The knee joint is one of the most important components of above-knee (transfemoral) prosthetic legs. Its role is to support the natural movement of the knee during walking, provide stability while standing and help maintain balance on different surfaces. The appropriate joint is determined in line with the specialist physician's assessment and prescription, according to the person's activity level and general health.
Types of Knee Joints
Prosthetic knee joints can generally be grouped according to their working principles:
- Mechanical (body-locking or hydraulic) joints: Regulate movement with spring or hydraulic resistance systems. They may be chosen for various activity levels.
- Microprocessor knee joints: Attempt to adjust resistance automatically by detecting walking speed and ground conditions through sensors; you can find the working logic of these electronically controlled systems in detail on the microprocessor knee prosthesis systems page.
The differences between the two approaches can be considered through the comparison of mechanical and microprocessor knee joints.
Functions in Daily Life
The choice of knee joint is planned to support the person's everyday needs. Current joints may offer support in the following areas:
- More balanced walking on level ground, ramps and slopes
- Locking features for additional safety while standing
- In some models, a certain degree of resistance to water and dust
The suitability of the joint for the person is assessed together with trial and adaptation processes. All applications are carried out in line with the physician's medical report and the specialist's recommendation.
Adaptation and Follow-up
Successful use of a prosthesis depends not only on the features of the device but also on accurate measurement, an appropriate socket and regular follow-up. For this reason, periodic check-ups at the center and rehabilitation support are important during the adaptation process.
This content is for informational purposes; for diagnosis and treatment, you should consult your physician.
