In cases of lower limb muscle weakness or paralysis, long leg braces (KAFO, knee-ankle-foot orthosis) extending from the knee to the foot may be used. The knee joint in these devices is an important part that supports the leg while standing and walking, and it can be designed with different mechanisms in various types of orthoses. Electronically controlled knee joints offer a different user experience compared with conventional mechanical locking systems.
Working Principle
In an electronically controlled knee joint, the locking mechanism is managed by a sensor and an electronic unit. The device detects the phases of gait and locks or releases the joint at the appropriate moments. Whether the joint is locked or free can be communicated to the user through light, vibration or audible signals. The electronic unit usually runs on a rechargeable battery, and regular charging is recommended.
This mode of operation is not the same as microprocessor-controlled KAFO systems, which regulate knee resistance variably throughout gait. Although both approaches may use electronic components, the method of controlling the joint and the suitability criteria may differ.
Possible Contributions
- Support and balance when standing up and walking
- Reduced need to bend down to unlock the joint
- A simple remote control or button system for operation
- A closed design that reduces interference from clothing
Principles of Use
Such devices are determined according to the person's muscle strength, joint range of motion and gait characteristics. The suitability, measurement and fitting of the device are carried out in line with the specialist physician's prescription and medical report. Rehabilitation support and regular check-ups are important during the period of getting used to the device.
This content is for informational purposes; for diagnosis and treatment, you should consult your physician.
