Analysis of impulsive stress wave propagating from distal femur to hip joint

Takaaki Sarai, Takayuki Inoue, Kouichi Kuramoto

Research output: Contribution to journalArticle

Abstract

Three-dimensional finite element model of femur and pelvis was prepared and the propagation of impulsive stress wave from the distal femur to the hip joint was analyzed by the dynamic finite element method. The finite element model with no articular cartilage was also used and the influence of cartilage on the impulsive stress was discussed. The stress concentration is mainly found around the femoral neck. The absolute value of minimum principal stress increases in the medial side, and the maximum principal stress increases in the lateral side during the propagation of stress wave. In this case, the absolute value of maximum principal stress is larger than that of minimum one. The stress of pelvis is small compared with that of femur, indicating that the impulsive stress is absorbed by traveling through the cartilage. The stress in the femoral neck and the pelvis becomes large in the case of no cartilage model, therefore it can be said that the hip joint with no cartilage has a higher risk of bone fracture.

Original languageEnglish
Pages (from-to)1657-1662
Number of pages6
JournalNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume75
Issue number760
DOIs
Publication statusPublished - Dec 2009

Keywords

  • Articular cartilage
  • Biomechanics
  • Femur
  • Finite element method
  • Hip joint
  • Impulsive stress wave
  • Pelvis

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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