title: Development of Femoral Head Interior Supporting Device and 3D Finite Element Analysis of its Application in the Treatment of Femoral Head Avascular Necrosis.
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).
  
  
  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.
authors.affiliation: Department of Orthopedics, Hunan Provincial Yongzhou Central Hospital (Affiliated Yongzhou Hospital of Nanhua University), Yongzhou, Hunan, China (mainland).
authors.forename: Dongmin
authors.initials: D
authors.lastname: Xiao
authors.affiliation: Department of Orthopedics, Hunan Provincial Yongzhou Central Hospital (Affiliated Yongzhou Hospital of Nanhua University), Yongzhou, Hunan, China (mainland).
authors.forename: Ming
authors.initials: M
authors.lastname: Ye
authors.affiliation: Department of Orthopedics, Hunan Provincial Yongzhou Central Hospital (Affiliated Yongzhou Hospital of Nanhua University), Yongzhou, Hunan, China (mainland).
authors.forename: Xinfa
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Orthopedics, Hunan Provincial Yongzhou Central Hospital (Affiliated Yongzhou Hospital of Nanhua University), Yongzhou, Hunan, China (mainland).
authors.forename: Lifeng
authors.initials: L
authors.lastname: Yang
mesh_terms: D001696:Biomechanical Phenomena; D016025:Bone Transplantation; D005269:Femur / Q000033:anatomy & histology / Q000502:physiology*; D005271:Femur Head Necrosis / Q000503:physiopathology* / Q000601:surgery*; D020342:Finite Element Analysis; D006622:Hip Prosthesis; D006801:Humans; D013314:Stress, Mechanical; D016474:Weight-Bearing