Easily the most important part of your prosthesis that is manufactured to a custom molded model of the patient’s limb. It is vital that this critical component fits accurately and well, with a high degree of comfort and mobility.
The suspension system
The suspension system holds prosthesis on the resdiual limb and enables easy put on (donning) and take off (doffing).
Friction is used in the knees in order to control the knee joint during walking. Friction controls how far and how fast the knee bends and straightens during walking. Some knees have mechanical friction while others have hydraulic resistance. Computerized knees are also available that control the knee speed based on the person’s walking. Mechanical knees provide constant friction where the hydraulic knees and computerized knees change the knee speed depending on how fast the person is walking.
In order to mimic the capabilities of an able-bodied, a powered prosthetic ankle for walking and running was designed. A powered system has the potential to reduce the limitations in range of motion and positive work output of passive walking and running feet. Adjustable ankle components for leg prostheses allow an amputee to modify the pitch angle of the foot. This significantly expands footwear options with differing heel heights.
A good prosthetic foot must be strong, as it is taking on huge force and torque as you walk and run. It must be light, small, and yet functional and durable. For those who are most active, a prosthetic foot must mimic a normal foot during the act of walking. It must act as a shock absorber as you strike your heel to the ground, adapt to uneven terrain, provide a smooth rollover from heel to toe, and provide a rigid lever for propelling forward when you finish your step.
In terms of function, prosthetic feet can be categorized into the following groups: Solid Ankle Cushioned Heel (SACH), Elastic (flexible) Keel Foot, Single-Axis Foot, Multi-Axis Foot, Dynamic-Response Foot, and Microprocessor Foot.
Our team will advise you what type of foot is optimal for your ambulation level.