been suggested as one way of reducing wear. We compared a standard 6 mm CrCoMo articulation designed for the carpometacarpal joint of the thumb with a chromium nitride-coated version after 512,000 cycles in a joint simulator. A total of 6 articulations in each group were tested with a unidirectional load of 5 kg in Ringer’s solution. We found a statistically significant reduction in weight loss, amount of metallic wear produced and volumetric wear for the chromium nitride-coated articulation. Our findings support the use of chromium nitride coating in order to minimize the amount of metallic wear produced.

scholarly journals Chromium and cobalt intoxication mimicking mitochondriopathy

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Tim W. Rattay ◽  
Torsten Kluba ◽  
Ludger Schöls
Keyword(s):  
Diabetes Mellitus ◽  
Weight Loss ◽  
Mitochondrial Dna ◽  
Wear Debris ◽  
Hip Prosthesis ◽  
Mitochondrial Cytopathy ◽  
Whole Exome ◽  
Metal On Metal ◽  
Metal Wear ◽  
History Of

AbstractA 53-year old male with a history of progressive visual impairment, hearing loss, peripheral neuropathy, poorly controlled diabetes mellitus, cardiomyopathy, and weight loss was referred to the rare disease center due to the suspicion of mitochondrial cytopathy. In line with mitochondrial dysfunction, lactate in CSF was increased. Genetic testing by whole-exome sequencing and mitochondrial DNA did not reveal a likely cause. The case remained unsolved until he developed pain in his right hip, where he had received total hip arthroplasty 12 years earlier. An orthopedic evaluation revealed substantial shrinkage of the head of the hip prosthesis. Due to metal-on-metal wear, debris chromium and cobalt levels in serum were massively increased and significantly improved with multisystemic impairment after exchanging the defective implant.

Effect of chromium nitride coating on the corrosion and wear resistance of stainless steel

2000 ◽  
Vol 156 (1-4) ◽  
pp. 47-64 ◽  
Author(s):  
Jacek Jagielski ◽  
A.S. Khanna ◽  
Jacek Kucinski ◽  
D.S. Mishra ◽  
P. Racolta ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Corrosion And Wear ◽  
Chromium Nitride ◽  
Nitride Coating

scholarly journals A meta-analysis of design- and manufacturing-related parameters influencing the wear behavior of metal-on-metal hip joint replacements

2009 ◽  
Vol 27 (11) ◽  
pp. 1473-1480 ◽  
Author(s):  
Jan Philippe Kretzer ◽  
Jennifer A. Kleinhans ◽  
Eike Jakubowitz ◽  
Marc Thomsen ◽  
Christian Heisel
Keyword(s):  
Hip Joint ◽  
Wear Behavior ◽  
Meta Analysis ◽  
Joint Replacements ◽  
Metal On Metal ◽  
Design And Manufacturing ◽  
Hip Joint Replacements

AN UNUSUAL LYMPHOCYTIC PERIVASCULAR INFILTRATION IN TISSUES AROUND CONTEMPORARY METAL-ON-METAL JOINT REPLACEMENTS

2005 ◽  
Vol 87 (1) ◽  
pp. 18-27 ◽  
Author(s):  
A. P. DAVIES ◽  
H. G. WILLERT ◽  
P. A. CAMPBELL ◽  
I. D. LEARMONTH ◽  
C. P. CASE
Keyword(s):  
Joint Replacements ◽  
Metal On Metal ◽  
Metal Joint ◽  
Perivascular Infiltration

scholarly journals Brushite cement containing gelatin: evaluation of mechanical strength and in vitro degradation

Cerâmica ◽  
2019 ◽  
Vol 65 (374) ◽  
pp. 261-266 ◽  
Author(s):  
L. P. Silva ◽  
M. D. P. Ribeiro ◽  
E. S. Trichês ◽  
M. Motisuke
Keyword(s):  
Mechanical Properties ◽  
Weight Loss ◽  
Compressive Strength ◽  
Solid Phase ◽  
Setting Time ◽  
Biological Properties ◽  
Solubility In Water ◽  
Ringer’S Solution ◽  
Weight Loss Data

