(b)(4).Complaint sample was evaluated and the reported event was confirmed.As returned, the device shows damage to the rim feature, taper, and anti-rotation feature.Damage was too severe for dimensional analysis.Device history records (dhr) was reviewed and no discrepancies relevant to the reported event were found.Root cause was unable to be determined.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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