髌骨横行骨折下镍钛记忆合金聚髌器的状态模拟分析及其对康复训练的指导
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华南理工大学国家金属材料近净成形工程技术研究中心

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O242.21

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Finite simulation of Nickel-titanium memory alloy patellar converters in transverse patellar fractures and its guidance for rehabilitation training
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National Engineering Research Center of Near-net-shape Forming for Metallic Materials

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    摘要:

    为了进一步完善髌骨横行骨折的康复治疗方案,本研究采用Abaqus进行了镍钛记忆合金聚髌器和骨组织接触的数值模拟。通过对横行骨折髌骨进行生物力学加载,系统地分析了聚髌器、髌骨、股四头肌张力以及骨折断面力学环境的多重变化,得出以下结论:屈膝角度较小时聚髌器主要受弯矩,内固定的稳定性降低;屈膝角度较大时聚髌器主要受牵张,内固定的稳定性得到增加;屈膝角度在0~150°下最大股四头肌肌力介于240~670N之间,是聚髌器安全的工作范围;适宜早期锻炼的屈膝角度介于60~90°之间,从而为骨折康复训练提供了可靠的依据。

    Abstract:

    In order to further refine the rehabilitation protocols for transverse patellar fractures, this study conducted numerical simulations using Abaqus to model the interaction between a nickel-titanium shape memory alloy patellar tensioner and bone tissue. By subjecting the fractured patella to biomechanical loading, a comprehensive analysis of multiple variations in the mechanical environment of the patellar tensioner, patella, quadriceps muscle tension, and fracture site was systematically conducted. The following conclusions were drawn: Lower degrees of knee flexion result in primarily bending moments on the patellar tensioner, reducing internal fixation stability, while greater degrees of knee flexion lead to primarily tensile forces, increasing internal fixation stability. Within the knee flexion range of 0 to 150 degrees, the maximum quadriceps muscle force ranged from 240 to 670 N, representing a safe working range for the patellar tensioner. The appropriate range for early rehabilitation exercises falls between 60 and 90 degrees of knee flexion, providing a reliable foundation for fracture recovery training.

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蔡冬晴,罗文恺,游东东. 髌骨横行骨折下镍钛记忆合金聚髌器的状态模拟分析及其对康复训练的指导[J]. 科学技术与工程, , ():

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  • 收稿日期:2023-12-06
  • 最后修改日期:2024-06-27
  • 录用日期:2024-07-09
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