在复杂的创伤后关节炎中,使用针对患者的全膝关节置换手术指南而无需切除硬件的效果:一个体外研究
Chi-Pin Hsu1,2, Chun-Chieh Chen3,4,5, Yi-Sheng Chan6,7
1Department of Mechanical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan.
Biomedical engineering online
|February 3, 2026
概括
患者特定指南 (PSG) 允许准确的创伤后膝关节置换 (PTKR),即使保留了硬件. 这种3D打印技术比传统方法提高了对齐精度,提高了手术效率.
科学领域:
- 整形外科手术 整形外科手术
- 生物医学工程 生物医学工程
- 医疗成像医学成像
背景情况:
- 创伤后膝关节置换 (PTKR) 通常涉及保留的硬件,使对齐变得复杂.
- 传统的肌内导体受到硬件的限制,需要具有潜在精度和辐射缺点的肌外导体.
- 患者专用指南 (PSG) 为复杂的手术场景提供了3D打印的替代方案.
研究的目的:
- 在创伤后膝关节置换 (PTKR) 模型中评估患者特定指南 (PSG) 的准确性.
- 为了比较PSG准确度在膝盖模型与没有保留的金属硬件.
- 评估使用PSG进行PTKR而不需要硬件移除的可行性.
主要方法:
- 3D打印的膝盖模型是从关节炎膝盖的CT扫描中创建的.
- 添加了金属硬件 (板,螺丝) 来复制创伤后的配置.
- 使用PSG进行了体外切除,随后进行CT分析以量化精度.
主要成果:
- 带有硬件的膝盖模型显示出明显更大的形状偏差.
- 硬件模型中的PSG定位错误略高 (0.68毫米,2.83°) 与非硬件模型 (0.55毫米,1.32°) 相比.
- 与非硬件幻象相比,硬件幻象 (2.4°-3.1°) 的切割角度误差更高.
结论:
- 患者特定指南 (PSG) 允许在不需要移除硬件的情况下准确的PTKR.
- 尽管由于硬件而导致可量化的精度降低,但PSG提供了卓越的对齐精度.
- 在复杂的PTKR案例中,PSG可以提高工作流的效率.
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