Chinese Journal of Tissue Engineering Research ›› 2026, Vol. 30 ›› Issue (27): 6985-6994.doi: 10.12307/2026.862
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Finite element analysis of biomechanical performance of a novel double-screw technique in lumbar revision of the original fixed segment
Zhang Le1, Julaiti·Maitirouzi1, Xie Xuechen1, Li Chunchao1, Wang Yixi2, Parhat·Rexiti2
- 1School of Intelligent Manufacturing and Modern Industry, Xinjiang University, Urumqi 830017, Xinjiang Uygur Autonomous Region, China; 2Department of Minimally Invasive Spine Surgery and Precision Orthopedics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
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Received:2025-10-15Accepted:2026-01-24Online:2026-09-28Published:2026-04-16 -
Contact:Julaiti·Maitirouzi, Associate professor, School of Intelligent Manufacturing and Modern Industry, Xinjiang University, Urumqi 830017, Xinjiang Uygur Autonomous Region, China -
About author:Zhang Le, MS candidate, School of Intelligent Manufacturing and Modern Industry, Xinjiang University, Urumqi 830017, Xinjiang Uygur Autonomous Region, China -
Supported by:"Tianshan Yingcai" High-Level Medical and Health Talent Training Plan Fund, No. TSYC202301B026 (to PR); Research on the Optimization of the Construction Model for the Research, Production and Education-Industry Integration Demonstration Base Jointly Established by the "Medical", "Engineering" and "Enterprise" Parties, No. JYGG2025003 (to PR)
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Zhang Le, Julaiti·Maitirouzi, Xie Xuechen, Li Chunchao, Wang Yixi, Parhat·Rexiti. Finite element analysis of biomechanical performance of a novel double-screw technique in lumbar revision of the original fixed segment[J]. Chinese Journal of Tissue Engineering Research, 2026, 30(27): 6985-6994.
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2.1 模型验证 将CT三维重建技术构建的腰椎模型，在人体真实椎体解剖结构与形态学方面进行对比验证，发现腰椎模型的还原性较高(图2A，B)。在生物力学验证方面，此次研究腰椎模型测得的活动范围与文献[30-33]报道的生理组及尸体实验的活动范围具有良好的一致性(图2C)，同时，模型在L3-4和L4-5水平椎间盘应力分布也与已有生理组研究数据差异不大[10，34-35](图2D，E)，在合理范围内。因此，基于上述解剖学和生物力学双重验证，此文认为腰椎模型可靠，可用于后续实验。 2.2 腰椎整体活动度 在前屈、后伸、侧弯、轴向旋转工况下，皮质骨轨迹翻修组活动范围相比对照组分别降低31.97%，29.15%，15.12%，29.63%，相较于传统轨迹松动组分别降低6.76%，3.09%，2.64%，3.32%，相较于传统轨迹初始组分别降低6.32%，2.10%，1.04%，0.34%。在同样的4种工况下，改良皮质骨轨迹翻修组活动范围相比对照组分别降低32.16%，29.33%，15.47%，31.42%，相较于传统轨迹松动组分别降低7.02%，3.33%，3.02%，5.78%，相较于传统轨迹初始组分别降低6.58%，2.35%，1.44%，2.88%，相较于皮质骨轨迹翻修组分别降低0.28%，0.25%，0.40%，2.54%。见表2。"
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2.3 上邻近节段椎间盘应力 在前屈、后伸、侧弯、轴向旋转工况下，皮质骨轨迹翻修组上邻近节段椎间盘应力相比对照组分别增加25.29%，17.13%，21.98%，27.08%，相较于传统轨迹松动组分别降低13.54%，15.00%，28.46%，25.80%，相较于传统轨迹初始组分别降低4.65%，12.37%，0.31%，23.32%。在同样的4种工况下，改良皮质骨轨迹翻修组上邻近节段椎间盘应力相比对照组分别增加25.16%，7.23%，21.23%，22.30%，相较于传统轨迹松动组分别降低13.63%，22.18%，28.91%，28.59%，相较于传统轨迹初始组分别降低4.74%，19.78%，0.93%，26.21%，相较于皮质骨轨迹翻修组分别降低0.10%，8.46%，0.62%，3.76%。见表3、图 3。 2.4 固定节段椎间盘应力 在前屈、后伸、侧弯、轴向旋转工况下，皮质骨轨迹翻修组固定节段椎间盘应力相比对照组分别降低15.44%，78.67%，54.36%，40.55%，相较于传统轨迹松动组分别降低23.36%，27.12%，39.64%，52.23%。皮质骨轨迹翻修组固定节段椎间盘应力相比传统轨迹初始组，在前屈、后伸、侧弯工况下分别增加3.11%，35.74%，35.51%，在轴向旋转工况下降低19.79%。在同样的4种工况下，改良皮质骨轨迹翻修组固定节段椎间盘应力相比对照组分别降低16.25%，83.00%，64.82%，45.83%，相较于传统轨迹松动组分别降低24.09%、41.88%，53.47%，56.47%。改良皮质骨轨迹置钉翻修组固定节段椎间盘应力相比传统轨迹初始组，在前屈、后伸、侧弯工况下分别增加2.13%，8.25%，4.47%，在轴向旋转工况下降低26.91%。在前屈、后伸、侧弯、轴向旋转工况下，改良皮质骨轨迹翻修组固定节段椎间盘应力相比皮质骨轨迹翻修组分别降低0.96%，20.25%，22.91%，8.88%。见表4、图4。"
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2.5 固定节段椎体应力 在前屈、后伸、侧弯、轴向旋转工况下，皮质骨轨迹翻修组固定节段椎体应力相比传统轨迹初始组分别降低7.02%，14.84%，7.04%，4.90%，相较于传统轨迹松动组分别降低8.28%，16.71%，56.00%，31.45%。在同样的4种工况下，改良皮质骨轨迹翻修组固定节段椎体应力相比传统轨迹初始组分别降低21.69%，18.89%，17.47%，11.95%，相较于传统轨迹松动组分别降低22.75%，20.67%，60.92%，36.55%，相较于皮质骨轨迹翻修组分别降低15.78%，4.75%，11.22%，7.42%。见表5、图5。 2.6 钉棒内固定系统应力 在前屈、后伸、侧弯、轴向旋转工况下，皮质骨轨迹翻修组钉棒内固定系统应力相比传统轨迹初始组分别降低38.18%，1.09%，14.81%，38.09%，相较于传统轨迹松动组：分别降低56.15%，5.14%，41.32%，38.17%。在同样的4种工况下，改良皮质骨轨迹翻修组钉棒内固定系统应力相比传统轨迹初始组分别降低38.27%，10.77%，15.72%，38.61%，相较于传统轨迹松动组分别降低56.21%，14.43%，41.94%，38.67%，相较于皮质骨轨迹翻修组分别降低0.15%，9.80%，1.04%，0.84%。见表6、图6。"
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