Comparison of the effects of different artificial discs on hybrid surgery: A finite element analysis.

IF 1.7 4区 医学 Q3 ENGINEERING, BIOMEDICAL
Wei Jiang, Fulin Zhao, Waseem Ur Rahman, Tianxiang Dong, Guanghui Yang
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引用次数: 0

Abstract

In recent years, artificial cervical discs have been used in intervertebral disc replacement surgery and hybrid surgery (HS). The advantages and disadvantages of different artificial cervical discs in artificial cervical disc replacement surgery have been compared. However, few scholars have studied the biomechanical effects of various artificial disc prostheses on the human cervical spine in HS which include the Anterior Cervical Discectomy and Fusion (ACDF) and Cervical Disc Arthroplasty (CDA). This study compared the biomechanical behavior of Mobi-C and Prestige LP in the operative and adjacent segments during two-level hybrid surgery. A three-dimensional finite element model of C2-C7 was first established and validated. Subsequently, clinical surgery was then simulated to establish a surgical model of anterior cervical fusion at the C4-C5 level. Mobi-C and Prestige-LP artificial disc prostheses were implanted at the C5-C6 level to create two hybrid models. All finite element models were fixed on the lower endplate of the C7 vertebra and subjected to a load of 73.6 N and different directions of 1 Nm torque on the odontoid process of the C2 vertebra to simulate human flexion, extension, lateral bending, and axial rotation. This paper compares the ROM, intervertebral pressure, and facet joint force after hybrid surgery with the intact model. The results show that compared with Prestige LP, Mobi-C can improve ROM of the replacement segment and compensate for the intervertebral pressure of the adjacent segment more effectively, but the facet joint pressure of the replacement segment may be higher.

比较不同人工椎间盘对混合手术的影响:有限元分析
近年来,人工颈椎间盘已被用于椎间盘置换手术和混合手术(HS)。不同人工颈椎间盘在人工颈椎间盘置换手术中的优缺点已被比较。然而,很少有学者研究过各种人工椎间盘假体在 HS 中对人体颈椎的生物力学影响,其中包括前路颈椎椎间盘切除融合术(ACDF)和颈椎间盘关节成形术(CDA)。本研究比较了两级混合手术中 Mobi-C 和 Prestige LP 在手术节段和邻近节段的生物力学行为。首先建立并验证了 C2-C7 的三维有限元模型。随后,模拟临床手术,建立了 C4-C5 水平颈椎前路融合术的手术模型。在 C5-C6 水平植入 Mobi-C 和 Prestige-LP 人工椎间盘假体,建立了两个混合模型。所有有限元模型均固定在 C7 椎体的下终板上,并承受 73.6 N 的载荷和 C2 椎体钝突上不同方向的 1 Nm 扭矩,以模拟人体的屈曲、伸展、侧弯和轴向旋转。本文比较了混合手术后的 ROM、椎间压和面关节力。结果表明,与 Prestige LP 相比,Mobi-C 能更有效地改善置换节段的 ROM 并补偿相邻节段的椎间压力,但置换节段的面关节压力可能更高。
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来源期刊
CiteScore
3.60
自引率
5.60%
发文量
122
审稿时长
6 months
期刊介绍: The Journal of Engineering in Medicine is an interdisciplinary journal encompassing all aspects of engineering in medicine. The Journal is a vital tool for maintaining an understanding of the newest techniques and research in medical engineering.
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