Three-dimensional finite element analysis on stress changes after rib-vertebral unit fixation for tuberculosis of thoracic spine (T6-8)

doi:10.3969/j.issn.2095-4344.2015.17.025

Abstract

Abstract:

BACKGROUND: At present, there is lack of relevant biomechanical model for the T₆-T₇-T₈ rib-vertebral fix unit. In addition, there is no support of parameters of basic studies on reasons and reasonable explanation of screw breakage, poor quality of bone fusion and adjacent segment degeneration.

OBJECTIVE: To develop a three-dimensional finite element model of bone graft with vertebral tuberculosis debridement and posterior rib-vertebral unit fixed system through tuberculosis of thoracic spine (T_6-8), and to analyze the stress so as to improve it.

METHODS: Spiral CT data of one male patient (172 cm, 71 kg, 39-year-old) with T₇ vertebral tuberculosis were imported into computer to develop a three-dimensional finite element model of bone graft with vertebral debridement and posterior vertebral unit fixed system through tuberculosis of T₆_-₈ by Mimics 13.0 and Ansys 11.0 finite element software. 500 N pressure and 10 N•m torque were loaded to the vertebral body by 3 kinds of physiological loads which simulated flexion, extension and lateral bending. The stress distribution of fixation devices under different loads was compared.

RESULTS AND CONCLUSION: At the positions of anteflexion and extension, the stress mainly concentrated to screw tail, and the stress of upper screw was greater than the middle and lower screws. For connecting rods, the stress of the middle was always less than the lower middle and the middle stress was zero. At lateral bending position, the stresses of upper and middle screw tail were quite, and the unilateral stress of connecting rod was also equivalent. For three different dynamics at the same point, the stress of middle connecting rod increased in the lateral bending motion, and the stress of lower screw tail was equivalent. These data suggested that it is prone to fatigue fracture at upper screw tail by bone graft with vertebral tuberculosis debridement and posterior rib-vertebral unit fixed system through tuberculosis of thoracic spine (T₆_-₈) at the three positions of anteflexion, extension and lateral bending. The lower connecting rod at the positions of anteflexion and extension and the middle connecting rod at the position of lateral bending easily cause fatigue fracture.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

全文链接：

Key words: Thoracic Vertebrae, Tuberculosis, Internal Fixators, Bone Nails, Finite Element Analysis, Biomechanics

CLC Number:

R318

Zhao Yan, Jiang Jian-ming, Li Xiao-he, Huo Hong-jun, Zuo Yuan, Xiao Yu-long, Yang Xue-jun. Three-dimensional finite element analysis on stress changes after rib-vertebral unit fixation for tuberculosis of thoracic spine (T₆_-8)[J]. Chinese Journal of Tissue Engineering Research, 2015, 19(17): 2762-2767.

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References

[1]韦兴,何建军,侯树勋,等.胸椎椎弓根-肋骨复合体的解剖及影像学研究[J].中华外科杂志,2010,48(17):1313-1316.
[2]谢陶敢,陈其昕,李方才,等.胸椎椎弓根-肋骨单元与椎弓根的CT测量[J].中国脊柱脊髓杂志,2008,18(9):665-668.
[3]徐荣明,刘观焱,赵红勇,等.胸椎关节突关节解剖学测量与经关节螺钉固定的关系[J].中国骨与关节损伤杂志,2010,48(6):1115-1116.
[4]Lee GY, Massicotte EM, Ramperaaud YR, et al. Clinical accuracy of cervicothoracic pedicle screw placement:a comparison of the“open”lamino-foraminotomy and computer-assisted techniques.J Spinal Disord Tech. 2007; 20(1):25-32．
[5]Xu WX, Xu RM, Jiang WY,et al. Clinical study on surgical treatment for thoracolumbar burst fractures.Zhongguo Gu Shang. 2011;24(7):547-552.
[6]Lefranc M, Peltier J, Fichten A, et al.Dual, minimally invasive fixation in acute, double, thoracic spine fracture.Minim Invasive Neurosurg. 2011;54(5-6):253-256.
[7]Molina C, Sciubba DM, Chaput C,et al. A computed tomography-based feasibility study of translaminar screw placement in the pediatric thoracic spine. J Neurosurg Pediatr. 2012;9(1):27-34.
[8]Kalani MY, Martirosyan NL, Little AS, et al.Tumoral calcinosis presenting as a deformity of the thoracic spine. J Neurosurg Pediatr. 2011;8(6):584-587.
[9]Sun BF, Dong Y, Lü JY, et al.Expansive pedicle screws fixation combined with Wright artificial bone implantation for treatment of thoracolumbar burst fracture of the elderly patients.Zhongguo Gu Shang. 2011;24(7):544-546.
[10]Dvorak M, MacDonald S, Gurr KR, et al.An anatomical，radiographic，and biomechanical assessment of extrapedicular screw fixation in the thoracic spine. Spine(Phila Pa 1976). 1993;18(12):1689-1694.
[11]Hussain M, Natarajan RN, Chaudhary G,et al.Simulation of inhomogeneous rather than homogeneous poroelastic tissue material properties within disc annulus and nucleus better predicts cervical spine response: a C3-T1 finite element model analysis under compression and moment loadings. Spine (Phila Pa 1976). 2011;36(4):245-255.
[12]郝志强,刘志斌.脊柱结核外科诊疗进展[J].中华临床医师杂志(电子版),2013,7(15):7135-7137.
[13]Fei Q, Li QJ, Yang Y, et al.Three-dimensional finite element model of thoracolumbar spine with osteoporotic vertebral compression fracture. Zhong hua Yi Xue Za Zhi. 2010;90(41): 2943-2946.
[14]He D, Wu L, Chi Y, et al.Facet joint plus interspinous process graft fusion to prevent postoperative late correction loss in thoracolumbar fractures with disc damage: finite element analysis and small clinical trials. Clin Biomech (Bristol, Avon). 2011;26(3):229-237.
[15]Cheng FH, Shih SL, Chou WK, et al.Finite element analysis of the scoliotic spine under different loading conditions. Biomed Mater Eng. 2010;20(5):251-259.
[16]刘观鼓,徐荣明,赵红勇,等.胸椎后路经关节肋骨螺钉固定技术的提出及其解剖学研究[J].中华外科杂志,2010,48(14):1115-1116.
[17]胡哲,张少杰,王星,等.肋横突关节关节面的形态特点及其意义[J].中国临床解剖学杂志,2014,5(32):538-543.
[18]李筱贺,李少华,由博,等.中下胸椎肋凹位置的研究及侧前方置钉数字化模拟[J].中国临床解剖学杂志,2010,28(3): 251-254.
[19]He D,Wu L,Chi Y,et al.Facet joint plus interspinous process graft fusion to prevent postoperative late correction loss in thoracolumbar fractures with disc damage:finite element analysis and small clinical trials. Clin Biomech(Bristol,Avon). 2011;26(3):229-237.
[20]Woldtvedt DJ, Womack W, Gadomski BC. Finite element lumbar spine facet contact parameter predictions are affected by the cartilage thickness distribution and initial joint gap size. J Biomech Eng. 2011;133(6):061009.
[21]Galbusera F, Schmidt H, Neidlinger-Wilke C, et al. The effect of degenerative morphological changes of the intervertebral disc on the lumbar spine biomechanics: a poroelastic finite element investigation. Comput Methods Biomech Biomed Engin. 2011;14(8):729-739.
[22]Jackson AR, Huang CY, Gu WY. Effect of endplate calcification and mechanical deformation on the distribution of glucose in intervertebral disc: a 3D finite element study. Comput Methods Biomech Biomed Engin. 2011;14(2):195-204.
[23]Kim HJ, Chun HJ, Kang KT, et al. A Validated finite element analysis of never root stress in degenerative lumbar scoliosis. Med Biol Eng Comput. 2009;47(6):559-605.
[24]Li XF, Liu ZD, Dai LY, et al. Dynamic response of the idiopathic scoliotic spine to axial cyclic loads. Spine (Phila Pa 1976). 2011;36(7):521-528.
[25]Dall'Ara E, Schmidt R, Pahr D, et al. A nonlinear finite element model validation study based on a novel experimental technique for inducing anterior wedge-shape fractures in human vertebral bodies in vitro. J Biomech. 2010;43(12):2374-2380.
[26]Zeinali A, Hashemi B, Akhlaghpoor S.Noninvasive prediction of vertebral body compressive strength using nonlinear finite element method and an image based technique.Phys Med. 2010;26(2):88-97.
[27]Park WM, Park YS, Kim K,et al.Biomechanical comparison of instrumentation techniques in treatment of thoracolumbar burst fractures:a finite element analysis. J Orthop Sci. 2009; 14(4):443-449.
[28]Mirzaei M, Zeinali A, Razmjoo A, et al.On prediction of the strength levels and failure patterns of human vertebrae using quantitative computed tomography (QCT)-based finite element method.J Biomech. 2009;42(11):1584-1591.
[29]Bottlang M, Helzel I, Long WB, et al. Anatomically contoured plates for fixation of rib fractures. J Trauma. 2010;68(3): 611-615.
[30]闫广辉,张庆胜,靳宪辉,等.经腰椎椎弓根动态内固定研究进展[J].生物骨科材料与临床研究,2012,9(6):31-34.

Three-dimensional finite element analysis on stress changes after rib-vertebral unit fixation for tuberculosis of thoracic spine (T₆_-8)

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