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DOI: 10.1055/s-0045-1810403
Vitamina C na síndrome da dor complexa regional em pacientes com fratura distal do rádio
Vitamin C in Complex Regional Pain Syndrome in Patients with Distal Radius FractureSuporte Financeiro Os autores declaram que não receberam suporte financeiro de agências dos setores público, privado ou sem fins lucrativos para a realização deste estudo.

Resumo
Objetivo
Avaliar o efeito da vitamina C na prevenção da síndrome da dor complexa regional (SDCR) em pacientes com fratura da extremidade distal do rádio (FEDR).
Métodos
Foram incluídos pacientes com FEDR com indicação de tratamento cirúrgico e idade acima de 18 anos, sendo avaliados faixa etária, gênero, dominância, presença de comorbidades, lado acometido, mecanismo do trauma e técnica cirúrgica. Os participantes foram randomizados em dois grupos: placebo (N = 64), que recebeu celulose microcristalina, e intervenção (N = 58), que recebeu 1 g/dia de vitamina C, em dose única durante 60 dias, iniciando no pós-operatório imediato.
Resultados
A incidência de dor neuropática foi em média 17% maior no grupo placebo do que no grupo vitamina C nas semanas avaliadas (p = 0,008). A escala visual análoga (EVA) foi em média 1,22 pontos maior no grupo placebo independente do momento de avaliação (p = 0,001). A SDCR, em 12 e 24 semanas, foi estatisticamente mais frequente no grupo placebo (p = 0,014 e 0,007, respectivamente).
Conclusão
A vitamina C tem efeito na prevenção da dor neuropática e da SDCR, bem como no controle da dor pós-operatória.
Abstract
Objective
To evaluate the effect of vitamin C in preventing complex regional pain syndrome (CRPS) in patients with fracture of the distal end of the radius (FDER).
Methods
The present study included FDER patients with an indication for surgical treatment and aged over 18 years. We evaluated age group, gender, dominance, presence of comorbidities, affected side, trauma mechanism, and surgical technique. Participants were randomized into 2 groups: placebo (N = 64), which received microcrystalline cellulose, and intervention (N = 58), treated with 1 g/day of vitamin C in a single dose for 60 days, starting immediately after surgery.
Results
The incidence of neuropathic pain was on average 17% higher in the placebo group than in the vitamin C one during the evaluation period (p = 0.008). The average visual analog scale (VAS) for pain was 1.22 points higher in the placebo group regardless of the evaluation moment (p = 0.001). The CRPS at 12 and 24 weeks was statistically more frequent in the placebo group (p = 0.014 and 0.007, respectively).
Conclusion
Vitamin C has an effect on preventing neuropathic pain and CRPS, as well as on controlling postoperative pain.
Palavras-chave
ácido ascórbico - dor crônica - fraturas do rádio - síndrome da dor regional complexaContribuições dos Autores
Cada autor contribuiu individual e significativamente para o desenvolvimento deste artigo. FASA: confecção do projeto de pesquisa, avaliação dos pacientes, coletada dos dados, análise dos dados, redação do artigo, revisão e edição do artigo e também em todo o conceito intelectual do artigo; RMB: avaliação dos pacientes, coleta dos dados, análise dos dados, revisão do artigo; YAA: análise dos dados, confecção de todo o projeto de pesquisa, redação, revisão e edição do artigo e também em todo o conceito intelectual do artigo; PMMBF: análise dos dados, confecção do projeto de pesquisa, redação e revisão do artigo e também em todo o conceito intelectual do artigo; RBC análise dos dados, redação, revisão e edição do artigo.
Trabalho desenvolvido no Hospital do Subúrbio, Salvador, BA, Brasil.
Publikationsverlauf
Eingereicht: 20. Februar 2025
Angenommen: 22. Mai 2025
Artikel online veröffentlicht:
25. August 2025
© 2025. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution 4.0 International License, permitting copying and reproduction so long as the original work is given appropriate credit (https://creativecommons.org/licenses/by/4.0/)
Thieme Revinter Publicações Ltda.
Rua Rego Freitas, 175, loja 1, República, São Paulo, SP, CEP 01220-010, Brazil
Fernando Antonio Silva de Azevedo Filho, Roberta Muniz Blunck, Abdouni Y Ali, Patrícia Maria de Moraes Barros Fucs, Ricardo Britto Cotias. Vitamina C na síndrome da dor complexa regional em pacientes com fratura distal do rádio. Rev Bras Ortop (Sao Paulo) 2025; 60: s00451810403.
DOI: 10.1055/s-0045-1810403
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