Chinese Journal of Tissue Engineering Research ›› 2019, Vol. 23 ›› Issue (12): 1893-1897.doi: 10.3969/j.issn.2095-4344.1092

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Design and biomechanical analysis of the femur proximal modular intercalary prosthesis

Zhong Junqing, Hu Yongcheng   

  1. Department of Orthopedic Oncology, Tianjin Hospital, Tianjin 300211, China
  • Online:2019-04-28 Published:2019-04-28
  • About author:Zhong Junqing, Master, Attending physician, Department of Orthopedic Oncology, Tianjin Hospital, Tianjin 300211, China

Abstract:

BACKGROUND: There are few studies on the biomechanical characteristics of large segment bone defects caused by femur proximal tumor resection filled with prosthesis, and the feasibility of prosthesis remains controversial.

OBJECTIVE: To explore the feasibility of femur proximal modular intercalary prosthesis from a biomechanical perspective.
METHODS: Image data of the total femur were acquired by CT for three-dimensional reconstruction in Mimics 10.01 software. The reconstructed femur in IGES format was imported into Abaqus 6.91 software to undergo the finite element analysis. Femur proximal modular intercalary prosthesis was used to reconstruct the proximal femur, central diaphysis and distal femur and loaded by the normal walking force, and then the peak stress and stress nephogram were obtained.
RESULTS AND CONCLUSION: (1) After diaphysis defect reconstructed by femur proximal modular intercalary prosthesis, the bone cement stress peak did not exceed the fatigue strength itself. Cortical bone stress peak did not exceed the maximum compressive stress peak itself. Stress concentration of the femur proximal modular intercalary prosthesis appeared at the junction of the prosthesis and bone-sectional and rebuild part of the prosthesis. (2) In summary, the femur proximal modular intercalary prosthesis reconstructs the femoral diaphysis defect, which is consistent with the requirements of human biomechanics, so it can be applied in clinical practice.

Key words: Femur, Finite Element Analysis, Biomechanics, Tissue Engineering

CLC Number: