茎的长度是否会影响近端部的应力屏蔽? 一个系统的审查
Maxwell Harrell1, Dev Dayal1, Clay Rahaman1
1University of Alabama at Birmingham, Department of Orthopaedic Surgery, Birmingham, AL, USA.
Journal of orthopaedics
|October 10, 2025
概括
短茎 (SS) 膀假肢可能会改变骨改造,与传统长茎 (TL) 不同,可能保留近端骨,但增加远端变化. 由于独特的应力屏蔽模式,建议对SS茎进行仔细的患者选择.
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
- 放射学 放射学是一门学科.
背景情况:
- 全肩关节整形术 (TSA) 的使用正在增加,导致修复手术的增加.
- 麻醉放松,通常是由应力屏蔽和近端骨骨解造成的,是TSA修订的关键原因.
- 应力屏蔽发生在假肢周围负载分布变化导致骨损失时.
研究的目的:
- 系统地审查和比较传统长度 (TL) 和短茎 (SS) 肋骨假肢之间的应力屏蔽.
- 假设SS茎与TL茎相比,减少应力屏蔽.
- 分析放射结果和与不同茎长度相关的骨改造模式.
主要方法:
- 在Cochrane,Embase和Medline数据库中进行了系统的文献搜索.
- 包括的研究报告了过去10年的TL和SS茎的放射性结果.
- 放射测量,包括皮层稀疏,骨质疏松,凝结线和点,在5区近腰部模型中进行了分析.
主要成果:
- 分析了7项涉及620名患者 (422名SS,198名TL) 的研究,平均随访时间为34.8个月.
- 在TL茎中,在上侧和中侧区域,皮层稀疏和骨质疏松 (CNO) 和点 (SW) 的比率更高.
- SS茎在下侧和中侧区域呈现较高的CNO,在远侧和中侧区域呈现较高的SW;观察到对远侧CNO具有显著的茎长效应.
结论:
- 放射性差异表明SS和TL茎之间有明显的骨重塑模式.
- SS茎可能提供更好的近接侧侧骨保存,但由于偏远皮层变化增加,需要仔细考虑.
- 在需要甲基细胞固定或骨质量令人担忧的情况下,TL茎可能是可取的.
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