在增强现实辅助全膝关节整形术中,针对带边界而不是对齐边界,可以确保手术和对侧肢之间具有可比的步态模式
Michael Engl1,2,3, Fjorela Qordja4,5, Guido Bocchino5,6
1Department Orthopaedic Surgery, Südtiroler Sanitätsbetrieb, Brixen, 39042, Italy.
概括
增强现实辅助全膝关节整形 (TKA) 专注于软组织平衡,而不仅仅是对齐. 这种方法可以保持自然的膝盖动力学,在个性化膝盖置换手术中显示出有希望的结果.
科学领域:
- 整形外科手术 整形外科手术
- 生物力学 生物力学
- 生物医学工程 生物医学工程
背景情况:
- 现代的全膝关节整形术 (TKA) 旨在通过优先考虑软组织动态而不是静态对齐来复制自然的膝关节运动.
- 在TKA中最优的带平衡仍然被不一致地定义,强调需要改进手术内评估和术后评估.
- 使用增强现实 (AR) 的个性化TKA技术为实时,个性化的带管理提供了潜力.
研究的目的:
- 在AR辅助的TKA期间评估手术内附带带张力和中间/侧面隔间平衡.
- 评估手术后的步态参数,并将其与对侧肢进行比较.
- 为了确定实现的间隔平衡对最终的冠状线对齐 (部-膝盖-脚角) 的影响.
主要方法:
- 一项针对17名接受初级AR辅助TKA治疗膝关节骨关节炎的患者的前性研究.
- 在手术期间测量中侧侧带 (MCL) 和侧侧侧带 (LCL) 在运动范围内的延伸.
- 在9个多个月后进行冠状元对齐 (HKA) 的术后放射性评估和3D无标记步态分析.
主要成果:
- MCL表现出近同位数的行为,而LCL表现出渐进的解压,导致侧开放和不对称的软组织平衡.
- 这种形软组织配置在术后持续存在.
- 在手术肢体和逆侧肢体之间没有观察到 significant 的步态参数差异 (p > 0.05). 在手术后的HKA和早期曲角度的带不对称性之间发现了负相关性.
结论:
- 专注于动态软组织平衡,而不是静态对齐,可能有助于在TKA后保持膝盖运动.
- 增强现实辅助平衡技术提供实时,个性化的带管理,与本地膝关节动力学保持一致.
- 需要对更大的队列和各种技术进行进一步的研究,以验证膝关节关节整形术中的这些发现.
相关概念视频
Areas Within Irregular Boundaries
377
Calculating areas within irregular boundaries, such as along rivers or curved roads, is crucial in various fields, including surveying, engineering, and environmental management. Surveyors often begin by creating a traverse, a connected series of straight lines approximating the area's boundary. The coordinates of each traverse point are essential for calculating the enclosed area. The double meridian distance formula is a widely used technique for this purpose. This method utilizes the...
377
Electrostatic Boundary Conditions
954
Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
954
Magnetostatic Boundary Conditions
1.7K
An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
1.7K
Boundary Layer Characteristics
606
When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...
606
Boundary Conditions for Current Density
1.3K
Current density becomes discontinuous across an interface of materials with different electrical conductivities. The normal component of the current density is continuous across the boundary.
1.3K
Boundary Conditions: Lossless Lines
436
Consider a single-phase, two-wire, lossless transmission line terminated by an impedance at the receiving end and a source with Thevenin voltage and impedance at the sending end. The line, with length, has a surge impedance and wave velocity determined by the line's inductance and capacitance.
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
436


