(b)(4).Complaint sample was evaluated and the reported event was confirmed.Reported event was confirmed due to visual inspection.Visual inspection of the returned plate noted discoloration/ debris in one of the screw holes.The product was sent to sem for further evaluation.Eds semi-quantitative elemental analysis of the discoloration indications on the plate revealed c, n, o, na, mg, p, cl, k, and ca as the major foreign elements.The source of these elements could be from various potential contaminants including biological soft tissue and bone, dried biological fluids (i.E.Blood), bone cement (calcium phosphate-based), corrosion/metal oxide product or various decontamination solutions (i.E.Hospital detergents).Therefore, the source of these elements is inconclusive.It is inconclusive whether the discoloration indications on the plate is a result of corrosion products, biological, or environmental contamination.The eds analysis of the discoloration free area on the fibular plate sample showed that the elements identified in the spectra were consistent with 22-13-5 stainless steel grade.- review of dhr noted the product was manufactured conforming to specifications.Device history record (dhr) was reviewed and no discrepancies relevant to the reported event were found.Root cause was unable to be determined.If any further information is found which would change or alter any conclusions or information, a supplemental will be filed accordingly.Zimmer biomet will continue to monitor for trends.
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