Fig. 2

a Left hip joint radiograph of a 78-year-old female with advanced osteoarthritis. (I) The level of fixation of fit-and-fill stem, (II) The level of fixation of tapered wedge stem. b Patient was treated by cementless total hip arthroplasty (THA) using fit-and-fill stem. c The degree of stem subsidence is 8.2 mm 6 weeks after the surgery. d Preoperative three-dimensional (3D) planning (axial plane) for fit-and-fill stem (3D template, Kyocera, Kyoto, Japan) at the level of I in a. e Preoperative 3D planning (axial plane) for tapered wedge stem at the level of II in a