Wrist implant

Details Wrist implant Wrist implant

1985-03-07

1987-02-24

Apley, Richard J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

623 18, 623 16, A61F 242

Patent

active

046455051

ABSTRACT:
A wrist implant for stabilizing the proximal carpal row and preventing ulnar migration thereof includes a body having a generally planar, radial surface which has a teardrop shape defined by curvilinear dorsal and palmar lateral edges and a semicircular medial edge. The body further defines generally triangular or wedge-shaped dorsal and palmar surfaces which join to form a curved medial surface. The body defines a smooth, cup-shaped, concave recess including a lunate surface. The recess is configured to receive the carpal row lunate bone. The implant further includes a proximal stem which extends perpendicular to the radial surface. The implant is adapted to be positioned at the distal end of the radius with the stem inserted into the intramedullary canal of the radius bone. The implant constrains the proximal row of the carpal bones, stabilizing the joint and preventing ulnar migration of the wrist bones.

REFERENCES:
patent: 3879767 (1975-04-01), Stubstad
patent: 3987500 (1976-10-01), Schlein
patent: 4131957 (1979-01-01), Bokros

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