In a 2011 article by NP Hailer et al. titled “Elevation of circulating HLA DR(+) CD8(+) T-cells and correlation with chromium and cobalt concentrations 6 years after metal-on-metal hip arthroplasty.” published in the medical journal Acta Orthopaedica, researchers state “Following metal-on-metal hip arthroplasty (THA), immunological reactions including changes in lymphocyte populations, aseptic…

In a 2011 report by AJ Hart et al. published in Clinical Orthopaedics and Related Research, researchers write “Many factors affect the blood metal ion levels after metal-on-metal (MOM) hip arthroplasty” and “The main surgically adjustable variable is the amount of coverage of the head provided by the cup which is a function of…

In 2008, a paper by A.J. Hart et al. was published in the medical journal Hip International that explains “A cup inclination angle greater than 45 degrees is associated with increased wear rates of metal on polyethylene (MOP) hip replacements,” but that “The same maybe true for metal on metal (MOM) hips yet this has…

In 2006, the government-mandated Canadian organization Health Quality Ontario published the results of a study in Ontario Health Technology Assessment Series that aimed to “assess the safety and effectiveness of metal on metal (MOM) hip resurfacing arthroplasty for young patients compared with that of total hip replacement (THR) in the same population.”

This study, titled…

A 2012 report by AJ Smith et al. titled “Failure rates of stemmed metal-on-metal hip replacements: analysis of data from the National Joint Registry of England and Wales.” published in the prominent medical journal The Lancet aimed to “assess if metal-on-metal bearing surfaces lead to increased implant survival compared with other bearing surfaces…

In 2011, an article published by R. Underwood et al. in Journal of Bone and Joint Surgery titled “A comparison of explanted Articular Surface Replacement and Birmingham Hip Resurfacing components.” evaluated the relative safety and efficacy of the DePuy ASR hip replacement as compared to Birmingham Hip Resurfacing components.

In recent years, a…

Citing that “There is widespread concern regarding the incidence of adverse soft-tissue reactions after metal-on-metal (MoM) hip replacement” and “Recent National Joint Registry data have shown clear differences in the rates of failure of different designs of hip resurfacing,” a study by DJ Langton et al. (2011) aimed to “update the failure rates related to…

Published in 2012, an article by M. Seppänen et al. titled “Hip resurfacing arthroplasty: short-term survivorship of 4,401 hips from the Finnish Arthroplasty Register.” aimed to determine the short-term reliability of a variety of hip resurfacings used in 4,401 Finnish citizens, as compared to the reliability seen in 48,409  total hip arthroplasty…