Latest Research on Problems with Metal on Metal Hip Replacements


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Our clients often want to know more about what’s wrong with their metal on metal hip implants and what kind of medical complications they might face. Often the medical and orthopedic research is extremely technical and difficult to understand.

Below you’ll find research summaries in easier to read synopses that focus on the main points. Each metal on metal hip research summary also contains a link to the original source material.

Higher Wear Rates for Biomet Hips than Other MoM Hips

Title: Explant Analysis of the Biomet Magnum/ReCap metal-on-metal hip joint Abstract Metal-on-Metal (MoM) hip resurfacing implants and MoM total hip arthroplasty (THA) implants have recently been questioned by the medical community because of their high revision…


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Biomet M2a Magnum Hip is Hard to Revise

Title: Modular to Monoblock: Difficulties of Detaching the M2a-Magnum Head Are Common in Metal on Metal Revisions Where Are We Now? Metal-on-Metal total hip arthroplasty (MoM THA) implants consist of many metal parts that rub together over the course of normal use…


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Study: Biomet M2a Magnum Heads Greatly Increase Risks

Title: Modular to Monoblock: Difficulties of Detaching the M2a-Magnum Head Are Common in Metal-on-metal Revisions Abstract Metal-on-Metal total hip arthroplasty (MoM THA) implants are made up of a variety of components. One common component is the modular head; it is…


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Study Finds Metal Hips Cause Higher Metal Ion Levels than Resurfacings

Title: Higher Blood Cobalt and Chromium Levels in Patients with unilateral metal-on-metal total hip arthroplasties compared to hip resurfacing Abstract High cobalt and chromium levels in the blood are known to cause negative side-effects in patients with metal on…


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~9% Chance of Pseudotumors 5 Years After Biomet Magnum M2a Hip

Title: A 5-year survival analysis of 160 Biomet Magnum M2a metal-on-metal total hip prostheses Abstract Large-head metal-on-metal (MoM) total hip arthroplasties (THA), or hip implants, have high failure rates. This study looks at the conditions of 160 hip devices 5…


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Monitor for Cobalt Chromium Levels and Pseudotumors Very Early On

Title: Clinical and Wear Analyses of 9 Large Metal-on-Metal Total Hip Prostheses Abstract All patients in this study had the Biomet Magnum (M2a-Magnum™) hip implant with a Recap cup and Taperloc (Taperloc1 Hip Stem) or Mallory stem. This study attempts to figure out…


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Metal Hips Cause Levels 26x Cobalt Increase and 15x Chromium Increase

Title: The Effect of Different Bearing Surfaces on Metal Ion Levels in Urine Following 28mm Metal-on-Metal and 28mm Metal-on-Polyethylene Total Hip Arthroplasty Abstract Total hip arthroplasty (THA), or hip replacement surgery, is known to increase levels of metal…


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Metal on Metal Hips Linked to Early Onset Dementia and Depression

Title: “Neuropsychiatric symptoms following metal-on-metal implant failure with cobalt and chromium toxicity” Abstract Many metal-on-metal (MoM) total hip replacement implants have been recalled due to high failure rates. This study assesses the mental health of 10…


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Pseudotumor in a Patient with a Biomet Hip Implant

Research Title: Pseudotumor in Large-Diameter Metal-on-Metal Total Hip Articulation Abstract This case study focuses on a patient who experienced pain in her hip following a large-diameter metal-on-metal (MoM) hip replacement. She also developed a pseudotumor, which…


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Vision Loss from Cobalt Poisoning of the Eye from MoM Hip Replacement

Title: Cobalt-Chromium Metallosis With Normal Electroretinogram Background: The popularity of Metal-on-Metal (MoM) hip implants, which are typically made out of cobalt and chromium, has made cobalt poisoning of the eye more common. This condition is called ocular…


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Want to Discuss Your Metal on Metal Hip Case?

Mctlaw is a national leader in defective metal on metal hip lawsuits. We have contacts within the orthopedic community and extensive medical and technical knowledge about these defective orthopedic hip replacements.

Our attorneys have litigated against almost all of the manufacturers in the orthopedic industry. In fact, our firm filed the FIRST metal-on-metal hip lawsuit in the United States.

Contact us at 888-952-5242 or fill out the online form below. Our Firm will review your information to determine if we can represent you.  We might even be able to review some of your medical information over the phone.


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