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三重周期性最小表面结构的高级拓学,用于骨质改善在骨科金属螺丝内

Wangwang Luo¹, Yang Wang¹, Zhonghan Wang^1,2

¹Department of Orthopedics, The Second Hospital of Jilin University, Changchun, China.

Materials today. Bio

|July 8, 2024

概括

使用增材制造的新型多孔螺丝设计可以减少应力屏蔽并改善骨整合. 这些骨科植入物通过促进骨再生和优化螺杆骨接触来增强长期固定.

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
增材制造增材制造增材制造

背景情况:

固体金属螺丝是标准的骨科植入物,但可以导致应力屏蔽和松.
这些问题影响了长期的螺丝固定和患者的治疗结果.

研究的目的:

为了研究四种增材制造多孔结构在骨科螺丝的有效性.
为了增强螺旋骨集成和减少应力屏蔽.

主要方法:

将四种不同的多孔结构 (菲舍尔-科赫S,八度,钻石,双回旋) 纳入螺丝设计中.
分析弹性模量和骨再生潜力的变化.

主要成果:

多孔结构将螺丝弹性模量降低了2-15倍,减轻了应力屏蔽.
螺丝表面的骨再生增加了1-50倍,促进了骨质生成.
增强骨进入多孔螺丝内部的增强,改善了固定刚性.

结论:

增材制造的多孔结构提供了一个可行的解决方案,用于压力屏蔽和松在骨科螺丝.
这些优化的螺丝设计通过增强骨整合显著改善了长期固定.
该研究为骨科固定装置提供了先进的拓优化策略.

关键词:

骨头骨头骨头骨头整形外科植入物是一种植入物.孔隙结构孔隙结构再生再生再生的过程

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Spongy Bone

Spongy Bone

All bones comprise an outer layer of compact bone, and an interior made up of spongy bone tissue, also called cancellous or trabecular bone. In long bones, spongy bone tissue is mainly found in the interior of the epiphyses (broad ends of the bone).
Spongy bone is more porous, and less dense compared to compact bone. It is composed of concentric lamellae that are arranged irregularly to form the trabecular network. In some bones, the spaces between trabeculae contain red marrow, where...