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European Journal of Orthopaedic Surgery & Traumatology

Erschienen in:

07.04.2024 | Original Article

Minimally invasive Chevron-Akin (MICA) osteotomies without Akin fixation in hallux valgus correction: a case series with 2-year follow-up

verfasst von: Gabriel Ferraz Ferreira, MSc, PhD, Gustavo Araujo Nunes, Gabriel Marques Pugliese, Mauro Cesar Mattos e Dinato, PhD, Thomas Lorchan Lewis, Gustavo Sato, João Paulo Pedroso, Miguel Viana Pereira Filho, MSc

Erschienen in: European Journal of Orthopaedic Surgery & Traumatology | Ausgabe 5/2024

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Abstract

Purpose

The minimally invasive Chevron-Akin (MICA) is considered the third generation of minimally invasive hallux valgus (HV) surgery, and its original description included fixation of the Akin osteotomy with a screw. The aim of this study is to evaluate a series of patients undergoing HV correction using the MICA technique without screw fixation of the Akin osteotomy.

Methods

We retrospectively evaluated 58 consecutive patients who underwent surgical correction for HV between August 2018 and March 2020. A total of 69 feet were evaluated with a minimum follow-up of 2 years. Clinical outcomes such as pain (VAS), function (AOFAS), range of movement, criteria personal satisfaction and complications were evaluated.

Results

The AOFAS score (mean ± standard deviation) significantly improved from 57.0 ± 8.6 preoperatively to 93.9 ± 8.7 postoperatively (p < .001) with a minimum follow-up of 2 years. The VAS score improved from 6.0 ± 1.8 preoperatively to 0.6 ± 1.4 at 2-year follow-up (p < .001), and the hallux valgus angle reduced from 39.7 ± 6.9 to 8.9 ± 9.0 (p < .001). The majority of patients (95.6%) reported the result as excellent or good, and the most common complication was the need to remove the screw (7.2%).

Conclusions

The use of MICA without Akin osteotomy fixation resulted in successful correction of hallux valgus with improvements in clinical and radiographic parameters.

Level of evidence

IV, case series.

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Titel: Minimally invasive Chevron-Akin (MICA) osteotomies without Akin fixation in hallux valgus correction: a case series with 2-year follow-up
verfasst von: Gabriel Ferraz Ferreira, MSc, PhD
Gustavo Araujo Nunes
Gabriel Marques Pugliese
Mauro Cesar Mattos e Dinato, PhD
Thomas Lorchan Lewis
Gustavo Sato
João Paulo Pedroso
Miguel Viana Pereira Filho, MSc
Publikationsdatum: 07.04.2024
Verlag: Springer Paris
Erschienen in: European Journal of Orthopaedic Surgery & Traumatology / Ausgabe 5/2024
Print ISSN: 1633-8065
Elektronische ISSN: 1432-1068
DOI: https://doi.org/10.1007/s00590-024-03924-8

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Minimally invasive Chevron-Akin (MICA) osteotomies without Akin fixation in hallux valgus correction: a case series with 2-year follow-up