More Prosthetic Information

Prosthetics are devices that need to work with you. Our prosthetists will then help you customize the best fit for your prosthetic. Also, contact us today and see how we can find the right prosthetic for you.

Parts of a prosthetic

Various components make up a prosthetic. These parts are customizable, for example, the material used or the shape and more. The components include the liner, suspension, socket, the hand/foot and also other components. The following is how each part of the prosthetic is modifiable for your best fit.

Liner

• A liner will fit over the amputated limb. It also helps protect the limb from the socket by adding a barrier. An liner will then fit into a suspension to connect to the prosthetic. These materials include:

Silicone

• This material is highly stable and is also able to provide good adhesion for a limb with lots of soft tissue. It is also best to use silicone liners with shuttle-lock suspension. Soft and resistant to pressure, it is also durable and easy to clean. Additionally, this liner is ideal for people with low to moderate activity levels

Polyurethane

• A polyurethane liner is able to distribute pressure in the liner more evenly throughout the entire liner. It is also able to direct pressure away from high-pressure areas. Polyurethane has a comfortable, well-fitted and precise feel. It is also comfortable for all residual limb types. For any sensitive or scarred limbs, polyurethane is also an ideal material. It is also used with vacuum or suction suspensions. Also, it requires a Total Surface Bearing (TSB) socket. It is also recommended for individuals with low to high activity levels.

Copolymer

• A soft, cushiony and also quite elastic material. It is also friendly for limbs that are dry as it contains a skin-friendly oil. Works best with a pin or suction suspension. Also, it provides good protection for low activity individuals.

Suspension

The suspension is a sleeve that fits over the liner. It is also the main way the limb connects to the socket or creates a seal. The following is the different types of suspensions:

Vacuum

• This type of suspension forms a seal with the socket’s top edge. Then a vacuum pump and valve will be used to remove the air between the sleeve and the socket. This creates a vacuum that then firmly holds the sleeve to the socket. The vacuum also has the added benefit of improving circulation. It also reduces shear, and regulated the volume changes of the residual limb.

Shuttle-lock

• For this suspension, a pin on the sleeve connects to the lock on the bottom of the socket. For above the knee prostheses, we will use a lanyard system. This allows straps to pull the liner into the socket.

Suction

• Uses a one way valve, a sealing sleeve and a soft liner. When the sleeve covered limb is put into the prosthetic, the body weight pushes air out of the valve. This will then create a secure and stable seal with the socket. It also has reduced friction and shear.

Socket

There are various ways we can personalize a socket for you. First, our prosthetists will work with you to shape the socket to best fit you. Multiple designs are available. They include elevated vacuum, flexible inner, KISS systems and also Revolimb. We are also able to personalize your sockets with a graphic. If the graphic can be printed on fabric, it can then be put onto your socket.

What is a prostetic made of?

For a arm or leg prosthetic, various things can be changed to best fit your situation. These include:

Materials

A limb can be made with a variety of materials. These include wood, plastic, foam and also carbon fiber. Wood, plastic and also foam are more common for people who need something with high stability and low activity.

Carbon fiber

A lightweight material, it is used commonly in high active scenarios. It also provides good shock absorption. Carbon fiber feet are also designed to store energy. Depending on the prosthetic, then two springs are put into the foot. A spring in the heel and also another one in the forefoot. This means when you step down, the energy is stored and also provides an easier time lifting the foot. This can help with walking, running, and it also gives you more confidence in your step. The longer the spring, then the more responsive it is.

Multi-axial limb

In comparison to a single axial limb, a multi-axial limb is closer to a natural wrist/ankle in function. For example the forefoot is able to be lifted and lowered, rotated, and also rolled slightly. This also means a more comfortable walking experience and also a better walking experience on uneven surfaces.

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