Catalogue No. 1 One of the first prototypes of an acrylic femoral hemiarthroplasty, intended for fixation by means of a nut-and-bolt system Catalogue No. 2 The first acrylic implant. First inserted in 1946. Implanted only in the femoral neck, by means of a stem. Anterior approach to the hip joint, resection of head, followed by shaping of the neck with a hand tool to fit the implant base. The tip of the stem might protrude from the femoral shaft cortex. First complications were subsidence and protrusion of the tip below the trochanter, and stem breakage. Catalogue No. 3 Acrylic hemiarthroplasty with metal-reinforced stem. Subsidence was still a problem; the implant might also go into varus. Catalogue No. 4... T. Judet, H. Judet |