The patient was implanted with a patient-specific kls martin peek implant, fixated by kls martin plates and screws in (b)(6) of 2014.The doctor noted during initial operation the implant was not fitting properly and modified the implant with a burr.Subsequently, the patient complained about the implant being loose, an operation was performed on (b)(6) 2015, and upon re-entry it was determined there were broken fixation plates.The peek implant was intact and unbroken.It is unknown if the fit of the implant, lack of patient compliance, or other unknown factors were cause of the broken fixation plates.
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The device was optically assessed and tested against the skull model.The device fit properly in the model.In addition, there were no indications of material or manufacturing defects discovered.The material and device history records were reviewed based on the lot number provided and no abnormalities were detected.The results of the investigation conclude that the root cause for implant loosening is unknown and cannot be ascertained.If further information can be gathered that can add value to the contents of the investigated report, an additional follow-up report will be submitted.
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