# Hip replacement failure: metal-on-metal and metallosis

> Why metal-on-metal hip implants can fail through metallosis, requiring painful revision surgery.

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**Last updated:** 2026-06-11

Metal-on-metal hip implants were promoted as more durable alternatives to traditional hip replacements. However, friction between metal components releases cobalt and chromium ions into the bloodstream, a condition called metallosis.

Metallosis can cause pseudotumors (non-cancerous growths), bone and tissue death (osteolysis), implant loosening, and severe pain. Revision surgery is often complex and carries higher risks than primary replacement.

If you received a metal-on-metal hip implant (such as DePuy ASR, Stryker Rejuvenate, or Zimmer Durom) and experienced complications or revision, document your implant information and consult a qualified attorney.

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*Educational guide from DrugsMonitor.com. Not legal advice.*