Implant and joint implant

A joint implant, comprising:

• a first joint component and at least one second joint component cooperating with the first joint component, wherein at least one of the first joint component and the at least one second joint component are configured in the form of an implant with a base body and a shank, the shank being insertable into a bone cavity,
• wherein:
• the shank is made of a plastic and defines at least one bone contact face,
• the at least one bone contact face is provided or coated with a first biocompatible bone contact layer or bears a first biocompatible bone contact layer,
• the shank is intended to be anchored in the bone cavity without bone cement,
• the first biocompatible bone contact layer is formed entirely closed,
• the base body has a base body bone contact face for abutting against a prepared bone face,
• the base body bone contact face is provided with a second biocompatible bone contact layer or bears a second biocompatible bone contact layer,
• the second biocompatible bone contact layer has a thickness in a range of about 1 μm to about 1000 μm,
• the second biocompatible bone contact layer has a roughness in a range of about 0.5 μm to about 10 μm,
• the joint implant is configured in the form of a knee joint endoprosthesis,
• the first joint component is configured in the form of a tibial component,
• the at least one second joint component is configured in the form of a femoral component,
• the first joint component and the at least one second joint component each comprise interacting joint faces,
• at least one of the first joint component and the at least one second joint component is formed monolithically;
• the first biocompatible bone contact layer is made of a biocompatible plastic;
• and
• the second biocompatible bone contact layer is made of the biocompatible plastic.