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26 May 2015 : Laboratory Research  

Development of Femoral Head Interior Supporting Device and 3D Finite Element Analysis of its Application in the Treatment of Femoral Head Avascular Necrosis

Dongmin XiaoABCDEF, Ming YeBCDEF, Xinfa LiCDEF, Lifeng YangCEF

DOI: 10.12659/MSM.893354

Med Sci Monit 2015; 21:1520-1526

Abstract

BACKGROUND: The aim of this study was to develop and perform the 3D finite element analysis of a femoral head interior supporting device (FHISD).

MATERIAL AND METHODS: The 3D finite element model was developed to analyze the surface load of femoral head and analyze the stress and strain of the femoral neck, using the normal femoral neck, decompressed bone graft, and FHISD-implanted bone graft models.

RESULTS: The stress in the normal model concentrated around the femoral calcar, with displacement of 0.3556±0.1294 mm. In the decompressed bone graft model, the stress concentrated on the femur calcar and top and lateral sides of femoral head, with the displacement larger than the normal (0.4163±0.1310 mm). In the FHISD-implanted bone graft model, the stress concentrated on the segment below the lesser trochanter superior to the femur, with smaller displacement than the normal (0.1856±0.0118 mm).

CONCLUSIONS: FHISD could effectively maintain the biomechanical properties of the femoral neck.

Keywords: Bone Transplantation, Biomechanical Phenomena, Femur - physiology, Femur Head Necrosis - surgery, Finite Element Analysis, Hip Prosthesis, Stress, Mechanical, Weight-Bearing

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750