拉伸牵引是手法整复骨折的重要步骤,一般需依靠2名助手的臂力拉伸患肢部位的肌肉收缩力,矫正骨折的重叠移位,恢复正常肢体长度后,加以固定。由于患肢的肌肉收缩力较大,因此在手法牵引时劳动量很大。为改变这种状况,我们试制了一台手摇式骨科拉伸牵引器,解决了牵引者人力和臂力不足的问题。这一器械的基本原理是,采用螺旋杆带动两木板作相对运动,产生拉力以克服患肢肌肉的收缩力,便于进行矫正手术。牵引 Stretching and traction are the important steps in manipulating the fracture. Generally, it depends on the muscle strength of the two assistants to stretch the contractive force of the limb and correct the overlapping displacement of the fracture, and then restore the normal limb length and fix it. As the affected limb muscle contractility greater traction in the hands when a large amount of labor. To change this situation, we trialled a hand-cranked orthopedic traction retractor, which solved the problem of tractor’s manpower and lack of arm strength. The basic principle of this device is that the screw rod drives the two boards to move relative to each other to generate tension to overcome the contractile force of the limb muscles and facilitate the orthodontic operation. Traction