Prostheses
HYDROXYAPATITE
The patients received a phase 3-alpha Oxford medial UKR with ArCom ultra-high molecular weight polyethylene bearing (Zimmer Biomet, Warsaw, IN, USA), and the femoral component was either CLTP, CTP or CSP. The cemented components (both tibial and femoral) were fixed with bone cement (Refobacin Bone Cement R, Zimmer Biomet, Warsaw, IN, USA). The cement was applied to the femoral component concave side and the peg, as well as to the prepared distal femoral bone. CLTP components were inserted by cementless press-fit fixation and had a plasma-sprayed 750-µm-thick titanium coating with an additional plasma-sprayed 55-µm-thick hydroxyapatite (HA) coating.