可变形用于骨修复手术:一个概念验证
J Magré1,2, K Willemsen3,4, H M A Kolken5
1Department of Orthopedics, University Medical Center Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands. j.magre-2@umcutrecht.nl.
3D printing in medicine
|June 9, 2023
概括
对于三边形体植入物的新型可变形多孔概念有效地减少了修复手术中的应力屏蔽. 这种设计增强了模拟骨缺陷中的初级稳定性和固定性.
科学领域:
- 生物材料工程 生物材料工程
- 整形外科手术 整形外科手术
- 医疗器械设计 医疗器械设计
背景情况:
- 定制的三边形骨干植入物对于具有骨库损害的复杂修复手术至关重要.
- 现有的三边形杯经常导致压力屏蔽,阻碍长期植入成功.
- 需要一种新的方法来减轻应力屏蔽和改善植入物集成.
研究的目的:
- 引入和评估一种使用可变形多孔的新型三边形体植入物概念.
- 评估使用这种新概念设计的植入物的可变性和初级稳定性.
- 通过将力转向底层骨库来减少应力屏蔽.
主要方法:
- 在压缩下机械测试了三种高度多孔的气设计.
- 最优的设计被纳入了带有集成可变形层或单独的网格的乙状骨植入物.
- 植入物被测试在有骨缺陷的骨中,经过循环压缩 (1800N1000次循环).
主要成果:
- 带有4毫米细胞大小和0.2毫米支架厚度的多孔设计显示出优越的机械性能.
- 嵌入可变形层的植入物可以实现立即的初级固定.
- 循环测试显示,在最初的1000个循环中,平均沉降量为0.25mm,随后沉降量最小.
结论:
- 在模拟复杂的acetabular修复手术中,在acetabular杯后面集成的可变形层可以实现初级固定和稳定.
- 这种创新的设计显示出减少在具有挑战性的骨科病例中减轻压力屏蔽的希望.
- 为了使这些先进的植入物得到广泛采用,需要进一步的临床研究.
关键词:
通过3D打印打印3D打印.乙肌体杯子 (acetabular cup) 是一种肌体杯子.生物力学 生物力学可变形的可以变形.植入物固定的固定方式植入物修复检查 植入物修复检查重建重建的重建工作更多相关视频
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