Corrected data g1 manufacturing site for devices to sho.An event regarding loosening involving a trident shell was reported.The event was confirmed via clinician review of the provided medical records.Method & results: product evaluation and results: material analysis, visual, functional and dimensional inspections could not be performed as the device was not returned.Clinician review: a review of the provided medical information by a clinical consultant indicated: "the revision operative report describes the acetabulum as being clinically loose with no bony ingrowth.Revision tha surgery for loss of/lack of bony ingrowth of the acetabulum is confirmed.The root cause of lack of ingrowth cannot be determined from this limited amount of documentation." product history review: review of the device history records indicate 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 lot referenced.Conclusions: it was reported that the patient was revised due to loosening of the shell.The event was confirmed via clinician review of the provided medical records.The exact cause of the event could not be determined because insufficient information was provided.Further information such as return of the device, pathology reports, pre- and post-operative x-rays as well as patient history and follow-up notes are needed to complete the investigation for determining root cause.No further investigation for this event is possible at this time.If devices and/or additional information become available to indicate further evaluation is warranted, this record will be reopened.
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