Department of Orthopaedics, Buddhist Tzu Chi General Hospital, Taipei, Taiwan, Republic of China.
Int J Med Robot. 2010 Dec;6(4):413-21. doi: 10.1002/rcs.351. Epub 2010 Sep 2.
This paper presents a novel robot designed for reduction of lower limb fractures, with the additional features of automatic controlled flexion of the knee joint, individual traction of thigh and leg, and foot rotation. The aim of this design is to assist the orthopaedic surgeon to perform better fracture reduction through motor control, in contrast to current manual control, and the results of assessments of its functions on normal subjects are presented in this paper.
The robot was designed to be mounted onto the operation table, and was controlled through open switch relay. Functional assessments were conducted on six healthy volunteers in terms of knee joint motion and lower limb traction; measurement of angle and distance was calculated from data obtained by a 3D ultrasonic motion system (Zebris(®) ).
The results showed a good correlation of the flexion angle between the robot and the subjects at the knee joint. In the traction tests, a steady lengthening of the proximal as well as the distal segment of the robot was observed, and a slight increase in subjects' limb length was also recorded, which might be due to distraction in the joint space.
This automatic control fracture table has distinct features compared with the conventional ones, and it is believed to be of assistance to surgeons when performing fracture fixations.
本文介绍了一种用于下肢骨折复位的新型机器人，具有膝关节自动控制弯曲、大腿和小腿单独牵引、足部旋转等附加功能。本设计的目的是通过电机控制辅助骨科医生更好地进行骨折复位，与目前的手动控制相比，本文介绍了其在正常受试者功能评估方面的结果。
机器人设计安装在手术台上，通过开放式开关继电器进行控制。对六名健康志愿者进行膝关节运动和下肢牵引的功能评估；通过三维超声运动系统（Zebris（®））获得的数据计算角度和距离的测量值。
结果表明，机器人和受试者膝关节的弯曲角度具有良好的相关性。在牵引试验中，观察到机器人近端和远端的长度稳定增加，并且记录到受试者肢体长度略有增加，这可能是由于关节间隙的分离。
与传统的骨折复位床相比，这种自动控制骨折床具有明显的特点，相信在医生进行骨折固定时会有所帮助。
