The patient had very hard sclerotic bone and when placing one pedicle screw without using a tap, the tip of the cannulated screw driver was broken.The surgery continued without delay.When inserting another pedicle screw a tap was used but only for the first 20mm of the screw trajectory.The neck of this screw broke during the final insertion turn with a solid screw driver.As the construct involved multiple pedicle screws, the surgeon decided to leave the shaft of the pedicle screw in the bone and the surgery continued without delay.
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