Prosthesis manipulation and control training, including training the patient to operate the basic movements and coordination of the prosthesis, its purpose is to make the patient can accurately and skillfully operate the prosthesis must make several basic movements and the combination of these movements.
   
 
1. Training of five basic control movements
(1) Shoulder flexion control action: Shoulder flexion control action is formed by the relative movement of the residual shoulder forward flexion and the healthy shoulder. This motion has a small range and can be combined with the flexion to control the opening hand.
(2) Shoulder lifting control action: In the triple cable prosthetic system, the power source of the elbow flexion mechanism is the lifting movement of the residual shoulder. When the shoulder is lifted on the residual side, the healthy shoulder must remain stationary as the fulcrum at one end of the traction cable, and the relative displacement can only be generated when the shoulder is lifted on the residual side.
(3) Upper arm flexion control action The forward flexion movement of the upper arm stump is the main power source for the manipulation of the upper arm prosthesis. When the patient bends the upper arm forward, the shoulder should remain relatively static, so as to form the traction displacement necessary for the manipulation of the prosthesis.
(4) Upper arm extension control action The back extension movement of the upper arm stump is actually a combined action, which is formed by the combination of the back extension of the upper arm and the forward flexion of the ipsilateral shoulder. This action is used as the power source to manipulate the elbow flexion, and can also be used to control the opening of the prosthetic hand.
(5) Forearm pronation and supination control action: the pronation and supination control of the forearm stump is used for the control of the wrist disengagement prosthesis with characteristic hinge, and the rotation mechanism can also be controlled to take the pronation and supination action of the forearm as the force source of the open hand. After the patient skillfully grasps the above basic movements, then carries on the combination movement training, the training should pay attention to avoid the mutual interference of each movement, so as to create the conditions for flexible and accurate manipulation of the prosthesis.
 
 
2 The control training of the rope type forearm prosthesis, the control training of the forearm prosthesis includes: the wear and removal of the prosthesis, elbow flexion, the manipulation of the mechanical hand and the completion of wrist flexion and extension, rotation, etc.
(1) Wear and take off of prosthetic limbs
① Unilateral forearm amputees can wear and remove prosthetic limbs by themselves.
② Bilateral forearm amputees should wear and take off prosthetic limbs with the help of trainers.
(2) Prosthetic forearm flexion: forearm amputees directly drive the elbow hinge through elbow flexion.
(3) Hand opening and closing: hand opening and closing of forearm prosthesis are divided into two kinds:
(1) unbowed elbow open hand: healthy shoulder motionless, as a fulcrum; The residual side bends the upper arm, bends the shoulder, sinks the shoulder, with the residual limb forward extension; Use the shoulder strap to pull the rope and open the fake hand.
② Elbow flexion open hand: first elbow flexion, and then open hand according to the above method. At this time mainly rely on the shoulder and arm flexion action.
(4) Wrist flexion, extension and rotation: wrist flexion, extension and rotation are passive actions, with the help of the other hand or others.
For patients with long forearm stump, the rotation of the forearm can be controlled by adding the rotation mechanism and using the remaining pronation and supination function. The pronation and supination of the forearm can also be used as the force source of the opening hand.