1 Prosthetic leg replacement 20 points any of prosthetic leg

1. Prosthetic leg replacement. 20 points. any of prosthetic leg replacement. Could be condition Mention what is the condition: example the prosthetic arm conditions: carpal, metacarpal radial, elbow, humeral, etc. a. Discuss about the principle b. Elements involved in the prosthetic leg development c. Motion orientation of the device d. Additional supporting information

Solution

principle involved in prosthetics:

Although many prosthetic principles used in treating adults apply to the treatment of children as well, the child with a lower-limb deficiency presents the prosthetist with a unique range of considerations, both practical and philosophical. Most techniques used with adult amputees must be downsized, sequenced in degree of complexity, modified or completely altered to match the ever-changing needs of children.

Basic prosthetic principles, however, still apply. For example, if ligamentous laxity at the knee is present, then the knee joint should be protected with a supracondylar socket or with joints and a thigh corset. Although distal edema is generally not a common problem for patients with congenital BK deficiencies, distal end pads are still indicated to prevent excessive pressure, for general comfort and to provide a means of accommodating growth.

As a basic principle, no form of amputation should be performed until all parties involved agree to the decision. Each case must, of course, be considered individually. The key joint to be preserved must be identified and then surgical procedures can be performed to correct leg lengths, increase stability or correct malrotation. Amputation may be performed when recognized as the best option, and prosthetic fitting can then proceed.

elements involved in prosthetic leg development:

The typical prosthetic device consists of a custom fitted socket, an internal structure, knee cuffs and belts that attach it to the body, prosthetic socks that cushion the area of contact, and, in some cases, realistic-looking skin.

A prosthetic device should most of all be lightweight; hence, much of it is made from plastic. The socket is usually made from polypropylene. Lightweight metals such as titanium and aluminum have replaced much of the steel in the pylon. Alloys of these materials are most frequently used. The newest development in prosthesis manufacture has been the use of carbon fiber to form a lightweight pylon.Certain parts of the limb have traditionally been made of wood and rubber. Even today the feet are made from urethane foam with a wooden inner keel construction. Other materials commonly used are plastics such as polyethylene, polypropylene, acrylics, and polyurethane. Prosthetic socks are made from a number of soft yet strong fabrics. Earlier socks were made of wool, as are some modern ones, which can also be made of cotton or various synthetic materials.