Revised: 2 November 2012

Safety Information

Metal-on-Metal Hip Implants

Medsafe is providing the following information to patients, healthcare professionals, and the media about metal-on-metal (MOM) hip implants.

Questions and Answers

Explanations about what MOM hips are, what issues have occurred, and what has been done about them is provided in a question and answer format.


DePuy ASR Questions and Answers

Explanation of specific matters relating to the 2010 recall action involving the DePuy ASR Hip System


Timeline for DePuy ASR Hip System

Medsafe has compiled a detailed timeline beginning with the release of the DePuy ASR Hip System, through to the August 2010 recall action (hazard alert), and the information issued by other medical device regulators since then.


Stryker MITCH TRH Modular Head and Cup

Stryker have issued a hazard alert to surgeons to inform them to contact all of their patients with MITCH TRH modular head and cup implanted in combination with the Accolade femoral stem.


Management of Patients with Metal-on-Metal Hip Implants

Medsafe and the New Zealand Orthopaedic Association (NZOA) ( support the advice to healthcare professionals issued by the UK Medicines and Healthcare Products Regulatory Agency (MHRA) on the management of patients implanted with metal on metal hip replacements.


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