(b)(4).Date of birth: patient was born in (b)(6).Medical product: vanguard xp tibial tray, cat#: 195755 lot#: 677650.Vanguard xp femoral, cat#: 195214 lot#: 277150.Vanguard xp lateral tibial bearing.Cat#: 195814 lot#: 519100.Customer has indicated that the product will not be returned to zimmer biomet for investigation, as product location is unknown.The investigation is in process.Once the investigation has been completed, a follow-up mdr will be submitted.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.Multiple mdr reports were filed for this event, please see associated reports: 0001825034-2017-07884, 0001825034-2017-07885, 0001825034-2017-07886, 0001825034-2017-07887.
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