(b)(4).Customer has indicated that the product will not be returned to zimmer biomet for investigation as the product location is unknown.Reported event was unable to be confirmed as there was no specific event reported to confirm; however x-ray review indicated an oblique fracture lucency along the medial proximal femur.Lucencies along the proximal femur representing mild osteolysis were observed as well.Device history record review was unable to be performed as the lot number of the device involved in the event is unknown.Root cause was unable to be determined as the necessary information to adequately investigate the reported event was not provided.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.Concomitant medical products: part # unk/ unknown liner/ lot #unk, part # unk/ unknown head/ lot # unk, part #unk / unknown cup/ lot # unk.Multiple mdr reports were filed for this event, please see associated reports: 0001823034-2019-05297, 0001822565-2019-05510.
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