Vitamin C demand is increased after total knee arthroplasty: a double-blind placebo-controlled-randomized study.
Knee Surg Sports Traumatol Arthrosc
; 27(4): 1182-1188, 2019 Apr.
Article
em En
| MEDLINE
| ID: mdl-29955932
ABSTRACT
PURPOSE:
This study was designed to determine whether perioperative supplementation of vitamin C (VC) improves range of motion (ROM) and reduces the risk of arthrofibrosis (AF) following total knee arthroplasty (TKA).METHODS:
Ninety-five patients undergoing TKA were randomized to either oral VC (1000 mg daily) or placebo for 50 days (48 VC group, 47 placebo group). The effect of VC supplementation was tested on ROM, AF, WOMAC, FJS-12, and VC plasma concentrations (VCc). VCc were analyzed in both patient groups before surgery, 4 and 7 days after surgery.RESULTS:
ROM at 1 year was not different between study groups. The prevalence of AF was 5 of 48 (10.4%) in the VC group compared to 11 of 47 (23.4%) in the placebo group (p = 0.09). VCc decreased post-operatively in the placebo group (49-12 µmol/l on day 7, p < 0.001), but not in the VC group (53-57 µmol/l). Patients with a perioperative drop of VCc ≥ 30 µmol/l developed significantly more AF at 1 year compared to patients with a VCc drop of < 30 µmol/l (p = 0.007).CONCLUSIONS:
TKA results in VC depletion. Perioperative VC supplementation prevents VCc drop in most patients undergoing TKA and may lower the incidence of AF. The clinical relevance of this study is that VC supplementation seems to be a cheap and safe adjunct to improve functional outcome after TKA. LEVEL OF EVIDENCE I. TRIAL REGISTRY The study was registered at the ISRCTN registry with study ID ISRCTN40250576.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cuidados Pós-Operatórios
/
Complicações Pós-Operatórias
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Ácido Ascórbico
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Artroplastia do Joelho
/
Articulação do Joelho
Tipo de estudo:
Clinical_trials
/
Risk_factors_studies
Limite:
Aged
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Aged80
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Knee Surg Sports Traumatol Arthrosc
Assunto da revista:
MEDICINA ESPORTIVA
/
TRAUMATOLOGIA
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Suíça