07799083 is referenced by 51 patents and cites 55 patents.

A motion restoring prosthesis to be interposed between the ends of two bones adjoining a mammalian appendage or spinal joint is formed of two components with the components having inner cooperating articulating surfaces and outer bone engaging surfaces. At least one of the components has an inner section made of relatively hard, stiff material defining one or the articulating surfaces and an outer section made of a softer material defining the bone engaging surface. The softer material having a hardness/stiffness characteristic compatible with the bone to reduce stress shielding and more evenly distribute the forces from the articulating surfaces to the associate bone interface.

Title
Prosthesis for restoring motion in an appendage or spinal joint and an intervertebral spacer
Application Number
11/919615
Publication Number
7799083 (B2)
Application Date
April 28, 2006
Publication Date
September 21, 2010
Inventor
Nicholas M Cordaro
Vista
CA, US
Colin M Smith
Dana Point
CA, US
Assignee
Seaspine
CA, US
IPC
A61F 2/44
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