(b)(4).Visual examination of the provided picture found fracture of the articular surface with excessive wear.The device was not returned for further evaluation.Review of the device history record(s) identified no deviations or anomalies during manufacturing.Insufficient information provided to perform a compatibility check.Medical records were not provided.This complaint was confirmed.A definitive root cause cannot be determined.No corrective actions, preventive actions, or field actions resulted after investigation of this event.Additional associated products: unk femoral, unk tibial.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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