School of Biomedical Engineering, London, ON, Canada.
Roth|McFarlane Hand and Upper Limb Center, St. Joseph's Hospital, London, ON, Canada; Department of Physical Therapy, The University of Western Ontario, London, ON, Canada.
J Hand Ther. 2020 Apr-Jun;33(2):188-197. doi: 10.1016/j.jht.2020.04.002. Epub 2020 May 21.
Measuring finger forces during activities of daily living and how these forces change for individuals with pathologies such as arthritis is valuable to our understanding of hand function.
The purpose of this study was to determine the forces of individual fingers during the performance of daily activities in healthy participants and determine the envelope of these applied forces.
This is a cross-sectional study investigating twenty-five healthy participants (12 female: 22-65 years old and 13 male: 20-53 years old) and participants with osteoarthritis (12 female: 52-79 years old and 9 male: 64-79 years old) examined at one time point. The force sensors were calibrated for each individual using a load cell to provide force output in Newtons. Each participant performed 19 activities of daily living two times. Force was plotted over time for each task, and the maximum force in each finger during that task was evaluated.
The range of applied forces was 1.4 ± 0.6 N to 34.8 ± 1.6 N for healthy participants and 2.3 ± 1.0 N to 30.7 ± 3.7 N for those with osteoarthritis.
Sensors allowed for real-time monitoring of finger forces during tasks of daily life. This provides the opportunity to isolate hand grips based on finger recruitment and provide information about the magnitude of forces during the activity.
Measurement of individual finger forces can provide more accurate biomechanical models of the hand and determine the effect of disease on hand functions.
测量日常生活活动中的手指力，以及关节炎等病理患者的手指力如何变化，这对于我们理解手部功能很有价值。
本研究旨在确定健康参与者在进行日常活动时各手指的力，并确定这些应用力的范围。
这是一项横断面研究，共纳入 25 名健康参与者（12 名女性：22-65 岁，13 名男性：20-53 岁）和 25 名骨关节炎患者（12 名女性：52-79 岁，9 名男性：64-79 岁）。在一个时间点进行检查。使用称重传感器对每个参与者进行校准，以提供牛顿的力输出。每位参与者两次完成 19 项日常生活活动。为每个任务绘制力随时间的变化曲线，并评估该任务中每个手指的最大力。
健康参与者的应用力范围为 1.4 ± 0.6 N 至 34.8 ± 1.6 N，骨关节炎患者的应用力范围为 2.3 ± 1.0 N 至 30.7 ± 3.7 N。
传感器允许在日常生活任务中实时监测手指力。这为根据手指募集情况对手部抓握进行隔离提供了机会，并提供了活动过程中力的大小信息。
测量各手指的力可以为手部提供更精确的生物力学模型，并确定疾病对手部功能的影响。
