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部拉布拉和囊修复无法恢复生物机械模型中的干扰稳定性
Alexander J Hoffer1, Stefan A St George1, Brent A Lanting1
1Department of Surgery, Western University, London, Ontario, Canada.
概括
关节镜术后的囊和部修复并没有恢复分心稳定性. 由于部手术后的潜在不稳定性,术后的预防措施至关重要.
科学领域:
- 整形外科手术 整形外科手术
- 生物机械工程 生物机械工程
- 关节透视术 关节透视术
背景情况:
- 关节镜检查通常涉及囊切除和腹腔修复.
- 在这些手术后评估关节的生物力学稳定性至关重要.
研究的目的:
- 为了评估部分心的稳定性,在囊切除,部撕裂,同时修复囊和部之后.
- 为了确定当前的修复技术是否能恢复原生关节的稳定性.
主要方法:
- 使用材料测试系统测试了十个人类尸体部.
- 在各种条件下测量了干扰力和破坏关节密封的距离:完好无损,囊切除,部撕裂和不同的修复状态.
- 测试是在多个部曲和旋转角度进行的.
主要成果:
- 与所有外科条件相比,完整的部囊和部需要显著更高的分心力来破坏密封.
- 单独的门际囊切除术 (IPC) 显著降低了分心阻力.
- 即使进行了腹和囊修复,也无法将分心阻力恢复到原生水平.
结论:
- 在关节镜检查时,完全的囊和骨修复可能不足以完全恢复关节的分心稳定性.
- 这些发现强调了早期术后预防措施的重要性,以管理关节镜术后潜在的不稳定性.
相关概念视频
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Rigid Body Equilibrium Problems - II
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero.
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
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In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:
In analyzing the system, the nodal equations represent the relationship between bus voltages, machine voltages, and machine currents. The nodal equation is given by:

