Body-powered prostheses are useful tools that can restore the ability to pick up and grasp objects and assist the user&#;s sound hand. Body-powered partial hand devices can help restore function when the finger loss is as the PIP or MCP level. For people with higher amputation levels, movements of the upper arm, shoulder and chest are captured by the harness and cable system, and used to open and close the hook or hand, similar to how a bicycle handbrake system works.

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Movements of the upper arm, shoulder and chest are captured by the harness and cable system, and used to open and close the hook or hand, similar to how a bicycle handbrake system works. As users grow accustomed to the feeling of varying tension on the cable, they may experience an improved sense of the position of the limb and the degree of opening on the terminal device. Hooks can be made of aluminum, steel, or titanium and can be rubber lined for better gripping. The grip force of a voluntary opening hook is determined by the number of rubber bands holding the hook closed.

The components of a body-powered prosthesis include:

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• A custom fit socket
• A terminal device such as a hook or hand
• A wrist unit
• A harness and cable system
• Above elbow prostheses will include an elbow unit
• Shoulder disarticulation prostheses will include an elbow and a shoulder

Many amputees like the durability and basic function of body-powered prostheses and find them particularly useful for working outdoors or in rugged or wet environments. A custom silicone interface can improve user comfort and is available in a wide range of colors.

Prosthetics

Transtibial (Below Knee) A transtibial prosthesis is an artificial limb that replaces a leg missing below the knee and commonly called prosthetic leg below the knee . Transtibial amputees are usually able to regain normal movement more readily than someone with a transfemoral amputation, due in large part to retaining the knee, which allows for easier movement.

In the prosthetic industry a transtibial prosthetic limb is often referred to as a &#;BK&#; or below the knee prosthesis.

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