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骨密度优化的脚螺丝插入螺丝插入.

Christos Tsagkaris1, Anna-Katharina Calek1,2, Marie-Rosa Fasser2,3

  • 1Department of Orthopedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.

Frontiers in bioengineering and biotechnology
|November 13, 2023
PubMed
概括
此摘要是机器生成的。

优化脚螺丝轨迹可以提高高骨弹性模块 (E模块) 的脊椎的拉出强度. 这种方法可能不有利于具有较低E模块的脊椎,可能是由于螺丝长度减少.

关键词:
脚架螺丝螺丝螺丝螺丝脊柱 脊柱 脊柱 脊柱 脊柱脊柱生物力学 脊柱生物力学进行外科手术的计划.飞行轨道的轨迹是什么

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科学领域:

  • 整形外科手术 整形外科手术
  • 生物机械工程 生物机械工程
  • 脊柱融合技术 脊柱融合技术

背景情况:

  • 退行性脊髓疾病通常用脊髓融合来治疗.
  • 螺丝松动是常见的并发症,导致伪关节炎和修复手术.
  • 优化脚螺丝轨迹可以提高植入物对机械负荷的抵抗力.

研究的目的:

  • 为了生物力学验证一个优化算法为脚螺丝放置.
  • 量化优化螺丝轨迹对拉出强度的影响.
  • 为了在尸体样本中比较优化与传统螺丝轨迹的拉出强度.

主要方法:

  • 在一项尸体研究中,使用了25个腰椎.
  • 用传统和优化的轨迹在相反侧面插入脚螺丝.
  • 对每个螺丝类型的拉出强度和拉伸能量进行了测量.

主要成果:

  • 优化的轨迹仅在具有E模块>3500 MPa cm3的脊椎中显示出更好的拉出强度和应变能量.
  • 在E模块值≤3500 MPa cm3的情况下没有观察到显著的益处.
  • 优化的脚螺丝比传统插入螺丝要短得多 (p < 0.001).

结论:

  • 脚螺杆轨迹的优化是可行的,但主要有利于具有非常高E模块的脊椎.
  • 在优化的轨迹中减少螺丝长度可能会减少植入物-骨接口,从而限制稳定性.
  • 未来的优化模型应该将螺丝长度作为预测稳定性的关键因素.