An event regarding disassociation involving an adm liner and ceramic head was reported.A review by a clinical consultant confirmed a fracture of a bone screw.Method & results: device evaluation and results: a visual, functional and dimensional inspection was not performed as the device was not returned.Medical records received and evaluation: a review of the medical records by a clinical consultant noted the presence of a gap cup with broken screws and extensive bone graft on x-ray indicates this prior surgery was clearly a revision surgery for otherwise unknown problems.Conclusions: the exact cause of the event could not be determined because insufficient information was provided.Further information such as return of device, operative reports, additional x-rays, patient history & follow-up notes are needed to investigate this event further.If additional information and/or device become available, this investigation will be reopened.
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