Patent ID: 8709091

Claim:
An orthopaedic prosthesis comprising: a unicompartmental tibial insert comprising: a platform including an upper bearing surface and a bottom surface, the bottom surface having a recessed pocket defined therein, and a substantially U-shaped keel extending downwardly from the platform, wherein the substantially U-shaped keel includes (i) a first downwardly-extending surface extending perpendicularly from the bottom surface of the platform to a distal-most point, the first downwardly-extending surface having a first channel defined therein extending in the anterior-posterior direction and a pair of auxiliary channels defined therein extending perpendicular to the first channel, each of the auxiliary channels being in fluid communication with the first channel and the recessed pocket such that the recessed pocket is fluidly coupled to the first channel, (ii) a second downwardly-extending surface extending perpendicularly from the bottom surface of the platform to a distal-most point, and (iii) a rounded, distal surface defining an arc of about 180-degrees connecting the first and second downwardly-extending surfaces, the arc defining a continuous radius extending from the distal-most point of the first downwardly-extending surface to the distal-most point of the second downwardly-extending surface.