Total knee arthroplasty system and method

摘要

Disclosed herein are prosthesis, surgical tools, and methods to preserve one or more ligaments of the knee by cutting a least a portion of natural bone during joint surgery. The natural bone may be cut using various methods and associated cutting guides, and the natural bone is retained along with the natural attachment of an associated soft tissue structure. The bone block cutting guides may create a variety of standard natural block shapes or may create mechanical mating features (e.g., keystone or dovetail configuration) in the natural bone portion that may be inserted, wedged, press-fit, and/or mechanically attached to the tibia. The natural bone block with the associated soft tissue may be further secured by incorporating features in the tibial prosthesis, providing the surgeon with additional fixation components and/or fixation mechanisms.

主权项

1. A method of preserving a cruciate ligament in a knee joint during knee arthroplasty, comprises the steps of:
accessing a surface of a tibia of the knee; separating a tibial bone portion from the tibia, the tibial bone portion including a cruciate ligament attachment point, the cruciate ligament extending to a femur of the knee joint; preparing the tibia to receive a tibial prosthesis; implanting the tibial prosthesis on the tibia, the tibial prosthesis including an anterior portion sized and configured to accommodate the tibial bone portion; and attaching the tibial bone portion to the tibia, whereby the cruciate ligament reconnects the femur to the tibia.