Introduction to below knee prosthesis leg (1)
Below knee prosthesis leg is a prosthetic limb for amputation of the lower leg. Applicable to patients with amputation within 8 cm of the knee joint to 7 cm above the medial malleolus.
The BK prosthesis consists of a receiving cavity, a hanging part, a calf connecting part, a prosthetic foot and a squat
The receiving cavity is the link between the residual limb and the prosthesis. It achieves force and transport by embracing the volume of the disabled.
Passing. The hanging part (lap strap) suspends the prosthesis on the residual limb, and the prosthetic foot not only satisfies the appearance
Requirements, and to meet the requirements of the walking function, it can be divided into static feet, single-axis feet, multi-axis feet and so on.
The shank connecting portion connects the receiving cavity and the prosthesis, and has the following functions:
(1) Correctly connect the prosthetic foot and the receiving cavity;
(2) Transfer the patient's weight from the receiving cavity to the prosthetic foot
(3) Make the legs beautiful.
According to the structure, the below knee prosthesis leg can be divided into:
1, shell prosthesis (also known as exoskeleton prosthesis): it uses the shell to bear the load, and the shell
The shape is made into the shape of a human limb. The calf prosthesis is usually made of glass reinforcement, carbon fiber reinforcement,
Made of aluminum or polyethylene sheet. The calf prosthesis made of aluminum, polyethylene sheet or carbon fiber is usually empty heart.
2, skeletal prosthesis (also known as osteophysical prosthesis or modular prosthesis): it is a metal tube Or a plastic tube that connects the receiving cavity, the prosthetic foot and the ankle, all pressure is transmitted through the connecting tube;
The coat is made of a soft sponge that makes the prosthesis look more realistic.
Folding and editing the main materials of this paragraph and their applications
At present, polyethylene has gradually become a common material for making a receiving cavity. It has easy molding, thermoplastic
The characteristics of the formation, and the price is cheap, it is convenient to make the popular calf prosthesis. Made of polyethylene pipe
The popular calf prosthesis is strong, durable, lightweight, and inexpensive.
2, polyethylene (PE) foam is a synthetic foam material, widely used in the inner bushing, can be directly put on the grinding after heating
The gypsum is formed on a male shape, and the polyethylene foam provides a damping surface for the residual limb, making the patient wear a more comfortable suitable.
3, wood usually has an inner hardwood keel to make the foot firm.
4. Fabric Used as a shoulder strap for the limbs, belly straps, cloth straps and upper limbs. Residual leg socks are usually made of wool, cotton and people
Made of fiber and other synthetic materials. Their role is to dry the skin and cushion the residual limbs.
Less shear and reduced volume to improve fit.
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