Bone cutting is widely used in orthopaedic, dental and neuro surgeries and is a technicallyuddemanding surgical procedure. The major concern in current research is thermal damage ofudthe bone tissue caused by high-speed power tools, which occurs when temperature rises aboveuda certain tissue threshold value that is called bone necrosis. Hence optimization of cuttingudparameters is necessary to avoid thermal necrosis and improve current orthopaedic surgicaludprocedures. In this study a thermo-mechanical finite element model of bone cutting isudpresented that idealizes cortical bone as an equivalent homogeneous isotropic material.udMaximum temperature on the bone was found in the region where the thin bone layer (chip)udwas separated from the bone sample that was adjacent to the tool rake (i.e. front face of theudtool) Temperature values were calculated and compared for cutting conditions with andudwithout coolant (irrigation). The influence of bone thermal properties on the depth of thermaludnecrosis was discussed. The simulated cutting temperatures were compared with experimentaludresults obtained from bone drilling tests. The cutting processes identified critical variables andudcutting parameters that influence the thermo-mechanics of bone cutting.
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