Prostheses, Joint, Elbow, Radial Component
Definition : Implantable prostheses designed to replace the proximal end of the radius at the articulation point. These prostheses provide a partial substitution of the elbow articulation. They typically consist of a short stem that is anchored in the hollow center of the radius (i.e., the radial component) and attached to a ball that replaces the radial head at the articulation point. Some prostheses consist of two separate parts, the ball that replaces the radial head and a stem, permitting the selection of implant heads and stems that mate appropriately with the patient's anatomy and are easier to insert than a monolithic implant. Radial component elbow joint prostheses are usually made of polymers or a combination of metal and polymeric materials; the prostheses may be intended for implantation with or without bone cement. They are used in patients who suffer from osteoarthritis, rheumatoid arthritis, or recent trauma (e.g., fracture), in which the radius cannot be reconstructed with stable internal fixation.
Entry Terms : "Prostheses, Elbow, Hemi-, Radial, Polymer" , "Prostheses, Radial Head"
UMDC code : 16092