Reported event: an event regarding periprosthetic fracture involving a mako tka software was reported.The event was confirmed through review of the provided medical records.Method & results: product evaluation and results: review of the case session files was not performed as case session data was not provided.Clinician review: a review of the provided medical records by a clinical consultant stated the following comment: confirmation: a periprosthetic distal femur fracture was confirmed postoperatively via x-ray reports and hospital notes.Root cause: the root cause cannot be determined without additional records and in particular radiographs.The question is really where exactly did the fracture occur? did it extend into one of the pin holes from the mako, into the box cut, or independent of these stress risers.Product history review: a review of device history records shows that (b)(6) was inspected and the quality inspection procedures were completed with no reported discrepancies complaint history review: a review of complaints in trackwise related to p/n 219999, robot number: (b)(6) shows 0 similar complaints for tka software - other.Conclusions: a review of the provided medical records by a clinical consultant stated the following comment: a periprosthetic distal femur fracture was confirmed postoperatively via x-ray reports and hospital notes.The root cause cannot be determined without additional records and in particular radiographs.The question is really where exactly did the fracture occur? did it extend into one of the pin holes from the mako, into the box cut, or independent of these stress risers.The exact cause of the event could not be determined because insufficient information was provided.Further information such as return of the case session/log data are needed to complete the investigation for determining root cause.No further investigation for this event is possible at this time as no devices and/ or insufficient information was received by stryker orthopaedics.If devices and / or additional information become available to indicate further evaluation is warranted, this record will be reopened.H3 other text : device not returned.
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