Information was received based on review of a journal article titled, ¿comparison of whole-blood metal ion levels among four types of large-head, metal-on-metal total hip arthroplasty implants.¿ this was a follow-up to a study which aimed to: to compare chromium, cobalt, and titanium ion concentrations in the whole blood of patients who received any of four types of total hip arthroplasty implants with a large-diameter femoral head; to assess the progression of ion levels over time; and to identify factors influencing metal ion concentrations.A patient identified in the article experienced elevated metal ion levels.No revision procedure has been reported to date and the patient's outcome is unknown.
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