软组织的动态反应可以在股骨干冲击过程中被忽视
Peter J Schlieker1, Frank Lampe2, Johann Zwirner3
1Hamburg University of Technology, Institute of Biomechanics, Denickestrasse 15, 21073 Hamburg, Germany.
Clinical biomechanics (Bristol, Avon)
|April 27, 2025
概括
在关节整形术 (THA) 期间,外科医生不会调整杆力. 短,高频的打击绕过患者特定的股骨机制,简化了干插入,无论重量.
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
- 医疗器械设计 医疗器械设计
背景情况:
- 整体关节整形术 (THA) 涉及使用子打击插入茎.
- 当前的外科手术技术不考虑患者的体重或个体的股骨机制.
- 这些因素对手术并发症的影响尚不清楚.
研究的目的:
- 在THA期间调查影响大腿骨组织系统机械行为的因素.
- 通过不同的手术方法分析茎插入的生物力学.
- 为了告知对外科冲击技术的潜在修改.
主要方法:
- 四具尸体使用侧向和直向前向方法进行双边THA.
- 一个质量弹阻尼器模型模拟了股骨组织系统的机械反应.
- 在手术方法之间对生物力学参数进行比较分析.
主要成果:
- 在横向和直接前方方法之间观察到质量弹阻尼器参数的显著差异.
- 侧向接近:16.5 公斤,29.7 N/mm,467.1 Ns/m.
- 直接前方接近:11.5 公斤,41.7 N/mm,553.0 Ns/m.
结论:
- 在THA中,短暂的,高频率的子冲击超过了股骨组织系统的自然频率.
- 这种快速的冲动会在骨明显移动之前引入茎,使患者特定的机制变得不那么关键.
- 这些发现支持不考虑当前冲击方法的个人大腿骨机制,并指导新工具或体外试验的开发.
相关概念视频
01:19Impact Loading
168
Impact loading occurs when a moving object collides with a stationary structure, such as a rod with a uniform cross-sectional area fixed at one end. Under these conditions, the rod absorbs the kinetic energy from the striking object, leading to deformation and subsequent stress development. As the rod returns to its original position and reaches maximum stress, the absorbed energy, initially manifested as kinetic energy, transforms entirely into strain energy.
In cases of elastic deformation,...
In cases of elastic deformation,...
168
01:16Bones of the Lower Limb: Femur and Patella
2.0K
The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the...
2.0K