Influence of the Moving Fluoroscope on Gait Patterns

摘要: Video-fluoroscopic analysis can provide important insights for the evaluation of outcome and functionality after total knee arthroplasty, allowing in vivo assessment tibiofemoral kinematics without soft tissue artefacts. To enable measurement throughout activities daily living such as gait, robotic systems like moving fluoroscope have been developed that follow movement maintain joint front image intensifier. Since it is unclear whether walking while being accompanied by affects normal objective this study was to investigate its influence on gait characteristics healthy subjects. In addition, impact motors' noise analysed. By means skin markers (VICON MX system, Oxford Metrics Group, UK) simultaneous ground reaction forces (Kistler force plates, Kistler, Switzerland), when with well ear protectors combination fluoroscope, were obtained young (n = 10, 24.5y ± 3.0y) elderly 9, 61.6y 5.3y) subjects during level stair descent. Walking significantly decreased velocity descent over respective fluoroscope. Statistical analysis, including a covariate, resulted no differences parameters. However, some kinematic parameters (ankle, hip ranges motion, minimal angle late stance phase, maximal angles swing phase) seemed be modified presence but statistical comparison limited due between conditions. Wearing avoid motor sound caused significant difference. has shown decrease small alterations observed. Therefore, cannot completely excluded. based absence (when adjusted within ANCOVA), comparable shape angular curves slow control condition, concluded changes are small, especially natural walking. order allow replacement an understanding effects pain, clinical analyses only compared showing similarly reduced velocities. Importantly, speeds observed similar those suggesting appropriate. would likely need optimized detect at higher velocities The applied comparisons groups measured care should taken comparing data self-selected speed