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一个3D打印的tibiotalocalcaneal指甲的生物力学设计考虑,用于脚关节融合

Kin Weng Wong^1,2, Shao-Fu Huang^3,4, Skye Hsin-Hsien Yeh^5,6

¹Department of Biomedical Engineering, College of Engineering, National Cheng Kung University, Tainan, Taiwan.

3D printing in medicine

|May 9, 2025

概括

这项研究引入了新的3D打印的内指甲,用于骨 (TTC) 关节切除,增强骨整合. 虽然格子设计促进骨生长,但加强肋骨对于TTC指甲应用中的机械稳定性至关重要.

科学领域:

整形外科手术整形外科手术
生物材料工程是生物材料的工程.
增材制造增材制造是一种增材制造.

背景情况:

使用骨髓内指甲进行的TTC关节损伤通常会导致骨整合和机械稳定性不佳.
当前的钉子设计在促进生物固定和实现适当的压缩方面存在局限性.

研究的目的:

开发和评估一种新的3D打印的长TTC内螺钉,其内嵌钻石格子结构和差分线程.
增强生物固定和机械压缩,以改善TTC关节切除结果.

主要方法:

制造了四个3D打印的TTC指甲设计 (固体,格子,带纵横肋的格子,带纵横肋的格子).
机械强度通过四点曲试验 (ASTM F1264) 进行评估.
对六头猪进行了TTC关节切除,结果使用X光和12周微型CT进行了评估.

主要成果:

所有3D打印的指甲都显示出高精度. 断裂强度各不相同,固体钉最强,仅有格子钉最弱.
不同线程设计实现了高压缩比 (81-82.5%).
格子设计 (TTC 2和TTC 4) 与固体设计 (TTC 1) 相比,显著增加了骨的形成. 与破裂的TTC 2不同,TTC 4保持了结构完整性,同时促进了骨生长.

结论:

3D打印对于制造具有表面格子设计的长TTC内指甲是可行的.
表面格子结构增强了TTC关节切除中的骨整合.
加强肋骨是必要的,以确保3D打印的TTC内髓钉具有格子设计的足够的机械强度.

关键词:

通过3D打印打印3D打印.四点曲曲的方法内指甲的指甲.格子格子是一个格子格子.脊椎形形关节病变的治疗方法

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