Implantable wrist joint assembly with spherical inter-support

摘要

A multi-component wrist joint assembly incorporated into reconditioned end surfaces established between an upper radius bone and at least opposing lower scaphoid and lunate bones. A first component is anchored into the upper radius reconditioned end surface and exhibiting a first exposed support surface. A second component is anchored into the lower scaphoid and lunate reconditioned end surfaces and exhibiting a second exposed support surface. A spherical shaped intermediate component is supported in at least one of eccentric or rotational fashion between the first and second anchored components.

主权项

1. A multi-component wrist joint assembly incorporated into reconditioned end surfaces established between an upper radius bone and at least opposing lower scaphoid and lunate bones, said assembly comprising:
a first component adapted to being anchored into the upper radius reconditioned end surface and exhibiting a first exposed and substantially hemi-spherical concave support surface; a second component adapted to being anchored into the lower scaphoid and lunate reconditioned end surfaces and exhibiting a second exposed and substantially hemi-spherical concave support surface; and a spherical shaped component supported in seated fashion within each of said concave support surfaces and between said first and second components, such that said spherical shaped component establishes each of eccentric and rotational articulation separately with said first and second anchored components.