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Towards a Dynamic Model of the Kangaroo Knee for Clinical Insights into Human Knee Pathology and Treatment: Establishing a Static Biomechanical Profile

机译:走向动态模型的袋鼠膝关节对人类膝关节病理和治疗的临床见解:建立静态的生物力学轮廓。

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摘要

There is limited understanding of how patella realignment or patellectomy to surgically manage patellofemoral pain (PFP) affects knee biomechanics. By analysing marsupials like kangaroos that lack an ossified patella, actionable biomimetic insight for the management of end-stage PFP could be gained. This study aimed to provide the foundation of a multi-stage approach, by establishing a static biomechanical profile of the kangaroo stifle that informs the inputs and factors requiring consideration for future dynamic analyses. Volumetric CT and MRI sequences were obtained for four hindlimbs from two Macropus giganteus specimens, from which three-dimensional models of the stifles were created. Two limbs were dissected to visualise the insertion points, origins and lines of action of the quadriceps muscles and the knee extensor mechanism. Static measurements were obtained from the three-dimensional models to establish the biomechanical profile. The results confirmed structural differences in the kangaroo stifle with lack of an ossified patella, a prominent tuberosity and a shorter femur, which functionally affect the mechanical advantage and the torque-generating capability of the joint. The data reported in this study can be used to inform the inputs and constraints of future comparative analyses from which important lessons can be learned for the human knee.
机译:对于骨整形或pa骨切除术如何通过手术处理pa股股骨疼痛(PFP)如何影响膝关节生物力学,人们的了解还很有限。通过分析袋鼠(例如袋鼠)缺乏骨化骨的有袋动物,可以得到可行的仿生学见解,以管理晚期PFP。这项研究旨在通过建立袋鼠窒息动物的静态生物力学特征来提供多阶段方法的基础,该信息将为将来的动态分析提供参考信息和需要考虑的因素。从两个Macropus giganteus标本中获得了四个后肢的体积CT和MRI序列,从中创建了三维立体模型。解剖两个肢体,以观察股四头肌肌肉和膝盖伸肌机制的插入点,起源和作用线。从三维模型获得静态测量值以建立生物力学轮廓。结果证实了袋鼠st骨的结构差异,缺乏骨化骨,突出的结节和较短的股骨,在功能上影响了关节的机械优势和产生扭矩的能力。这项研究中报告的数据可用于为将来的比较分析提供输入和约束条件,从中可以为人的膝盖学习重要的经验教训。

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