Edward Reinhard Weber
Physician in Little Rock, AR
License number
Colorado 19220
Issued Date
Jan 14, 1975
Renew Date
Dec 31, 1978
Expiration Date
Dec 31, 1978
Type
Physician
Address
Address
Univ Of Arkansas M C, Little Rock, AR 72201
Professional information
Prosthetic Wrist Joint
US Patent:
4307473, Dec 29, 1981
Filed:
Feb 11, 1980
Appl. No.:
6/120559
Inventors:
Edward R. Weber - Little Rock AR
International Classification:
A61F 103
US Classification:
3 191
Abstract:
A prosthetic wrist joint for anchoring into the radius and the metacarpals includes a radial component, a metacarpal component and an intermediate component. The radial component has a part-cylindrical bearing surface and a stem portion for insertion into the end of the radius bone. The metacarpal component has a ball-like hinge portion and a pair of outwardly protruding prongs for anchoring into the second metacarpal and the third metacarpal. The intermediate component includes a cylindrical bearing surface which cooperatively engages the part-cylindrical bearing surface of the radial component, and a socket-like recess for receiving the ball-like hinge portion of the metacarpal component for movement in the direction of radial-ulnar deviation. The modified ball and socket arrangement between the metacarpal component and the intermediate component permit limited rotational movement about the longitudinal axis of the arm. The three components are arranged such as to have a full range of motion wherein wrist motion is limited solely by the surrounding soft tissue rather than by the wrist prosthesis components.