Coflex-F与椎弓根螺钉固定联合经椎间孔腰椎椎间融合术（TLIF）或前路腰椎椎间融合术（ALIF）的生物力学差异——一项有限元研究
Biomechanical differences of Coflex-F and pedicle screw fixation combined with TLIF or ALIF--a finite element study.
作者信息
Lo Cheng-Chan, Tsai Kai-Jow, Zhong Zheng-Cheng, Chen Shih-Hao, Hung Chinghua
机构信息
Department of Mechanical Engineering, National Chiao Tung University, Hsinchu, Taiwan.
出版信息
Comput Methods Biomech Biomed Engin. 2011 Nov;14(11):947-56. doi: 10.1080/10255842.2010.501762. Epub 2011 May 24.
Lumbar interbody fusion is a common procedure for treating lower back pain related to degenerative disc diseases. The Coflex-F is a recently developed interspinous spacer, the makers of which claim that it can provide stabilisation similar to pedicle screw fixation. Therefore, this study compares the biomechanical behaviour of the Coflex-F device and pedicle screw fixation with transforaminal lumbar interbody fusion (TLIF) or anterior lumbar interbody fusion (ALIF) surgeries by using finite element analysis. The results show that the Coflex-F device combined with ALIF surgery can provide stability similar to the pedicle screw fixation combined with TLIF or ALIF surgery. Also, the posterior instrumentations (Coflex-F and pedicle screw fixation) combined with TLIF surgery had lower stability than when combined with ALIF surgery.
腰椎椎间融合术是治疗与椎间盘退变疾病相关的下背部疼痛的常见手术。Coflex-F是一种最近研发的棘突间撑开器，其制造商宣称它能提供与椎弓根螺钉固定相似的稳定性。因此，本研究通过有限元分析比较了Coflex-F装置和椎弓根螺钉固定联合经椎间孔腰椎椎间融合术（TLIF）或前路腰椎椎间融合术（ALIF）手术的生物力学行为。结果表明，Coflex-F装置联合ALIF手术能提供与椎弓根螺钉固定联合TLIF或ALIF手术相似的稳定性。此外，后路内固定（Coflex-F和椎弓根螺钉固定）联合TLIF手术时的稳定性低于联合ALIF手术时的稳定性。
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