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Novel approach for designing a low weight hip implant used in total hip arthroplasty adopting skeletal design techniques.

机译:采用骨骼设计技术设计用于全髋关节置换术的低重量髋关节植入物的新颖方法。

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摘要

Aseptic loosening is the major cause of failure of hip implants after total hip arthroplasty. Stress shielding of the femur is known to be the principal factor involved in the aseptic loosening of hip implants. Solid stems are found to have a greater rigidity; therefore, they transfer less load proximally, which results in greater stress shielding of the proximal femur. A stem of low stiffness alone would not suffice in achieving a reduced or optimal stress shielding. The femoral stem of the light weight hip implant has a skeletal design with a hexagonal base and neck cross-section. This novel design would ameliorate the implant fixation, aid in optimal rigidity, enhance the medullary revascularization, and offer better mobility to the patient.
机译:无菌性松动是全髋关节置换术后髋关节植入物失败的主要原因。众所周知,股骨的应力屏蔽是导致髋关节植入物无菌性松动的主要因素。发现实心茎具有更大的刚度。因此,它们向近端传递的负荷较小,从而导致对股骨近端的应力屏蔽效果更好。仅低刚度的茎不足以实现减小或最佳的应力屏蔽。轻型髋关节植入物的股骨柄具有六边形底部和颈部横截面的骨骼设计。这种新颖的设计将改善植入物的固定,帮助获得最佳的刚度,增强髓的血运重建,并为患者提供更好的活动性。

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