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1 The development of integrated interface for finite element analysis offemur 精里福路料立來立行力狀立 ANSYS CT 亮度亮度力行力不更浪更參料利行力 ANSYS 力 Abstract This study integrated previous developed programs to develop all-in-one user friendly windows based program. The analysis is based on the finite element analysis. This study presents a new method of using the integrated interface program to perform an automated three-dimensional finite element meshing for femur by using the ANSYS Software alone. This new methodology could provide a smooth boundary around the contour of femur as well as avoiding the ill-conditioned element. Therefore, the integrated software developed in this study, the finite element stress analysis is performed to compare with stress distribution of the intact femur, the femur created through previous software. Hopefully, it can effective shorten time for creating the finite element model as well as cost. At the same time, this new methodology developed here could be applied to other similar bone structure in the field of biomechanics research. Keywords: Finite Element Analysis, ANSYS Software, Femur, Biomechanics 1. Femur 兩 Epiphysis Diaphysis 年易

2 行不便療便了歷了了良不 [1-6] 了例料類力了 Total Hip Replacement THR 類例力力 Stress-Shielding Effect 流力流切良來若不 (1) 利切粒 (2) 不不年來不良狀了流力度 Brekelmans et al [7] 1972 年利行力行力 Huiskes and Chao [8] 年利力理力數理論 [9-28] 2-D 3-D 力度料更立論利 [28] 亮度力度來行利 ANSYS 立 3D 便行力力狀易料 ANSYS 料 ANSYS 來便不良不連 2. 料 ANSYS 兩不力亮度數利 ANSYS 力立料理立林立立不立不

3 略 0.33 CT 亮度亮度 2.1 流 1. CT Pixel 來 CT 輪廓 2. 來亮度亮度 255 (3) 亮度亮度數亮度行不數立 CT 數量六不利 ANSYS spline 令立 3. 立 ANSYS 行料 ANSYS 立行立立兩利兩立 4. 理數 CT 亮度都狀 CT 亮度利料來 CT CT PC 讀 tif 料料不數列 [28]: 度 = C 1 CT亮度 (1) 數 = C 2 度 3 MPa (2) C 1 = C 2 = 3418 料 CT 錄亮度連料數料 2.2 利流立數 CT 亮度亮度 3. 例行 A [28] 立力 B 力力料數不理來祿利 GEB75202EZ Hi-Speed 行 CT 亮度狀來不 (10 mm) 離 (2 mm) 來 3.1 A 了便立 (202 mm) 數不立

4 參 [9] 70 年 2872 Z 13 力力 XYZ 力 (z ) 力力來力令度零 A 力力都力力 MPa 力不連若數力力力路力 [26] 力力力便降力力 MPa 力降 3.2 B B 來亮度亮度數 A 力亮度力都力 ~192.7 MPa B 量數亮度亮度 B 數力論來亮度力狀力 B A 力六力降力兩理 A B B 力 A B 數來更 4. 論行力狀兩不亮度來不數力行 A B 來不論 B A 說了亮度不數了不數料數力力 A B 力 A 論

5 便易靈便立 B 烈論省參便行便更來來行例力立都來療良療類力良行 NSC : E CC3 參 1. D. R. Nolan, R. H. Jr., Beckenbaugh, R. D. Fitzgerald, R. D. Beckenbaugh, and M. B. Coventry, Complications of Total Hip Arthroplasty Treated by Reoperation, J. Bone Joint Surg. 57-A, pp. 977, J. O. Galante, Causes of Fracture of the Femoral Component in Total Hip Replacement, J. Bone Joint Surg., 62-A, pp. 670, R. D. Scott, R. H. Turner, S. M. Leitzes and O. E. Aufranc, Femoral Fractures in Conjunction with Total Hip Replacements, J. Bone Joint Surg., 57-A, pp. 496, E. A. Salvati., V. C. Im, P. Aglietti and P. D. Jr. Wilson, Radiology of Total Hip Replacements, Clin. Orthop., Vol. 121, pp. 74, R. S. Beckenbaugh and D. M. Ilstrup, Total Hip Arthroplasty: A Review of Three Hundred and Thirty-Three Cases with Long-term Follow-up, J. Bone Joint Surg., 60-A, pp. 306, T. A. Gruen, G. M. McNeice and H. C. Amstutz, Modes of Failure of Cemented Stem-Type Femoral Components, Clinical Orthopaedics and Related Research, No.141, pp , W. A. M. Brekelmans, H. W. Poort and T. J. J. H. Sloof, A New Method to Analyses the Mechanical Behavior of Skeletal Parts, Acta. orthop. Scand, Vol. 43, pp , R. Huskies and E. Y. S. Chao, A Survey of Finite Analysis in Orthopedic Bio-mechanics: The First Decade, J. Biomechanics, Vol.10, No.6, pp , M. E. Taylor, K. E. Tanner, M. A. R. Freeman and A. L. Yettram, Stress and Strain distribution Within the Intact Femur: Compression or Bending?, Medical Engineering & Physics, Vol. 18, pp. 122 ~ 131, Kelly J. Baker, Thomas D. Brown and Richard A. Brand, A Finite-Element Analysis of the Effects of Intertrochanteric Osteotomy on Stresses in Femoral Head Osteonecrosis, Clinical Orthopaedics and Related Research, Num. 249, pp. 183 ~ 198, Timothy P. Harrigan and William H. Harris, A Finite Element Study of the Effect of Diametral Interface Gaps on the Contact

