Implants and related methods and apparatus for securing an implant on an articulating surface of an orthopedic joint

An implant system for resurfacing at least a portion of an articulating surface of a bone, the system comprising:

• an implant having a top articular surface and an opposing bone apposition surface, the implant comprising:
• a tray having the bone apposition surface;
• and
• a bearing plate mounted on the tray, the bearing plate being comprised of a polymeric material and having the top articular surface;
• an elongated fastener configured to rigidly mount to the implant so as to outwardly project from the bone apposition surface and prevent pivoting movement of the implant with respect to the fastener;
• and
• a tubular bone anchor adapted to encircle at least a portion of the fastener, the bone anchor comprising one or more threads or barbs formed on an exterior surface thereof.

An implant for resurfacing at least a portion of an articulating surface of a bone, the implant comprising:

• a body having a first side with a top articular surface and an opposing second side with a bone apposition surface, the bone apposition surface being adapted to bias against a natural or resected articulating surface of a bone, the body comprising:
• a tray having the bone apposition surface;
• and
• a bearing plate mounted on the tray, the bearing plate being comprised of a polymeric material and having the top articular surface;
• and
• means for securing a fastener to the second side of the body after the bone apposition surface is biased against the natural or resected articulating surface such that the fastener is rigidly fixed to the body so as to prevent pivoting movement of the body with respect to the fastener and such that applying increased tension to the fastener increases a force at which the bone apposition surface biases against the natural or resected articulating surface.