It was reported that after surgeon burred distal femur, he burred holes for femoral 4 in one cutting block.He then put the cutting block spikes into the burred holes and used the visualization tool to navigate cutting block.When the block was centered in the burr holes the cut was proud by about 10mm.The surgeon then navigated the block approx 10mm posterior from the burr holes and it indicated it was right on plan.So the burr holes were not in correct spot but approximately 10mm anterior.Noted that during initial burring of distal femur is was notice that the tracker arrays were very loose on the handpiece and would not let surgeon burr.Once tightened he was able to burr distal femur and continue.Surgery was completed using visualization tool to navigate to plan.
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