(b)(6).Customer has indicated that the product will not be returned to zimmer biomet for investigation.Reported event was unable to be confirmed due to limited information received from the customer.Device history record (dhr) review was unable to be performed as the lot number of the device involved in the event is unknown.There are warnings in the package insert that this type of event can occur and risks are addressed in risk documentation.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.Simon, j., & j.(2007).The survivorship and results of total knee replacements converted from unicompartmental knee replacements.14, 154-157.This report is being submitted late as it has been identified in remediation.
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