Description
An above-knee prosthesis, also known as a transfemoral prosthesis, is an artificial limb designed to replace a missing or amputated leg above the knee joint. This type of prosthesis is used for individuals who have undergone amputation due to trauma, illness, or congenital conditions that affect the lower limb.
Components of an Above Knee Prosthesis:
Socket: The socket is the part of the prosthesis that fits around the residual limb (the remaining part of the amputated leg). It is custom-made to provide a snug and comfortable fit to ensure proper weight distribution and support.
Suspension system: The suspension system is used to secure the prosthesis to the residual limb. Various methods of suspension include suction sockets, straps, liners, or a combination of these, depending on the individual’s specific needs and preferences.
Knee joint: The knee joint is a crucial component that mimics the natural knee’s movement. It allows for flexion and extension, providing stability and ease of movement during walking or other activities.
Prosthetic foot/ankle: The foot/ankle component is responsible for shock absorption and energy return during walking. There are different types of feet available, such as flexible feet, energy-storing feet, and dynamic-response feet, each designed to accommodate specific activity levels and lifestyle requirements.
Pylon: The pylon is a lightweight, metal or composite tube that connects the socket to the knee joint and foot/ankle component. It provides structural support and allows the prosthesis to be adjusted for height.
Cosmetic cover: Some individuals opt for a cosmetic cover that gives the prosthesis a more natural appearance. This cover can be made to resemble the appearance of a real leg.
Customization and Fit:
Each above-knee prosthesis is custom-designed and fitted to meet the unique needs and characteristics of the individual wearer. Prosthetists work closely with patients to ensure proper alignment, comfort, and functionality. Regular follow-up appointments are essential to make adjustments, accommodate changes in the residual limb’s shape, and address any discomfort or issues that may arise.
Physical therapy is an integral part of the rehabilitation process for those using above-knee prostheses. It helps the individual learn how to use and adapt to the prosthesis, improve strength and balance, and regain functional independence.
It’s important to note that advancements in materials and technology continue to improve the design and function of above-knee prostheses, providing users with more comfortable and efficient mobility solutions.
