三节段颈椎退行性变椎间盘病变的合理混合手术策略:有限元分析。

PubMed ID
G H
发表日期 2019年Dec月

原始出处 骨科外科与研究杂志
Journal of orthopaedic surgery and research
作者 Xie  Y M  Zheng  Y C  Qiu  S J  Gong  K Q  Duan  Y 

文献标题 三节段颈椎退行性变椎间盘病变的合理混合手术策略:有限元分析。
The appropriate hybrid surgical strategy in three-level cervical degenerative disc disease: a finite element analysis.
The appropriate hybrid surgical strategy in three-level cervical degenerative disc disease: a finite element analysis.

文献摘要 OBJECTIVE

本研究旨在分析不同HS策略在三级CDDD(一级CDA和两级ACDF)治疗中的生物力学特性。

METHODS

我们通过将三维CT扫描收集的数据传输到有限元软件ABAQUS,并将这些数据与已发表研究的数据进行比较,验证了所建立的完整颈椎的有限元模型。然后,重建混合手术的有限元模型,分析超高分子量聚乙烯(UHMWPE)核的运动范围、关节突关节力和应力分布。

RESULTS

目前的颈椎有限元模型能够在后续的混合手术模拟中测量生物力学变化。颈椎HS模型的总活动度较完整组明显降低,M2(C3/4acdf,C4/5cda,C5/6acdf)模型的总ROM最接近完整组,但治疗水平附近的关节突关节力差异不大。应力分布表现出明显的相似性:中心核有两个侧面,但M2嵌体更为脆弱。

CONCLUSIONS

通过对关节活动度(ROM)、CDA后关节突关节力和假体应力分布的比较,发现M2模型具有较好的理论效果,特别是在保持最大总ROM方面。


OBJECTIVE

The purpose of this FE study was to analyze the biomechanical characteristics of different HS strategies used in the treatment of three-level CDDD (one-level CDA and two-level ACDF).

METHODS

We validated the FE model of an intact cervical spine established by transferring the data, collected by 3D CT scan, to the FE software ABAQUS and comparing these data with the data from published studies. Then, the FE model of hybrid surgery was reconstructed to analyze the range of motion (ROM), facet joint force, and stress distribution on an ultrahigh molecular weight polyethylene (UHMWPE) core.

RESULTS

The current cervical FE model was able to measure the biomechanical changes in a follow-up hybrid surgery simulation. The total ROM of the cervical HS models was substantially decreased compared with the total ROM of the intact group, and the M2 (C3/4 ACDF, C4/5 CDA, and C5/6 ACDF) model had the closest total ROM to the intact group, but the facet joint force adjacent to the treatment levels showed very little difference among them. The stress distribution showed noticeable similarity: two flanks were observed in the center core, but the inlay of M2 was more vulnerable.

CONCLUSIONS

Through the comparison of ROM, the facet joint force after CDA, and the stress distribution of the prosthesis, we find that M2 model has a better theoretical outcome, especially in preserving the maximum total ROM.

OBJECTIVE

The purpose of this FE study was to analyze the biomechanical characteristics of different HS strategies used in the treatment of three-level CDDD (one-level CDA and two-level ACDF).

METHODS

We validated the FE model of an intact cervical spine established by transferring the data, collected by 3D CT scan, to the FE software ABAQUS and comparing these data with the data from published studies. Then, the FE model of hybrid surgery was reconstructed to analyze the range of motion (ROM), facet joint force, and stress distribution on an ultrahigh molecular weight polyethylene (UHMWPE) core.

RESULTS

The current cervical FE model was able to measure the biomechanical changes in a follow-up hybrid surgery simulation. The total ROM of the cervical HS models was substantially decreased compared with the total ROM of the intact group, and the M2 (C3/4 ACDF, C4/5 CDA, and C5/6 ACDF) model had the closest total ROM to the intact group, but the facet joint force adjacent to the treatment levels showed very little difference among them. The stress distribution showed noticeable similarity: two flanks were observed in the center core, but the inlay of M2 was more vulnerable.

CONCLUSIONS

Through the comparison of ROM, the facet joint force after CDA, and the stress distribution of the prosthesis, we find that M2 model has a better theoretical outcome, especially in preserving the maximum total ROM.


获取全文 10.1186/s13018-019-1502-5