Per results relayed by the engineer: several features were found to be out of specification.All of them are likely due to damage of the bearing during the assembly process.Damage to one of the alignment slots (which was likely caused during the assembly process) shows that the bearing was not properly aligned prior to impaction.The locking tab on the bearing has also been damaged during the assembly process.Once the locking tab has been deformed, proper assembly of the components cannot be obtained.The product left biomet conforming.The physical condition of the returned product shows the bearing was not properly positioned during assembly.The complaint of ¿the bearing alignment slots did not line up with the tabs of the humeral tray¿ in unconfirmed.Review of device history records found these units were released to distribution with no deviations or anomalies.Review of complaint history found no additional issues for this part/lot.Device incorrectly prepared for use or modified; inconclusive-root cause cannot be determined; use error caused or contributed to event notified sales rep of completion of investigation.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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It was reported that during a right total shoulder arthroplasty on (b)(6) 2014, the bearing would not lock into the tray.After two attempts, the surgeon was asked to evaluate the setup.At that time, it was revealed that the bearing alignment slots did not line up with the tabs of the humeral tray.A back-up e1 was used without any problems.No further information has been provided.No delay.
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