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反向全肩关节整形术与近端骨损失:部分与完全凝固的部茎的生物力学比较
Carlos Maturana1, Brandon Peterson2, Brendan Shi3
1Anatomical Engineering Group, Department of Mechanical and Aerospace Engineering, Henry Samueli School of Engineering, University of California, Los Angeles, CA, USA; David Geffen School of Medicine, University of California, Los Angeles, CA, USA.
Journal of shoulder and elbow surgery
|February 28, 2024
概括
在逆向全肩关节整形术中减少凝固,提供了足够的稳定性,同时简化了未来的去除. 这种技术在修复手术期间最大限度地降低了骨折风险,与大量使用水泥不同.
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
- 材料科学 材料科学 材料科学
背景情况:
- 对于带有骨损的逆转全肩关节整形术的最佳凝固技术尚不清楚.
- 广泛的凝固可以使修复手术复杂化,并增加周围假肢骨折的风险.
研究的目的:
- 为了比较使用标准与减少聚甲基甲酸 (PMMA) 凝固的手臂部件的沉降和扭矩耐受性.
- 评估是否减少固提供了足够的生物力学稳定性,用于逆向全肩关节整形术.
主要方法:
- 12个尸体部经历了5厘米的骨切除和标准或减少的PMMA凝固.
- 一个机器人系统在循环负荷下测试了组件沉降和移除扭矩到故障.
- 配对t试验比较了混凝土组之间的沉降和扭矩.
主要成果:
- 完全和部分凝固的植入物都显示沉降幅度明显低于5毫米.
- 与完全固的茎 (45.22Nm) 相比,部分固的茎需要明显更少的移除扭矩 (9.26Nm).
- 在拆除过程中,所有完全固的部骨折,而部分固组中只有一个骨折.
结论:
- 在逆向全肩关节整形术中减少凝固,提供了足够的生物力学稳定性.
- 部分凝固有助于更容易地去除组件,并降低了修复手术期间部骨折的风险.
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