A PHYSIOLOGICALLY ACCURATE MECHANICAL REPRESENTATION OF THE BONE-IMPLANT CONSTRUCT UNDER GAIT LOADS

Yıl 2012, Cilt: 16 Sayı: 3, 136 - 143, 01.06.2012

Rıza Bayoğlu A. Fethi Okyar

Öz

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Anahtar Kelimeler

Biomedical implant, intramedullary nail, design performance, contact model, finite element method

YÜRÜME YÜKLERİ ALTINDA KEMİK İMPLANT YAPISININ DOĞRU MEKANİK TEMSİLİ

Öz

Intramedullary nailing is a widely accepted technique utilized in the treatment of femoral fractures. Design of such devices should be accomplished based on physiological constraints, and loading of the femur, simulating in vivo conditions to prevent bone refracture and implant failure after surgical operation. It has been shown in literature that, walking is the most frequent dynamic activity of a patient, which necessitates testing implants mainly under walking loading conditions. In the present study, the response of the implanted femur having femoral mid-fracture as well as the intact femur were investigated at the instance of maximum hip contact force of the gait cycle in a finite element environment. Displacement and strain distribution on both bone- implant construct and intact bone were presented. The results may lead to an accurate estimation of the implants mechanical behavior in design stage, and be used in fatigue based analyses.

Anahtar Kelimeler

Biyomedikal implant, intramedüler çivi, tasarım performans, kontak model, sonlu elemanlar yöntemi

Kaynakça

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