During a revision surgery to remove non x-spine cervical plate and replace it with irix-c implant on adjacent levels, there were complications with hard bone.The surgeon used several tools to try to start a pilot hole; the freehand awl was bent, the guided angled awl was broken, a 14mm drill was bent, a 14mm drill was broken, and one straight awl was bent.There were no patient injuries due to the broken and bent instruments.Surgeon was able to start a pilot hole with a self-drilling screw after several attempts.
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