3D Finite Elemental Analysis on Treatment of Sacral Fractures with Different Internal Fixation Implants

Abstract:

To provide the doctors a basis for treating sacral fractures and offer optimal surgical program, three-dimensional (3D) finite element method was used to simulate normal pelvis and the unstable pelvis sufferedIsection, IIsection and III section sacral fracture respectively.The unstable pelvises were respectively fixed with five different internal fixation implants types, which are respectively rectangular plate with cannulated screw, rectangular plate with solid screw, expansile bolt, convex plate with cannulated screw, convex plate with solid screw. The stress distribution and the X, Y, Z direction displacement of the sacrum were calculated for each sacral fracture treatment of five internal fixation implants after giving 500N axial load on lumbar vertebra and were compared with the normal pelvis, then the optimal surgery program were determined. After the analysis, by comparing the five combinations for each sacral fracture treatment of five internal fixation implants, the preferred combinations for the reset treatment of theIsection sacral fractures were rectangular plate with cannulated screw and convex plate with cannulated screw; The preferred combination for the reset treatment of the II section sacral fractures was expansile bolt; The preferred combination for the reset treatment of the III section sacral fractures was convex plate with cannulated screw.

• Periodical: Applied Mechanics and Materials (Volume 437)
• Pages: 325-330
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.437.325
• Online since: October 2013
• Authors: Jian Ping Wang*, He Jia Liu, Shao Kai Sun, Shi He Jian
• Keywords: Finite Element Analysis (FEA), Fracture, Implant, Internal Fixation, Sacrum

References

[1] Du Ming-kui. 3-dimension finite element analysis and clinic study of lockingcomperssion plate fixation for sacral fractuers[D]. Second Military Medical University, (2006).

[2] Denis F, Davis S, Confort T. Sacral fracture: an important problem. Retrospective analysis of 236 cases[J] . Clin Orthop Relat Res, 1988, 227: 67-81.

[3] Du Ming-kui, WANG Qiu-gen. Progress in the treatment of sacral fractuers[J]. Foreign Medical Sciences· Department of orthopedics medicine, 2002, 26(4): 198-201.

[4] Wen Zhi Zhao, Hong Jiang, Sheng Wei He, Lu Zhang, Xue Gang Sun. Numerical Simulation for Stress Distribution of Bones and Bone Plate Using Finite Element Method[J]. Applied Mechanics and Materials, 2012, 197: 93-97.

DOI: 10.4028/www.scientific.net/amm.197.93

[5] Yan Mei Qi, Li Jun Yang, Li Li Wang. Finite-Element Analysis and Optimization for Gradient Porous Structure of Artificial Bone[J]. Applied Mechanics and Materials, 2012, 271-272: 922-926.

DOI: 10.4028/www.scientific.net/amm.271-272.922

[6] Liu Jing-yi, HAN Li-ren. Anterior ring fixation with external fixator internal fixation for pelvic injuries[J]. Journal of Practical Orthopaedics, 2006, 12(4): 332-333.

[7] Du Ming-kui, WANG Qiu-gen, ZHANG Qiu-lin, WANG Hui, DING Zu-quan. 3-dimension finite elemental analysis on effects of locking compression plate for fixing unstable sacral fractures[J]. Journal of Second Military Medical University, 2006, 27(4): 420-423.

[8] Sun Zhi-bo, YU Zhi-hong, ZOU Hai-bing, DING Yuan-hong, KE Yong, ZHANG Qing-song. Efficacy of cannulated screw internal fixation for sacral fracture in 15 cases[J]. Biomedical engineering and clinical medicine, 2011, 15(3): 240-242.

[9] Li Le-feng, WANG Wen-jun, LI Jian. The application of cannulated screw in sacral fractures[J]. Asia-Pacific Traditional Medicine, 2009, 5(11): 134-135.

[10] J.T. Gorczyca, E. Varga, T. Woodside, T. Hearn, J. Powell, M. Tile. The strength of iliosacral lag screws and transiliac bars in the fixation of vertically unstable pelvic injuries with sacral fractures[J]. Injury, 1996, 27(8): 561-564.

DOI: 10.1016/s0020-1383(96)00078-2

[11] Hua-xing Hong, Zheng-hua Hong, Hai-xiao Chen, Lie Lin, Zhong Zhu. Iliosacral Screw Fixation of Transforaminal Sacral Fractures Using Local Anesthesia and CT[J]. Journal of the American College of Surgeons, 2010, 211(2): e7-e12.

DOI: 10.1016/j.jamcollsurg.2010.05.003

[12] Song Lian-xin, ZHANG Ying-ze, PENG A-xin, PAN Jin-she, WANG Qing-xian. The biomechanical study of vertically unstable pelvic fracture[J]. Chinese Journal of experimental surgery, 2000, 17(2): 126-127.