抄録
Various implants are employed to provide osteosynthesis of the trochanteric fracture of femur. However, pain due to the stress concentration in the bone and new fracture are caused, when the implant does not physically suit the patient. Therefore, detailed analysis of femoral deformation before and after implantation is important in clinical medicine and implant design. The purpose of this study is to evaluate the mechanical properties between fixation implant devices of different designs by holographic interferometry. The technique is a contactless whole-field method that is ideally suited to analyzing the deformation characteristics of complex structures such as the femur. A mechanically analogous composite femur, made from a glass fiber epoxy composite, was used to reduce variability between specimens. In this paper, the deformation of IMHS and Gamma AP in which the design differs in intramedullary nailing system was investigated. Still, the result of finite element analysis and experiment agreed qualitatively well on the deformation of the intact femur.
