颈椎前路分节段减压融合术三维有限元研究
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摘要
目的:应用三维有限元模型分析颈椎前路分节段减压融合术的生物力学特点。方法:根据薄层CT扫描图片(层距0.625mm)建立颈2～7三维有限元模型,分别模拟分节段减压融合术和单纯椎体次全切除术建立手术模型,在载荷下计算每个模型在前屈、后伸、侧屈、旋转工况下颈椎活动范围(ROM)和邻近节段椎间盘应力。结果:建立的颈椎三维有限元模型有效,分节段减压融合术比单纯椎体次全切除术对邻近节段椎间盘应力影响小,二者对颈椎活动范围影响相同。结论:颈椎前路分节段减压融合术比单纯椎体次全切除术更符合人体生物力学要求。
Objective: To evaluate the biomechanics of segmental anterior cervical decompression with fusion on multilevel cervical myelopathy. Method: On the base of finite element model from C2 to C7, we developed five different models to compare adjacent disc stress and range of motion (ROM) according to the clinical fact. Result: The adjacent disc stress with segmental decompression was lower than traditional operation and the ROM is near the same. Conclusion : The biomechanics of segmental anterior cervical decompression with fusion is better than traditional corpectomy.
Objective: To evaluate the biomechanics of segmental anterior cervical decompression with fusion on multilevel cervical myelopathy. Method: On the base of finite element model from C2 to C7, we developed five different models to compare adjacent disc stress and range of motion (ROM) according to the clinical fact. Result: The adjacent disc stress with segmental decompression was lower than traditional operation and the ROM is near the same. Conclusion : The biomechanics of segmental anterior cervical decompression with fusion is better than traditional corpectomy.
引文
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