The patients with thigh amputation usually choose the prosthesis according to the length of the stump. The hydraulic joints are suitable for the patients with knee amputation. It doesn't matter for the patients with middle and long stumps to choose the joint. The pneumatic or hydraulic four-bar pneumatic knee joint or multi axis geometric locking knee joint can be used. But the short stump must use the air pressure or the hydraulic pressure knee joint with the multi axis lock.

Today, I'd like to talk about the prosthetic knee joint. All the knee joints are mechanical joints. To add air pressure, hydraulic pressure and intelligent control units to the mechanical joints are air pressure knee joints, hydraulic knee joints and intelligent knee joints. Some knee joints have multi axis geometric lock or single axis load-bearing self-locking device at the same time.

In fact, the length of each person's stump is different, and the shape of the amputation layer is different. Whether there is skin grafting or not needs to see the stump first, and then recommend a suitable prosthetic assembly scheme within the scope of patients' purchasing power. The quality of walking gait is also related to the age, weight, living environment of the patient and the level of the technician when the prosthesis was first assembled.

Another is that the lighter the prosthesis, the better. So the key point is that the minimum standard for amputees to choose thigh prosthesis is actually light, labor-saving, safe and comfortable.

Portability means that the weight of the joint itself is low. The imported alloy knee joint is light and durable, and every link of the prosthesis accessories and the receiving cavity should be selected based on the principle of reducing the weight of the prosthesis.

Labor saving means that we should choose the knee joint with air pressure or hydraulic power.

Safety refers to: multi axis knee joint with geometric lock, or load-bearing self-locking knee joint, manual unlocking knee joint, etc. this kind of knee joint can let the patient go downstairs alternately, down the slope, bus, steps without falling. If you want to walk without worry and not worry about falling down, can you walk with courage? That's more natural.

Comfort refers to the adaptation of the receiving cavity to the stump. I will develop the basic knowledge of cavity material, mouth shape and so on. The technique of receptive cavity is very important. If the patient does well, he will walk naturally and further. As a technician, I will continue to improve my skills and better serve the patients with three paralysis.

To sum up, in fact, if conditions permit, the patients with thigh amputation choose multi axis geometric lock air pressure or hydraulic knee joint + carbon fiber energy storage foot plate. Only in this way can the value of the prosthesis be reflected, which is the embodiment of the selection criteria of the patients with knee amputation.