Tibial tray with fixation features

An orthopaedic prosthetic component, comprising:

• a plate including a distal surface, a distal-facing opening defined in the distal surface, a proximal surface configured to receive an insert component, and a curved outer wall extending between the distal surface and the proximal surface, and
• an elongated stem extending from the distal surface of the plate to a distal tip,
• wherein the plate further includes an intermediate wall positioned between the proximal surface and the distal surface, and an inner wall that extends inwardly from the distal-facing opening to the intermediate wall to define a distal pocket,
• wherein the plate further includes a plurality of inner pockets in the intermediate wall, each inner pocket being defined by a base wall that is positioned proximal of the intermediate wall and a rim wall that extends between an opening in the intermediate wall and the base wall, and each inner pocket including an annular channel positioned between the intermediate wall and the base wall,
• wherein the distal surface and the intermediate wall have a surface roughness (Ra) in a range of 3.5 microns to 6.5 microns,
• wherein each rim wall includes a convex distal surface and a concave proximal surface that cooperate to define the annular channel,
• wherein each inner pocket includes a narrowest opening extending parallel to the base wall of the inner pocket that is defined by the convex distal surface of the rim wall, and the narrowest opening of the inner pocket has a surface area that is less than the surface area of the base wall of the inner pocket,
• wherein an imaginary line on the convex distal surface defines a peripheral edge of the narrowest opening of each inner pocket, the peripheral edge having a peripheral edge length and defaming a surface area of the narrowest opening of the inner pocket, the plate has a total peripheral edge length that is equal to the sum of the peripheral edge lengths of the plurality of inner pockets, and the plate has a total opening surface area that is equal to the sum of the surface areas of the narrowest openings of the plurality of inner pockets, and
• wherein a ratio of the total peripheral edge length to the total opening surface area is in a range of 0.31 to 0.46.