Tibia implant

A tibia implant for joint replacement, the tibia implant being made of metal alloy and comprising:

• a plateau section;
• and
• an anchor section,
• the plateau section comprising a first side configured to face a tibia and a second side configured to face away from a tibia;
• the plateau section further comprising a bearing region on the second side for articulating condylar joint surfaces, the bearing region provided on a side facing away from the tibia;
• the anchor section being pin-shaped or keel-shaped,
• the anchor section projecting from the first side of the plateau section and extending away from the first side in an axial direction,
• the anchor section being insertable in the axial direction into a channel prepared in the tibia,
• the plateau section having a first surface structure that is a three-dimensional, porous, open-pore surface structure on the first side,
• the first surface structure configured to contact tibia bone tissue with bridges, webs, or wall regions that are grippable from in the axial direction,
• the first surface structure having a first roughness,
• the anchor section comprising a first axial anchor region on a circumferential side with a second surface structure adjacent to the plateau section, the second surface structure being free of undercuts in a radial direction, with a second roughness that is lower than the first roughness, and
• the anchor section further comprising a second anchor region that is axially free-ending and has a smooth surface in the axial direction adjacent to the first axial anchor region.