Knee Diserticulation Prostheses

KNEE DISARTICULATION PROSTHESES

Knee disarticulation prostheses are used after amputation at the knee joint. In this type of amputation, the femur (thigh bone) is preserved, and the knee joint is removed from the natural articulation between the thigh and the tibia. Because knee disarticulation provides a larger surface area, the prosthesis may offer more stable fixation and better load distribution.

Features of Knee Disarticulation Prostheses:

Knee Joint Function: The prosthesis includes a specialized knee joint designed to replace the natural knee joint. This joint provides flexibility for activities such as walking and sitting.
Socket Design: The socket is designed to be wide and stable, fitting around the femur. This design ensures secure fitting of the prosthesis and better load distribution.
Joint Control: The prosthetic knee joint may be mechanical, hydraulic, or microprocessor-controlled. Microprocessor knees automatically adjust the knee movement according to the user’s walking speed and terrain, providing a more natural gait.
Foot Component: Knee disarticulation prostheses are complemented with various foot components tailored to the user’s needs. Options include energy-storing feet or simpler solid feet.

Advantages:

Stability and Comfort: Due to the wide contact area, the prosthesis is more stable on the leg and provides improved load distribution.
Natural Sitting Position: Since the amputation is close to the knee joint, the user’s knee aligns better with the other leg when sitting, offering both aesthetic and functional benefits.
Lower Energy Consumption: Generally provides a more natural gait with less energy expenditure compared to above-knee prostheses.

Rehabilitation and Adaptation:

Users of knee disarticulation prostheses require physiotherapy for optimal use. The rehabilitation process includes relearning basic activities such as walking, sitting, and standing. Additionally, training on more complex movements like climbing stairs and walking on slopes is important. Knee disarticulation prostheses offer a strong option for active individuals, providing high function and comfort when properly fitted.