What is the condition of using hydraulic knee joint in thigh prosthesis?
At present, the thigh prosthesis mainly uses air pressure joint, hydraulic joint and intelligent prosthesis joint. The prosthesis joint is the most important part of the thigh prosthesis. Whether the thigh prosthesis is good or not depends on the joint. When do patients use the prosthesis hydraulic joint?
Pneumatic joint and hydraulic joint are both passive prostheses, which are driven by the swing of the leg stump. They are all designed and manufactured by real legs of human body in different periods. In short, the pneumatic joint is similar to the older human joint, while the hydraulic joint is similar to the joint of young people, so most people will say that the pneumatic joint is suitable for the elderly, and the hydraulic joint is suitable for the young.
The hydraulic joint thigh prosthesis belongs to the high-grade prosthesis, which has low liquid compression rate (high stability), large motion damping, small joint swing range and is suitable for young people's large-scale motion. No matter how many axes of the air pressure joint, relatively speaking, it must not be as good as the hydraulic joint. But good joints are not necessarily suitable, because everyone has different requirements for the performance of the prosthesis. If you are an older person who doesn't usually exercise much, it's almost as effective to install a hydraulic joint or a pneumatic joint, but the hydraulic joint is much more expensive than the pneumatic joint. If you spend a lot of money to install the hydraulic joint, it's almost the same as the cheap pneumatic joint. I believe that many patients know how to choose. If it's a young man who usually does some sports, such as jogging and playing basketball, the effect of the pneumatic joint is certainly not as good as that of the hydraulic joint. Therefore, the hydraulic joint is suitable for some patients with more common movements.
The hydraulic follow-up is better, the gait effect is better, of course, it will be more expensive, but it is absolutely worth it for patients who need to exercise. However, the hydraulic joint also has a disadvantage that the oil is contained in the cylinder block. If the weather is too cold, the performance of the prosthesis will be affected. There are also some effects on the joints caused by the placement of prostheses. When not in use, the prostheses should be upright and not placed randomly.