The present invention relates to a knee joint prosthesis including femoral and tibial components. The bodies of the components possess a network of channels which may be used to deliver bone cement to the component bone interface after the components are implanted. The body of the femoral component possesses a network of channels which is in communication with a bore on the distal surface of the component which may be used to deliver bone cement into the network of channels after the component is implanted. The body of the tibial component possesses a network of channels which is in communication with a bore on the proximal surface of the component which may be used to deliver bone cement into the network of channels after the component is implanted. The components are suitable for implantation using arthroscopic as well as open surgical procedures. The components may be used as unicondylar implants in either compartment of the knee or in both compartments of the knee.