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阻力是否表示错位? 一个标准化比较的脚螺丝安置位置
Sascha Kurz1,2, Benjamin Fischer1,2, Janine Schultze1,2
1ZESBO-Center for Research on Musculoskeletal Systems, Faculty of Medicine, Leipzig University, 04103 Leipzig, Germany.
Bioengineering (Basel, Switzerland)
|November 27, 2025
概括
在踏板螺杆放置期间对扭矩的监测不是错位的可靠指标. 这项研究没有发现正确和错位螺丝轨迹之间的扭矩有显著差异,这表明目前的方法不足以进行实时检测.
科学领域:
- 脊柱外科手术 脊柱外科手术
- 生物机械工程 生物机械工程
- 手术导航 手术导航
背景情况:
- 脚螺丝的错位是脊柱融合手术中常见的并发症,可能需要修改.
- 实时检测错位是可取的,以改善外科手术的结果.
- 在螺丝插入过程中分析机械阻力和扭矩已被提出作为一种潜在的检测方法.
研究的目的:
- 为了评估基于扭矩的机械电阻的可靠性,以实时检测脚螺丝错位.
- 为了在正确和错误的螺丝轨迹之间进行钻探,敲击和插入时比较扭矩值.
主要方法:
- 使用了五个新鲜冷的人类胸脊椎样本.
- 采用3D打印模板来创建正确的和四个定义的错位轨迹 (中间,侧面,上方,超侧面) 的偏移为2.0-3.5mm.
- 在恒定速度和料力下进行钻探,点击和插入,测量峰值扭矩.
主要成果:
- 在点击和插入阶段,在正确和错位轨迹之间没有观察到峰值扭矩的统计学上显著差异.
- 胸脊与腰脊的区域分析没有产生扭矩的显著差异.
- 只有在正确轨迹和超侧错位之间的钻井阶段才发现扭矩的统计学上显著差异 (p=0.038).
结论:
- 在标准化条件下,基于扭矩的机械阻力通常不是实时检测踏板螺丝错位的可靠指标.
- 可能需要进一步的研究来探索用于手术内错位检测的替代或精细方法.
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