Rawal B R, Bhatnagar Naresh
Department of Mechanical Engineering, Shri G.S. Institute of Technology and Science, Indore 452003, India.
Department of Mechanical Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.
Pak J Biol Sci. 2013 Dec 15;16(24):2073-5. doi: 10.3923/pjbs.2013.2073.2075.
The optimal surface for a cementless femoral stem has been a subject of debate for the past several years. Several researchers have stressed the need for research on how an implant surface shape contributes to long-term stability after implantation, in the field of orthopaedics. The introduction of optimized grooves on an implant proximal surface may enhance long-term stability of an implant. This study thus analyzes the effect of different groove dimensions and angles in a transverse plane on stress transmission by a constant load at the femur by using Finite Element Analysis (FEA). Results suggest that the tendency of stress transmission differs depending on the size, position and angle of the grooves. An optimized groove size and inclination plays a vital role for long-term stability of cementless femoral stems.
在过去几年中，非骨水泥型股骨柄的最佳表面一直是一个争论的话题。在骨科领域，一些研究人员强调了研究植入物表面形状如何在植入后有助于长期稳定性的必要性。在植入物近端表面引入优化的凹槽可能会增强植入物的长期稳定性。因此，本研究通过有限元分析（FEA）分析了横截面上不同凹槽尺寸和角度对股骨在恒定载荷下应力传递的影响。结果表明，应力传递的趋势因凹槽的尺寸、位置和角度而异。优化的凹槽尺寸和倾斜度对非骨水泥型股骨柄的长期稳定性起着至关重要的作用。