Abstract Calcium phosphate cements (CPCs) are potential materials for repairing bone defects, mainly due to their excellent biocompatibility and osteoconductivity. Nevertheless, their low mechanical properties limit their usage in clinical applications. The gelatin addition may improve the mechanical and biological properties of CPCs, but their solubility in water may increase the porosity of the cement during degradation. Thus, the aim of this work was to investigate the influence of gelatin on the setting time, compressive strength and degradation rate of a brushite cement. CPCs were prepared with the addition of 0, 5, 10 and 20 wt% of gelatin powder in the solid phase of the cement. The results indicated that the setting time increased with gelatin. Furthermore, cement with 20 wt% of gelatin had an initial compressive strength of 14.1±1.8 MPa while cement without gelatin had 4.5±1.2 MPa. The weight loss, morphology and compressive strength were evaluated after degradation in Ringer’s solution. According to the weight loss data, gelatin was eliminated of samples during degradation. It was concluded that the presence of gelatin improved CPCs mechanical properties; however, as degradation in Ringer’s solution evolved, cement compressive strength decreased due to gelatin dissolution and, consequently, an increase in sample porosity.

METALLOSIS OF A SILASTIC METACARPOPHALANGEAL JOINT ARTHROPLASTY — A CASE REPORT

Hand Surgery ◽  
2013 ◽  
Vol 18 (03) ◽  
pp. 429-430
Author(s):  
H. D. Measuria ◽  
T. J. McBride ◽  
S. C. Talwalkar
Keyword(s):  
Rheumatoid Arthritis ◽  
Case Report ◽  
Knee Arthroplasty ◽  
Metacarpophalangeal Joint ◽  
Joint Arthroplasty ◽  
Joint Replacements ◽  
Metal On Metal ◽  
Hip And Knee Arthroplasty ◽  
Full Flexion

Metallosis is a well-documented phenomenon in hip and knee arthroplasty from metal on metal bearing joint replacements. However, few cases of metallosis of metacarpophalangeal joint replacements have been reported. We present the case of a 49-year-old lady with rheumatoid arthritis who had previously undergone MCP joint replacements over 20 years ago. The decision was taken to revise her middle MCP joint after she developed pain and ulnar drift. At revision, the joint exhibited severe metallosis presumably arising from the grommet component of the replacement. This required considerable debridement and removal of the components and revision to a new upsized implant without grommets. It is of note that there were no external signs of metallosis with full flexion of the finger and a good roll up.

Alternative Bearing Couples in Total Hip Replacements: Solutions for Young Patients

2003 ◽  
Vol 13 (2_suppl) ◽  
pp. 31-35 ◽  
Author(s):  
J. Fisher ◽  
E. Ingham ◽  
M.H. Stone
Keyword(s):  
Polyethylene Wear ◽  
Young Patients ◽  
Volumetric Wear ◽  
Wear Rates ◽  
Total Hip Replacements ◽  
Metal On Metal ◽  
Hip Replacements ◽  
Gamma Irradiated ◽  
Ceramic On Ceramic

There is now considerable clinical concern about the effect of polyethylene wear debris induced osteolysis in long term failure of hip replacements. This paper compares the wear of stabilised and crosslinked polyethylene to alternative hard on hard bearings. The volumetric wear rates of stabilised and moderately crosslinked polyethylene 50 to 35 mm3/million cycles were less than previously reported for historical gamma irradiated in air polyethylene, but still of a level that in the long term could cause osteolysis. The moderately crosslinked polyethylene produced less wear than non-crosslinked polyethylene, but particles were smaller and more reactive resulting in little change in the osteolytic potential. Alumina ceramic on ceramic produced substantially less wear and osteolytic potential. Metal on metal also produced less wear than polyethylene but the particles adversely influence cell viability.

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