An event regarding wear involving a trident liner was reported.The event was confirmed.Method & results: device evaluation and results: visual inspection was performed as part of the material evaluation and indicated the following comments: metal transfer markings observed on distal side of liner.Mar required.Visual inspection was performed as part of the material analysis report (mar), dated 18-september-2019.This inspection indicated: damage consistent with impingement against the stem was observed on rim of the insert and sleeve.Metal transfer markings and scratches were observed on the articulating surface of the alumina insert.Damage consistent with the explantation process was observed on the proximal surface of the sleeve.Clinician review: a review of the provided medical records and/or x-rays by a clinical consultant indicated: 8/13/19 brief handwritten operative note.".Post.Approach.Metalosis lymph nodes and 100 ml graphite black.Excision/lavaged.Multiple ceramic head fragments/stem/ceramic liner removed.Cement mantle intact.New components inserted." no clinical or past medical history, no comprehensive operative reports, no x-rays, no examination of explanted components, and no surgical pathology reports.While the brief, handwritten revision operative note seems to partially confirm the event description, there is insufficient data to create a report for this event.Device history review: all devices were manufactured and accepted into final stock with no relevant reported discrepancies.Complaint history review: there have been no other similar events for the reported lot.Conclusion the exact cause of the event could not be determined because insufficient information was provided.Additional information including operative reports, progress notes, and x-rays are needed to fully investigate the event.If further information becomes available or the product is returned, this investigation will be re-opened.
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