Orthopedic bone drilling involves human as a part of action thus the role of drilling must be concise with its prime objective only. Excess heat generation and physical damage during drilling will lead to extended problems i.e. osteonecrosis and permanent death to the bone cells. To avoid that particular lose to the bone the heat generation should be as low as possible. In this study, an experiment is performed on bovine bone with varying rotational speed (600, 800, 1000, 1200 RPM) while keeping all other drilling parameters constant. Heat generation during bone drilling is measured using thermal imaging camera. After experiments, the histology examinations are performed to observe by morphological changes in drilled bones. From results, heat generation is observed to be increased with the rotational speed and results are shown with the help of thermo-graphic images. Histopathology of drilled bone specimens is also carried out for better understanding of changes in morphology of bone with change in temperature raise during bone drilling. Results conclude that heat generation in bone drilling is strongly concord with drill rotational speed (P≤0.014). Histopathology of drilled bones shows that level of osteonecrosis is increased in terms of number of empty lacunas with temperature raise.

中文翻译：

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使用红外相机和组织学评估皮质骨钻孔过程中的热量产生及其影响

骨科骨钻孔涉及人类作为行动的一部分，因此钻孔的作用必须简明扼要，仅以其主要目标为准。钻孔过程中产生的过多热量和物理损伤将导致长期问题，即骨坏死和骨细胞永久性死亡。为避免骨的特定损失，热量产生应尽可能低。在这项研究中，在保持所有其他钻孔参数不变的情况下，以不同的转速（600、800、1000、1200 RPM）对牛骨进行了实验。使用热成像相机测量骨钻孔过程中产生的热量。实验结束后，进行组织学检查，观察钻孔骨骼的形态变化。从结果来看，观察到热量随着转速的增加而增加，结果在热成像图像的帮助下显示。还进行了钻孔骨标本的组织病理学检查，以更好地了解骨钻孔过程中温度升高引起的骨形态变化。结果表明，骨钻的发热与钻头转速密切相关（P≤0.014）。钻孔骨的组织病理学表明，随着温度升高，就空腔隙的数量而言，骨坏死的程度增加。结果表明，骨钻的发热与钻头转速密切相关（P≤0.014）。钻孔骨的组织病理学表明，随着温度升高，就空腔隙的数量而言，骨坏死的程度增加。结果表明，骨钻的发热与钻头转速密切相关（P≤0.014）。钻孔骨的组织病理学表明，随着温度升高，就空腔隙的数量而言，骨坏死的程度增加。