正常大腿骨と人工股関節置換大腿骨の三次元応力解析

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タイトル別名
  • Three-Dimensional Stress Analysis in Femur Before and After Total Hip Replacement.
  • セイジョウ ダイタイコツ ト ジンコウ コカンセツ チカン ダイタイコツ ノ

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Artificial hip joint replacement is an effective treatment for serious forms of osteoarthritis and for disabling effects, for example, rheumatoid arthritis etc. Although a vast amount of biomechanics research has been devoted to developing a prosthetic device, the precise mechanism of loosening at the bone-stem interface has not been entirely solved. In this work, to confirm the load transfer between bone and stem following total hip replacement with a noncemented artificial joint of the Harris type, three-dimensional finite element analysis of the femur and hip was carried out before and after total hip replacement. A modeling method was also represented for the complicated three-dimensional geometry of the femur and pelvic bone. Young's modulus of each element in the osseous tissue was estimated from the distribution of mineral content obtained from an X-ray photograph. As a result, the effect of the three-dimensional shapes of an artificial hip joint on the fixation between bone and stem was confirmed from the stress distribution in the interface.

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