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Analytical and experimental study of effective parameters on process temperature during cortical bone drilling
Hamed Heydari1, Navid Cheraghi Kazerooni1, Mojtaba Zolfaghari1
11 Department of Mechanical Engineering, Arak University, Arak, Iran.
Summary
This study presents an analytical model to predict bone drilling temperature, crucial for orthopedic surgery. Optimized parameters minimize heat, reducing necrosis risk during internal fixation procedures.
Area of Science:
- Biomedical Engineering
- Orthopedic Surgery
- Materials Science
Background:
- Bone drilling generates heat, potentially causing necrosis and compromising orthopedic internal fixation.
- Understanding and controlling temperature during bone drilling is critical for surgical success.
Purpose of the Study:
- To develop and validate an analytical model for predicting temperature during bone drilling.
- To investigate the influence of drilling parameters on bone temperature.
- To identify optimal parameters for minimizing drilling-induced heat.
Main Methods:
- An analytical heat transfer model combining tool-chip equilibrium and bone heat distribution was developed.
- Experimental validation was performed using bovine bone samples.
- Response surface methodology was employed to derive a mathematical model from experimental data.
Main Results:
- The analytical model accurately predicted process temperatures, correlating well with experimental findings.
- Increased rotational speed directly elevated drilling temperature.
- Feed rate exhibited a complex effect on temperature due to tool-bone contact time and friction variations.
Conclusions:
- The developed analytical model provides a calibration-free method for predicting bone drilling temperature.
- Optimal drilling parameters (2.5mm tool diameter, 500 rpm, 30 mm/min feed rate) were identified to achieve a minimal temperature of 35.6°C.
- Controlling drilling temperature is essential for preventing thermal necrosis in orthopedic procedures.
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