In orthopedic surgery, cortical bone cutting usually involves washing and cooling with physiological saline. However, how the saline changes the cutting behaviors of bone ultrasonic vibration cutting remains challenging. Hence, this paper simulates the clinical ultrasonic cutting condition in orthopedics to reveal the cutting behaviors of bone ultrasonic vibration orthogonal cutting immersed in physiological saline. The dynamic equation and motion process curves of ultrasonic cavitation bubbles were established. The results showed that the bone cutting immersed in physiological saline significantly improved the surface quality, reduced surface roughness and mechanical damage, and avoided large brittle cracks propagation. In saline immersed cutting, the physiological saline changes the mechanical behaviors of bone materials, resulting in plastic behaviors for the material removal and crack deflection. This study establishes the influence of physiological saline on the ultrasonic vibration cutting performance, providing guidance for orthopedic bone cutting surgery methods.

中文翻译：

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浸入生理盐水中皮质骨超声振动辅助切割的切割行为


在骨科手术中，皮质骨切割通常涉及用生理盐水清洗和冷却。然而，盐水如何改变骨超声振动切割的切割行为仍然具有挑战性。因此，本文模拟了骨科临床超声切割条件，揭示了浸入生理盐水中骨超声振动正交切割的切割行为。建立了超声空化气泡的动力学方程和运动过程曲线。结果表明，浸入生理盐水的骨切割显著提高了表面质量，降低了表面粗糙度和机械损伤，避免了大脆裂纹的扩展。在盐水浸泡切割中，生理盐水会改变骨材料的机械行为，从而导致材料去除和裂纹偏转的塑性行为。本研究确定了生理盐水对超声振动切割性能的影响，为骨科骨切割手术方法提供指导。