(b)(4), this is a combined initial and final mdr report.D10: unknown oxford tibial component; item#unknown; lot# unknown.Unknown oxford femoral component; item#unknown; lot# unknown.No product was returned or pictures provided; visual and dimensional evaluations could not be performed.A review of the device manufacturing records could not be performed due to missing lot number.The device is used for treatment.Medical records were not provided.With the available information, a definitive root cause could not be determined.If any further information is found that would change or alter any conclusions or information, a supplemental report will be filed accordingly.Zimmer biomet will continue to monitor for trends.H3 other text : item number and lot number unknown.
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