6 Areas and Pressures in Uncemented Cylindrical Femoral Total Hip Components, Journal of Biomechanics, Vol. 24, pp. 87 ~ 91, Timothy P. Harrigan and William H. Harris, A Three-Dimensional Non-Linear Finite Element Study of the Effect of Cement-Prosthesis Debonding in Cemented Femoral Total Hip Components, Journal of Biomechanics, Vol. 24, pp ~ 1058, E. J. Cheal, J. A. Hipp and W. C. Hayes, Evaluation of Finite Element Analysis for Prediction of the Strength Reduction Due to Metastatic Lesions in the Femoral Neck, Journal of Biomechanics, Vol. 26, pp. 251 ~ 264, B. van Rietbergen, H. Weinans, H. W. J. Huiskes, A. Odgaard, A new method to Determine Trabecular Bone Elastic Properties and Loading Using Micromechanical Finite-Element Models, Journal of Biomechanics, Vol. 28, pp. 69 ~ 81, R. Müller and P. Rüegsegger, Three - Dimensional Finite Element modeling of Non-Invasively Assessed Trabecular Bone Structures, Medical Engineering & Physics, Vol. 17, pp. 126 ~ 133, Cinzia Zannoni, Raffaella Mantovani and Varco Viceconti, Material Properties Assignment to Finite Element Models of Bone Structures: A new Method, Medical Engineering & Physics, Vol. 20, pp. 735 ~ 740, E. Sim, W. Freimuller and T. J. Reiter, Finite Element Analysis of The Stress Distributions in The Proximal End of The Femur After Stabilization of A Pertrochanteric Model Fracture: A Comparison of Two Implants, Injury, Vol. 26, pp. 445 ~ 449, Tony M. Keaveny, X. Edward Guo, Edward F. Wachtel, Thomas A. Mcmahon and Wilson C. Hayes, Trabecular Bone Exhibts Fully Linear Elastic Behavior and Yields at Low Strains, Journal of Biomechanics, Vol. 27, pp ~ 1136, J. A. Simões, M. A. Vaz, S. Blatcher and M. Taylor, Influence of Head Constraint and Muscle Forces on the Strain Distribution Within the Intact Femur, Medical Engineering & Physics, Vol. 22, pp. 453 ~ 459, L. H. Keyak, S. A. Rossi, K. A. Jones, C. M. Les, H. B. Skinner, Prediction of Fracture Location in the Proximal Using Finite Element Models, Medical Engineering & Physics, Vol. 23, pp. 657 ~ 664, J. Stolk, N. Verdonschot, L. Cristofolini, A. Toni and R. Huiskes, Finite Element and Experimental models of Cemented Hip Joint Reconstructions can Produce Similar Bone and Cement Strains in Pre-Clinical Tests, Journal of Biomechanics, Vol. 35, pp. 499 ~ 510, , 立論劉良立論力立論林立立立論 J.H. Keyak and Y. Falkinstein, Comparison of in Situ and in Vitro CT Scan-based Finite Element Model Predictions of Proximal Femoral Fracture Load, Medical Engineering Physics, Vol. 25, pp , G. Cheng, P. Zalzal, M. Bhandari, J. K. Spelt and M. Papini, Finite Element Analysis of a

7 femoral Retrograde Intramedullary nail Subject to fait loading, Medical Engineering Physics, Vol.26, pp , 沈立立論 Z Y X A 力 B 力

8 Model A Model B Model A Model B 1.6E E+008 von Mises Stress (Pa) 1.2E E+007 von Mises Stress (Pa) 1.2E E E E Height (m) Height (m) 兩力六兩力 0.7 Model A Model B 1 Model A Model B 4.0E von Mises Strain (Model A) E E E-005 von Mises Strain (Model B) von Mises Strain (Model A) E E E-005 vonmisestrain(modelb) E E Height (m) 兩 Height (m) 兩

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untitled 力兩力讀兩 3.1 力力,,,,,,,,,,,,,,,,,,,,, O, X,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 類行數類數量類金 14 識說念類數不列 15 3.1.1 3.1.1.1 行類行類類類料料路類 1,,,,,,,,,,,,,,,,,, 類 1. 2,,,,,,,,,,,, 度理 3,,,,, 4,,,,,,,,,