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Minimally Invasive Chevron-Akin for Correction of Moderate and Severe Hallux Valgus Deformities: Clinical and Radiologic Outcomes With a Minimum 2-Year Follow-up.

Publication ,  Journal Article
de Carvalho, KAM; Baptista, AD; de Cesar Netto, C; Johnson, AH; Dalmau-Pastor, M
Published in: Foot Ankle Int
October 2022

BACKGROUND: The minimally invasive chevron-Akin (MICA) technique has already demonstrated efficacy compared with other known surgical treatments for mild to moderate hallux valgus (HV). MICA combines percutaneous osteotomies with the benefits of modern, rigid internal fixation. The aim of study was to evaluate the radiographic parameters, clinical improvement, and potential complications in moderate to severe HV cases, operated using the MICA technique. METHODS: Retrospective study including 70 feet with HV operated using the MICA technique. The AOFAS hallux MTP-IP score and radiographics for HV evaluation were applied preoperatively, and after 6 months, 1 year, and 2 years of follow-up. The following radiographic parameters were measured: metatarsophalangeal hallux valgus angle (HVA), distal metatarsal articular angle (DMAA), interphalangeal angle (IPA), and intermetatarsal angle (IMA). RESULTS: The average preoperative VAS pain score was 8.2 ± 1.5, which improved to 1.2 ± 2.2 at 24 months. The mean preoperative IMA was 14.8 ± 3.6 degrees compared with a mean of 7.5 ± 2.1 degrees (P < .01) at 24 months. The preoperative HVA value averaged 30.4 ± 9.8 degrees and at 6 months postoperatively 11.1 ± 6.8 degrees (P < .01), which remained stable until measured at 24 months. The mean preoperative DMAA was 16.3 ± 8.6 degrees and at the 6-month follow-up was 7.8 ± 5.4 degrees (P < .01). The mean preoperative IPA was 7.63 ± 4.4 degrees compared with a mean of 6.28 ± 3.5 degrees (P > .05) at 24 months. Complications included painful hardware (14.28%), neuropathic pain (2.85%), and loss of correction (4.28%). CONCLUSION: In this retrospective review from a single center, we found the MICA technique to be an effective procedure for correcting moderate to severe HV, with a low rate of recurrence and an acceptable rate of complications. Patients undergoing the surgical procedure in our series showed a significant reduction in radiographic parameters and a significant improvement in clinical scores, maintaining these results over time. LEVEL OF EVIDENCE: Level IV, retrospective study.

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Published In

Foot Ankle Int

DOI

EISSN

1944-7876

Publication Date

October 2022

Volume

43

Issue

10

Start / End Page

1317 / 1330

Location

United States

Related Subject Headings

  • Treatment Outcome
  • Retrospective Studies
  • Radiography
  • Orthopedics
  • Metatarsal Bones
  • Humans
  • Hallux Valgus
  • Follow-Up Studies
  • Bunion
  • 4207 Sports science and exercise
 

Citation

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de Carvalho, K. A. M., Baptista, A. D., de Cesar Netto, C., Johnson, A. H., & Dalmau-Pastor, M. (2022). Minimally Invasive Chevron-Akin for Correction of Moderate and Severe Hallux Valgus Deformities: Clinical and Radiologic Outcomes With a Minimum 2-Year Follow-up. Foot Ankle Int, 43(10), 1317–1330. https://doi.org/10.1177/10711007221114123
Carvalho, Kepler Alencar Mendes de, Andre Donato Baptista, Cesar de Cesar Netto, Anne H. Johnson, and Miki Dalmau-Pastor. “Minimally Invasive Chevron-Akin for Correction of Moderate and Severe Hallux Valgus Deformities: Clinical and Radiologic Outcomes With a Minimum 2-Year Follow-up.Foot Ankle Int 43, no. 10 (October 2022): 1317–30. https://doi.org/10.1177/10711007221114123.
de Carvalho KAM, Baptista AD, de Cesar Netto C, Johnson AH, Dalmau-Pastor M. Minimally Invasive Chevron-Akin for Correction of Moderate and Severe Hallux Valgus Deformities: Clinical and Radiologic Outcomes With a Minimum 2-Year Follow-up. Foot Ankle Int. 2022 Oct;43(10):1317–30.
de Carvalho, Kepler Alencar Mendes, et al. “Minimally Invasive Chevron-Akin for Correction of Moderate and Severe Hallux Valgus Deformities: Clinical and Radiologic Outcomes With a Minimum 2-Year Follow-up.Foot Ankle Int, vol. 43, no. 10, Oct. 2022, pp. 1317–30. Pubmed, doi:10.1177/10711007221114123.
de Carvalho KAM, Baptista AD, de Cesar Netto C, Johnson AH, Dalmau-Pastor M. Minimally Invasive Chevron-Akin for Correction of Moderate and Severe Hallux Valgus Deformities: Clinical and Radiologic Outcomes With a Minimum 2-Year Follow-up. Foot Ankle Int. 2022 Oct;43(10):1317–1330.
Journal cover image

Published In

Foot Ankle Int

DOI

EISSN

1944-7876

Publication Date

October 2022

Volume

43

Issue

10

Start / End Page

1317 / 1330

Location

United States

Related Subject Headings

  • Treatment Outcome
  • Retrospective Studies
  • Radiography
  • Orthopedics
  • Metatarsal Bones
  • Humans
  • Hallux Valgus
  • Follow-Up Studies
  • Bunion
  • 4207 Sports science and exercise