Complaint sample was evaluated and the reported event was confirmed.Visual inspection of the returned device found heavy burring of the cutting surface, tarnished appearance from repeated reprocessing and cleaning, and black colouring penetration of the coating surface associated with excessive heat from friction.Dimensional and hardness checks were carried out and the drill bit was found to be conforming to drawing specification.Device history record (dhr) was reviewed and no discrepancies 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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