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. 2022 Aug;28(6):745-749.
doi: 10.1016/j.fas.2021.09.004. Epub 2021 Sep 17.

Corin ankle arthroplasty: Case-series

Daniel Baumfeld  1 , Tiago Baumfeld  2 , Ricardo Fernandes Rezende  3 , André Vitor Lemos  4 , Caio Nery  5
Affiliations

Corin ankle arthroplasty: Case-series

Daniel Baumfeld et al. Foot Ankle Surg. 2022 Aug.

Abstract

Background: Total Ankle Arthroplasty (TAA) is complex and can bring a wide variety of complications. Implant revision rates can vary from 4% to 8% in 5 years. Recent publications have shown good results in the short and intermediate follow-up and high patient satisfaction. The pre- and postoperative evaluation of these patients should include physical examination and objective radiographic measurements, which may have predictive value for implant failures and survivorship. In this paper we will present the results obtained with 29 patients treated with the Zennith (Corin Group, UK) total ankle prosthesis in Brazil.

Methods: This paper presents the results obtained with 29 patients treated with the Corin-Zennith prosthesis in three tertiary hospitals in Brazil, with an average follow-up of 5 years. The patients were submitted to clinical and radiographic evaluation. There were seventeen women and twelve men, ranging in age from 35 to 76 years, who were submitted to surgical treatment between January 16, 2013 and May 5, 2017.

Results: Seven patients (24%) presented cysts, being 4 (13.7%) tibial cysts and 3 (10.3%) tibial and talar cysts. Six patients (20.6%) presented talar subsidence and 3 (10.3%) presented tibial subsidence. Three patients (10.3%) presented component wear. VAS reduced and AOFAS and ROM increased in the post-operative period. The development of Cysts was associated with the theta angle and the difference in LTS (between the post and preoperative period) was associated with tibial subsidence. The complications rate was 44.8%, the revision rate was 6.9% and the survivorship rate was 93.1%.

Conclusion: The Corin-Zennith prosthesis demonstrated to be a safe implant for improving functional parameters. Functional outcomes were not influenced for most commonly measured radiographic parameters. Further studies are needed to better understand these associations.

Keywords: Ankle arthritis; Ankle arthroplasty; Ankle joint pain; Ankle joint replacement; Tibio-talar joint; Total ankle.

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