Patent ID: 9717598
Date: 2017-08-01
CPC Classifications: A61F

Claim:
1. A prosthetic implantation system, comprising: a cutting tool comprising a spherical burr adapted for preparing a surface of a bone of a joint, the prepared surface including a body portion void and a keel void, the keel void extending into the bone at a depth greater than the body portion void; and a prosthetic component comprising: a body portion for attachment to the bone of the knee joint and having a bearing surface configured to replace at least a portion of the bone and an implantation surface configured to engage the body portion void; and a keel configured to be inserted into a corresponding keel void formed in the bone, wherein the keel projects outwardly from the implantation surface by an amount sufficient to inhibit movement of the body portion relative to the bone in both medial and lateral directions upon insertion into the keel void, wherein the keel extends along a longitudinal direction of the body portion and has a substantially uniform height above the implantation surface, wherein the substantial uniformity of the height remains continuous along a majority of the extent of the keel in the longitudinal direction, and wherein a cross-sectional shape of the spherical burr used to form the keel void matches a rounded cross-sectional surface of the keel.