Journal of Orthopaedic Science

, Volume 7, Issue 1, pp 74-78

Nonself-centering Bateman bipolar endoprosthesis for nontraumatic osteonecrosis of the femoral head: a 12- to 18-year follow-up study

  • Ichiro NagaiAffiliated withDepartment of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
  • , Yoshio TakatoriAffiliated withDepartment of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
  • , Yoshihiro KurutaAffiliated withDepartment of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
  • , Toru MoroAffiliated withDepartment of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
  • , Tatsuro KaritaAffiliated withDepartment of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
  • , Akihiko MabuchiAffiliated withDepartment of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
  • , Kozo NakamuraAffiliated withDepartment of Orthopaedic Surgery, Faculty of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan

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Abstract.

We studied the long-term results of bipolar endoprosthetic replacement in 12 patients (12 hips) 12 to 18 years after surgery. These patients had Ficat stage III nontraumatic osteonecrosis of the femoral head. The original Bateman universal proximal femoral endoprosthesis, which did not have a self-centering mechanism, was inserted without cement as a primary surgical intervention. Three patients underwent revision surgery, 3, 17, and 17 years after surgery, respectively. The reasons for revision surgery were migration of the stem in 2 patients and migration of both the stem and the outer cup in 1. In the remaining 9 patients, the total Merle d'Aubigné and Postel score was 16.1 ± 1.3 at the time of follow-up. Radiographs showed migration of the endoprosthesis in 1 of these 9 patients. Thus, 11 of the 12 patients retained the endoprosthesis 12 years or more after implantation. We concluded that the original Bateman endoprosthesis was effective in delaying the need for total hip replacement for more than 10 years in patients with Ficat stage III nontraumatic osteonecrosis of the femoral head.

Key words Femoral prosthesis Bipolar Endoprosthesis Cementless Osteonecrosis