(b)(4).Unknown date in 2010.Customer has indicated that the product will not be returned to zimmer biomet for investigation, as location is unknown.Reported event was confirmed by review of x-rays performed by the operative surgeon.Device history record (dhr) review was unable to be performed as the lot number of the device involved in the event is unknown.Complaint history review was unable to be performed, as the part number and lot number are 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.
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