【摘要】 目的 研究单手操作手机时拇指的关节角度与接触力，分析拇指关节的关节角度与接触力的生物力学特征以及影响因素，为拇指狭窄性腱鞘炎的预防、康复以及治疗提供生物力学依据。方法 使用Vicon光学运动捕捉系统和电阻式薄膜力传感器采集大学生志愿者单手操作手机时拇指关节角度和指尖接触力，并对人体参数、关节角度和接触力进行统计学多因素相关性分析。结果 通过仪器测量得到单手手机操作时上滑、顺时针转、右点、左点、左滑等动作的关节角度与接触力；统计分析表明，手长、拇指总长对各关节角度均值和最大接触力有显著影响(P<0.05),且手长与掌指关节角度均值、最大接触力基本呈负相关。结论 减小拇指运动幅度避免拇指过伸或过屈，或减少使用手机的频率，或减少操作手机的作用力，可以一定程度上减少拇指屈肌腱和腱鞘与骨纤维管道的摩擦力以及相互之间的挤压力，从而可以减少拇指狭窄性腱鞘炎的形成。更多还原

【Abstract】 Objective To study the joint angle and contact force of the thumb during one-handed operation on mobile phones, analyze the biomechanical characteristics and influencing factors of the thumb joint angle and contact force, and provide the biomechanical basis for prevention, rehabilitation and treatment of thumb stenosing tenosynovitis. Methods Vicon optical motion capture system and resistive thin film force sensor were used to collect the thumb joint angle and fingertip contact force of college volunteers when they operated mobile phones with one hand, and statistical multi-factor correlation analysis on human body parameters, joint angle and contact force was conducted. Results The joint angle and contact force of one-handed mobile phone operation, such as sliding up, turning clockwise, right pointing, left pointing and sliding left, were obtained through the instrument measurement. Statistical analysis showed that hand length and thumb length had a significant influence on the average angle and the maximum contact force of each joint(P<0.05), and hand length was basically negatively correlated with the average angle and the maximum contact force of metacarpophalangeal joints. Conclusions Reducing the amplitude of thumb movement to avoid thumb hyperextension or flexion, or reducing the frequency of using mobile phones, or reducing the force of operating mobile phones, can reduce the friction between flexor tendon and tendon sheath of thumb and bone fiber duct, as well as the mutual squeezing force to some extent, thus reducing the formation of thumb stenosing tenosynovitis.更多还原