Original Article

Clinical results at 10 years of minimum follow-up with the ABG 2 hip arthroplasty, matched with ceramic-on-ceramic bearings

¹ University Hospital of Nîmes, Rue du Pr. Robert Debré, 30029 Nimes cedex 9, France
² Clinique Médipole-Garonne, 45, rue Gironis, 31036 Toulouse cedex 1, France
³ Laboratory of Mechanics and Civil Engineering (LMGC), CNRS-UM1, 860 Rue de St-Priest, 34090 Montpellier, France
⁴ Université Montpellier 1, 2 Rue de l’École de Médecine, 34090 Montpellier, France

^* Corresponding author: coulomb.remy@neuf.fr

Received: 15 March 2022
Accepted: 27 June 2022

Abstract

Introduction: The current study aimed as a primary goal is to assess the results of a ceramic-on-ceramic (CoC) bearing hip system matched with ABG (Anatomic Benoist Girard) 2 components in terms of survivorship. Secondary objectives addressed specifically ceramic-related complications as well as specific patterns at the bone-implant interface. Material and methods: This is a retrospective bicentric continuous series involving 147 patients (95 males vs. 52 females) who underwent ABG 2 arthroplasties with CoC bearings. One hundred and twenty-five hips were closely followed-up at a mean period of 11.3 years. Results and discussion: With a mean follow-up of 11.3 years, nine cases (5.7%) underwent revision surgery, four caused by acetabular aseptic loosening, three by deep infections, one ceramic head fracture, and one femoro-acetabular impingement. The global survivorship was 92.2% at 12.7 years. The Harris Hip Score (HHS) mean scores increased post-operatively from 50.1 up to 96.1 points (p < 0.001). All stems featured patterns of radiological osseous integration onto the hydroxyapatite (HA)-coated zones. No radiological wear or osteolysis of ceramic bearings was demonstrated however, five patients reported hip squeaking using this bearing. This study demonstrated excellent results at mid-term follow-up in patients younger than 70 years of age using cementless ABG 2 components coupled with CoC bearings with no increase in complication rate.