What is a prosthetic arm

Prostheses: what is it?

In simplified terms, a prosthesis consists of a shaft and a functional part. In exoprostheses, the shaft is attached to the body surface, and tools or artificial body parts (e.g. mechanical hand) serve as functional components (fitting parts). With endoprostheses, the shaft of the hip joint is anchored in the bone and the functional parts imitate joint parts (e.g. the joint ball in the hip joint).

Prostheses are made of metal (e.g. titanium), plastic (e.g. polyethylene) and / or ceramics. Metal endoprostheses are no longer made from ferromagnetic (magnetizable) metals. Therefore, wearers of such a metal endoprosthesis can also expose themselves to strong magnetic fields (e.g. during an MRI examination). In the past, however, ferromagnetic metals were also used to manufacture prostheses. People who wear such prostheses may not be able to undergo an MRI scan.

Patients with a prosthesis receive a prosthesis pass in which it is noted which material the prosthesis is made of. This pass also shows where and when the prosthesis was fitted or fitted. In the case of certain examinations or complications (e.g. material incompatibility), this information is important for the attending physician or the orthopedic technician.