Модел фемура за статичку анализу методом коначних елемената Др Снежана Вуловић, мр Никола Коруновић.

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Presentation transcript:

Модел фемура за статичку анализу методом коначних елемената Др Снежана Вуловић, мр Никола Коруновић

Материјалне карактеристике кости и имплантата

C.J. Brown, C.J. Wang, A.L. Yettram, P. Procter, Intramedullary nails with two lag screws, Clinical Biomechanics 19 (2004) 519–525 Implant material: Stainless steel: Young’s modulus 210 GPa; Poisson’s ratio 0.3 Femur: Cortical bone: Young’s modulus 17GPa Cancellous bone: Young’s modulus 1.3 GPa Intertrochanteric region: modulus 0.32 GPa

K. Sitthiseripratip, H. Van Oosterwyck, J. Vander Sloten, B. Mahaisavariya, E.L.J. Bohez, J. Suwanprateeb, R. Van Audekercke, P. Oris, Finite element study of trochanteric gamma nail for trochanteric fracture, Medical Engineering & Physics 25 (2003) 99–106

B. Serala, J.M. Garcia, J. Cegonino, M. Doblare, F. Seral, Finite element study of intramedullary osteosynthesis in the treatment of trochanteric fractures of the hip: Gamma and PFN, Injury, Int. J. Care Injured (2004) 35, The mechanical properties of the implants: modulus of elasticity 2.00E5 N/mm 2 Poisson’s ratio of 0.28.

Ching-Lung Tai, Chun-Hsiung Shih, Weng-Pin Chen, Shiuann-Sheng Lee, Yu-Liang Liu, Pang-Hsin Hsieh, Wen- Jer Chen, Finite element analysis of the cervico- trochanteric stemless femoral prosthesis, Clinical Biomechanics 18 (2003) S53–S58 modulus of elasticity Poisson’s ratios Cortical bone (composite glass fiber/epoxy resin) 14.2 GPa0.3 Cancellous bone (polyurethane foam) 50MPa0.3 C-T (titanium) 110 GPa0.3 PCA (Co–Cr alloy) prosthesis 220 GPa0.3

J. Schmitt, J. Meiforth, M. Lengsfeld, Development of a hybrid finite element model for individual simulation of intertrochanteric osteotomies, Medical Engineering & Physics 23 (2001) 529–539

J. Cubillo, C. J. Wang, Numerical Analysis of a Femur Resurfacing Cup, ISB XXth Congress - ASB 29th Annual Meeting, July 31 - August 5, Cleveland, Ohio modulus of elasticity Poisson’s ratios Cortical bone MPa 0.3 Cancellous bone 1300 MPa0.3 femur trochanteric 320 MPa 0.3 Cobalt Chromium MPa 0.3 Cement 2200 MPa i 2800 MPa

K. Stoffel, U. Dieter, G. Stachowiak, A. Gächter, and M. S. Kuster, Biomechanical testing of the LCP –how can stability in locked internal fixators be controlled?, Injury, Int. J. Care Injured 34 (2003) S-B11–S-B19 Implant material - pure titanium: Young’s modulus 115 GPa Poisson’s ratio 0.34 Stainless steel: E= 220 GPa; Poisson’s ratio 0.34 Tibia: Cortical bone: Young’s modulus 17 GPa; Poisson’s ratio 0.3 Cancellous bone: Young’s modulus 700 MPa; Poisson’s ratio 0.2