engleski

HIGH - SPEED BONE DRILLING

In the case of fracture or crack of human bones, a surgery method gives the best healing results because a traumatologist drills the bone, sets the immobilization screws and plates and with that procedure achieves an optimal immobilisation. A problem occurs if during the bone drilling, the maximal temperature of the bone tissue around the hole increases above some critical limit. This may result in thermal necrosis, which means the irreversible death of the bone cells around the drilled hole and the consequence is that immobilisation screw joint comes loose over time. In order to find a solution to the problem of reducing maximal bone drilling temperature, this paper studies the problem and presents the results of measuring the maximal bone drilling temperature in a high-speed drilling process with a step drill and a classic surgical type of the drill.

bone necrosis ; drilling temperature ; high-speed drilling

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