Amirouche F, Gonzalez M, Koldoff J, Tioco J, Ham K
Department of Mechanical Engineering, University of Illinois, Chicago 60612, USA.
Technol Health Care. 2002;10(1):23-31.
This paper addresses the mechanics of the finger/pulley system when subjected to various excisions and repairs. Several cadaver hands were used to study the finger/pulley's function, finger joint dynamics, and the relationship between tendon excursion and finger joint angles of rotation. By using a method of continuous and simultaneous data acquisition of the entire finger joint's motion, a more detailed analysis was achieved. Our experimental investigation is based on the use of four micro-potentiometers inserted at the finger's joints and a pulley system to simulate tendon excursion. Using this procedure, a detailed kinematic analysis of the entire finger was performed. This included analysis of the intact hand, various pulley excisions, and reconstruction. In addition to introducing a new method of acquisition, a mathematical model was developed for the inverse dynamic analysis of the finger pulley system. From this model, the torques required at the joints for the motion were computed. The results provided new insight into possible ways of characterizing kinematic changes resulting from pulley damage and repair.
本文探讨了手指/滑车系统在接受各种切除和修复时的力学原理。使用了几只尸体手来研究手指/滑车的功能、手指关节动力学以及肌腱移动与手指关节旋转角度之间的关系。通过采用一种对整个手指关节运动进行连续同步数据采集的方法，实现了更详细的分析。我们的实验研究基于在手指关节处插入四个微型电位计并使用一个滑车系统来模拟肌腱移动。采用这个程序，对整个手指进行了详细的运动学分析。这包括对完整手部、各种滑车切除以及重建的分析。除了引入一种新的数据采集方法外，还开发了一个用于手指滑车系统逆动力学分析的数学模型。从这个模型中，计算出了运动时关节所需的扭矩。这些结果为表征滑车损伤和修复所导致的运动学变化的可能方式提供了新的见解。
