It was reported that during cori tka procedure while burring all under exposure mode on the tibia in an xr case, surgeon complained that the bur "skipped" into the finished femoral condyle, taking out a chunk of bone.It is unknown how the issue was resolved and if surgery was somehow delayed.
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The real intelligence robotic drill, part number rob10013, serial unknown and used for treatment, was not returned for evaluation.A relationship between the reported event and the device could not be established.A visual/functional inspection cannot be completed as no device was returned for evaluation.While all products meet required manufacturing specifications prior to release a serial number or lot number is required to link the device to a dhr or nc investigation, or field service report.A complaint history review for similar reported/confirmed complaints has identified prior events.While the reported problem was not confirmed during evaluation, the most probable contributing factor(s) to the reported problem is improper method of burring implant region due to lack of familiarity/insufficient experience/training with the cori drill.The cori surgical technique manual (500230) provides a "warnings" section under "removing bone during tka" section that claims "cori application only tracks operative bone.Avoid contact to ligaments, tendons, and bone that are not intended to be cut".Per the clinical evaluation, review of the field report revealed no patient impact or injury and no interventions performed due to the reported event.Based on the information provided, the definitive root cause of the reported event could not be concluded; however, the cori with the ri drill provides 2x cutting volumes and >20% faster resection over the navio, therefore the increased burring/milling ability could not be ruled out as a potential contributing factor to the reported event.The patient impact beyond the reported ¿taking out a chunk of bone¿ could not be determined, although reportedly, the femoral component was successfully cemented/implanted.No further medical assessment can be rendered at this time.This failure is an identified failure mode within the risk assessment released during the timeframe of the incident.Although no further containment or corrective action is recommended or required at this time, all complaints are monitored and trended through post market surveillance activities.If the product associated with this event is returned or provided at a future date, this evaluation will be reopened for investigation.B5: update summary d10: add concomitants.G1: address updated.H6: update codes.
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It was reported that during cori tka procedure while burring all under exposure mode on the tibia in an xr case, surgeon complained that the bur "skipped" into the finished femoral condyle, taking out a chunk of bone.The surgeon did not note if this caused injury, or if it was outside the chamfer cut.The femur implant was successfully cemented.
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