Reported event: an event regarding loosening involving an unknown trident shell was reported.The event was not confirmed.Method & results: device evaluation and results: not performed as product was not returned medical records received and evaluation: no medical records were received for review with a clinical consultant device history review: could not be performed as lot code information was not provided.Complaint history review: could not be performed as lot code information was not provided.Conclusion: the exact cause of the event could not be determined because insufficient information was provided.Additional information including lot details, operative reports, progress notes, x-rays and return of the device are needed to fully investigate the event.If further information becomes available or the product is returned, this investigation will be re-opened.Device not available.
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It was reported that patient's right hip was revised due to rotation of the shell after patient complaint of pain.Shell was found to be in a vertical position.A 52 mm trident hemispherical shell and liner were revised to a 60 mm titanium revision shell and liner.Rep reported that x-rays, medical records, and additional information are not available.
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