Abstract
During orthopaedic drilling for screw fixation, if temperature rises above a certain level, thermal damage to bone cells occurs. This damage is in the form of cell death and is permanent in nature. The cell death, termed as thermal necrosis cause slackening of screw fixations. The heat generation studies have proved that if temperature increases to 47 °C and remains the same for one minute, thermal necrosis could occur. So to avoid thermal necrosis controlling and prediction of temperature is necessary. In this research work, mathematical model is developed with the help of multiple regression analysis for prediction of bone drilling temperature with regression analysis an mathematical model is suggested that can predict the temperature at bone drilling site. The data required for the mathematical model is the value of drill speed, feed rate and drill tool diameter. These values are collected by drilling a sheep rib bone. Experimentation is performed with combinations of drill speed, feed rate and drill tool diameter at three levels each, counts to total 27 trials.
Published Version
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