[颈椎前路融合术对邻近节段的影响:有限元分析]。

PubMed ID
G H
发表日期 2017年Jan月

原始出处 南方医科大学学报
Nan fang yi ke da xue xue bao = Journal of Southern Medical University
作者 Lu  Teng  Zhang  Ting  Dong  Jun  Zang  Quan-Jin  Yang  Bao-Hui  Wang  Dong  Li  Hao-Peng  He  Xi-Jng 

文献标题 [颈椎前路融合术对邻近节段的影响:有限元分析]。
[Impact of anterior cervical fusion surgeries on adjacent segments: a finite element analysis].
[Impact of anterior cervical fusion surgeries on adjacent segments: a finite element analysis].

文献摘要 OBJECTIVE

应用有限元分析方法,探讨颈椎前路椎体切除融合术(ACCF)和颈椎前路椎间盘切除融合术(ACDF)后相邻节段椎间盘和小关节活动范围(ROM)和应力的变化。

METHODS

建立了下颈椎的三维有限元模型,并将有限元模型的ROM与已发表的数据进行了比较。在模型成功验证后,建立了ACDF和ACCF的有限元模型。比较ACDF和acf后完整下颈椎与颈椎相邻节段椎间盘和小关节的ROM和应力。

RESULTS

有限元模型的ROM与公布的数据一致。与完整颈椎相比,ACDF和ACCF融合节段的总ROM和ROM明显降低。ACDF和ACCF后相邻节段的ROM及椎间盘、小关节的应力峰值均较正常颈椎明显增加。

CONCLUSION

颈椎融合术后,颈椎总活动度降低,相邻节段活动度增加。相邻节段椎间盘和小关节的应力峰值也增加,从而显著改变完整颈椎的生理特性。


OBJECTIVE

To investigate the changes in the range of motion (ROM) and stress of the intervertebral disc and facet joint of the adjacent segments following anterior cervical corpectomy and fusion (ACCF) and anterior cervical discectomy and fusion (ACDF) using finite element analysis.

METHODS

A three-dimensional finite element model of the lower cervical vertebrae was constructed and validated by comparing the ROM of the finite element model against the published data. After the validation of successful modeling, finite element models of ACDF and ACCF were constructed. The ROM and the stress of the intervertebral disc and facet joint of the adjacent segments were compared between the intact lower cervical vertebrae and the cervical vertebrae after ACDF and ACCF.

RESULTS

The ROM of the finite element model was consistent with the published data. The total ROM and the ROM of the fusion segments with ACDF and ACCF were significantly decreased compared with the intact cervical vertebrae. In the adjacent segments following ACDF and ACCF, the ROM the adjacent segments and the stress peak of the intervertebral disc and facet joint all increased obviously compared with those of intact cervical vertebrae.

CONCLUSION

After fusion surgeries, the total ROM of the cervical vertebrae decreases and the ROM of the adjacent segment increases. The stress peak of the intervertebral disc and facet joint of the adjacent segments also increases to significantly alter the physiological characteristics of the intact cervical vertebrae.

OBJECTIVE

To investigate the changes in the range of motion (ROM) and stress of the intervertebral disc and facet joint of the adjacent segments following anterior cervical corpectomy and fusion (ACCF) and anterior cervical discectomy and fusion (ACDF) using finite element analysis.

METHODS

A three-dimensional finite element model of the lower cervical vertebrae was constructed and validated by comparing the ROM of the finite element model against the published data. After the validation of successful modeling, finite element models of ACDF and ACCF were constructed. The ROM and the stress of the intervertebral disc and facet joint of the adjacent segments were compared between the intact lower cervical vertebrae and the cervical vertebrae after ACDF and ACCF.

RESULTS

The ROM of the finite element model was consistent with the published data. The total ROM and the ROM of the fusion segments with ACDF and ACCF were significantly decreased compared with the intact cervical vertebrae. In the adjacent segments following ACDF and ACCF, the ROM the adjacent segments and the stress peak of the intervertebral disc and facet joint all increased obviously compared with those of intact cervical vertebrae.

CONCLUSION

After fusion surgeries, the total ROM of the cervical vertebrae decreases and the ROM of the adjacent segment increases. The stress peak of the intervertebral disc and facet joint of the adjacent segments also increases to significantly alter the physiological characteristics of the intact cervical vertebrae.


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