Zimmer biomet complaint (b)(4).No product was returned or pictures provided; visual and dimensional evaluations could not be performed.Part and lot identification are necessary for review of device history records; neither were provided for the screws.A definitive root cause cannot be determined.If any further information is found which would change or alter any conclusions or information, a supplemental report will be filed accordingly.Zimmer biomet will continue to monitor for trends.Multiple mdr reports were filed for this event, please see associated reports: 0001032347-2020-00399, 0001032347-2021-00275.Medical products: tan left pm-tmj & model, part# tmjpm-2581, lot# 933510a.Unknown fossa screw, part# ni, lot# ni.(b)(6).Report source: (b)(6).
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