SYSTEM AND METHOD FOR REPAIRING ARTICULAR SURFACES

摘要

A joint replacement system for repairing an articular surface of a first bone of a joint includes an anchor portion and an implant portion. The anchor portion includes an anchor to be secured to the bone, and an anchor fixation head including a bone-facing surface (BFS) extending radially outward from the anchor and an implant facing surface (IFS) extending from a periphery of the BFS. The implant portion is formed from a material (e.g., CoCr) more dense than the material of the anchor portion (e.g., Ti) and includes a fixation cavity to receive at least a portion of the anchor fixation head (AFH), the fixation cavity includes an anchor facing surface (AFS) configured to form a frictional connection with the IFS, and a load bearing surface having a contour for articulating against a cooperating articulating surface of a second bone of the joint.

主权项

1. A joint replacement system for repairing at least a first articular surface of a first bone of a joint, said system comprising:
a first implant system comprising:
an anchor portion formed from at least a first material, said anchor portion comprising:
a first anchor configured to be secured to said bone; andan anchor fixation head including a bone-facing surface and an implant facing surface, wherein said bone-facing surface extends radially outward from said anchor, and wherein said implant facing surface extends from a periphery of said bone facing surface and includes a first mating surface; andan implant portion formed from at least a second material more dense than said first material, said implant portion comprising:
a fixation cavity configured to receive at least a portion of said anchor fixation head, said fixation cavity including an anchor facing surface extending from an opening thereof, said anchor facing surface including a second mating surface configured to form a frictional connection with said first mating surface; anda first load bearing surface having a contour for articulating against a cooperating, second articulating surface associated with a second bone of said joint.