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. 2022:8:32.
doi: 10.1051/sicotj/2022032. Epub 2022 Aug 15.

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

Remy Coulomb  1 , Jad Mansour  1 , Jérome Essig  2 , Gérard Asencio  1 , Pascal Kouyoumdjian  3
Affiliations

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

Remy Coulomb et al. SICOT J. 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.

Keywords: ABG 2; ABG II; HA; Hip arthroplasty; Hydroxyapatite coating; THR; Uncemented.

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Figures

Figure 1
Figure 1
Participant flowchart.
Figure 2
Figure 2
Survivorship of implants with revision surgery for any reason using Kaplan-Meier.
Figure 3
Figure 3
Survivorship aseptic loosening of aseptic loosening using Kaplan-Meier.
Figure 4
Figure 4
Survivorship of femoral stem aseptic loosening using Kaplan-Meier.
Figure 5
Figure 5
Radiological patterns at bone-implant interface. The cross-hatched area of the stem corresponds to the hydroxyapatite-coated area.
Figure 6
Figure 6
Cortical hypertrophy observed in zone 4. The white arrow shows stress shielding on the tip of the stem.
See this image and copyright information in PMC

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