Amputees can choose their prosthesis according to the guidance of a technician. The technician will provide a variety of assembly combinations according to the specific conditions of the patient's stump, and explain the characteristics of each program, so that the patient can choose according to his own situation. 

After determining the prosthesis assembly plan, the prosthetist needs to pay attention to the quality of the joints and connectors, and the alignment adjustment of the prosthesis and the body when fitting. All are high-tech processes. Therefore, it is recommended to choose a manufacturer with good technology, reputation and good after-sales service for prosthetic assembly. 

Do not blindly choose prosthetic products, you need to determine according to your own economic situation, choose products within the scope of your own economic conditions. 

 If you have been engaged in manual labor for a long time or a large amount of activity, it is recommended to choose durable products with a long service life; If you like to exercise, patients who need to walk on uneven roads, it is recommended to choose some more flexible or bionic products. 
 

 Each prosthesis product has its own applicable weight range, patients in the choice of prosthesis should be as far as possible to choose products that match their own weight, if the patient's weight exceeds the range of the prosthesis, it will lead to shortened the service life of the prosthesis product; Patients with low body weight who choose prosthetic products suitable for large weight will feel that the prosthesis is very heavy, walking is laborious, and there will be no good gait. 

 If the young person exercises a large amount of exercise, it is recommended to choose a flexible prosthesis; The elderly need to choose a relatively safe prosthesis because of the low amount of exercise. 

 The prices of domestic products and imported products of electromechanical upper arm prostheses are different, and the motivity of the elbow joint is also very different. 

The leg prosthesis is mainly composed of the prosthetic socket, the connector, the ankle, the foot plate, and the false muscle. The material of the prosthetic socket is mainly plate; Most of the connector materials are alloy steel, aluminum alloy, titanium alloy, etc.; Foot board can be divided into ordinary foot board, energy storage foot board, sports foot board. 

BK prosthetic materials are also domestically produced and imported. There is also a silicone liner process in modern prosthetics, which is mainly suitable for patients with poor skin conditions on the stump extremities, and patients with diabetes or tumor amputation. 

BK prosthetics can be divided into ordinary type, standard type, comfort type. The price needs to be selected according to their actual situation and economic affordability.