Prosthetic Arm

In medicine, a prosthesis is an artificial device that replaces a missing body part, which may be lost through trauma, disease, or congenital conditions. Prosthetics are intended to restore the normal functions of the missing body part.Prosthetic amputee rehabilitation is primarily coordinated by a prosthetist and an inter-disciplinary team of health care professionals including psychiatrists, surgeons, physical therapists, and occupational therapists.A person's prosthesis should be designed and assembled according to the person's appearance and functional needs. For instance, a person may need a transradial prosthesis, but need to choose between an aesthetic functional device, a myoelectric device, a body-powered device, or an activity specific device. The person's future goals and economical capabilities may help them choose between one or more devices.

The comfort and effectiveness of a prosthesis is largely governed by how well it fits onto the remaining part of the patient own limb, which is called their residual limb (or sometimes, informally, the "stump" term some people understandably find offensive, though it is, nevertheless, widely used in the medical world). The connecting part of a prosthesis is called the socket and it's carefully molded around a plaster cast taken from the residual limb.
Attachment Mechanism
A well-fitting prosthesis is usually secured to a residual limb by what's called a suspension system (which might be an elastic sleeve, a suction socket, or old-fashioned straps and harnesses). A snug, secure fitting is vital for comfort and ensures the limb can be properly controlled. Often the socket is itself a part of the attachment: for example, a prosthetic leg socket may consist of a large hollow plastic casing into which the residual limb is inserted.
Fused Deposition Modeling
Natural limbs are pulled back and forth by muscles stimulated by our brains; in much the same way, the simplest functional prostheses are operated by systems of cables that run through them, doing the job of the muscles. One common type of prosthetic hand is a pincer, sometimes worn inside a glove (for cosmetic reasons) that can be opened or closed by pulling cables attached to the opposite shoulder.
Learning to live with a new limb
Technology is only part of the story, of course. Getting used to a brand new part of your body is a physical and psychological challenge involving a partnership between the patient and their prosthetist. This hugely important person works with you at every stage of the process, from choosing the best prosthesis for your needs; through the process of measuring, manufacture, and fitting; to helping you learn how to operate your new limb; and tackle new challenges such as taking up a sport or activity.

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