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Aesthetic Plastic Surgery
Published in: Aesthetic Plastic Surgery 5/2019

01-10-2019 | Botulinum Toxin | Original Article

Effectiveness and Safety of Botulinum Toxin Type A Injection for Scar Prevention: A Systematic Review and Meta-analysis

Authors: Yin Wang, Jun Wang, Jinsong Zhang, Chao Hu, Fei Zhu

Published in: Aesthetic Plastic Surgery | Issue 5/2019

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Abstract

Background

The role of active scar prevention in postoperative scar management is important. Botulinum toxin type A (BTXA) has been shown to improve postoperative scars in the past decades. The aim of this systematic review and meta-analysis was to evaluate the effectiveness and safety of BTXA injection for scar prevention.

Methods

The authors searched the databases of Medicine, Embase, the Cochrane Library, Web of Science, and CINAHL from inception through November 2018 for randomized controlled trials (RCTs) reporting the use of BTXA in scar prevention. The outcomes were the visual analogue scale (VAS) score, Vancouver Scar Scale score, scar width, patient satisfaction and adverse events.

Results

A total of nine RCTs were identified in this systematic review and meta-analysis. The VAS score was significantly higher in the BTXA group than in the control group (weighted mean difference (WMD) = 1.32, 95% confidence interval (CI) = 1.06–1.58, P < 0.00001). The Vancouver Scar Scale score was significantly lower in the BTXA group (WMD = − 1.25, 95% CI = − 2.23 to − 0.26, P = 0.01). The scar width was also significantly smaller in the BTXA group (WMD = − 0.18, 95% CI = − 0.24 to − 0.12, P < 0.00001). There was a significant difference in terms of patient satisfaction between the BTXA group and the control group (relative risk (RR) = 1.38, 95% CI = 1.09–1.74, P = 0.007). Only two studies reported complications, and other studies reported no complications during the follow-up period.

Conclusions

This systematic review and meta-analysis demonstrates that BTXA injection can reduce scar width in wounds and improve the overall appearance of postoperative scars and suggests that BTXA may be a safety therapy for scar prevention.

Level of Evidence II

This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.​springer.​com/​00266.
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Metadata
Title
Effectiveness and Safety of Botulinum Toxin Type A Injection for Scar Prevention: A Systematic Review and Meta-analysis
Authors
Yin Wang
Jun Wang
Jinsong Zhang
Chao Hu
Fei Zhu
Publication date
01-10-2019
Publisher
Springer US
Keyword
Botulinum Toxin
Published in
Aesthetic Plastic Surgery / Issue 5/2019
Print ISSN: 0364-216X
Electronic ISSN: 1432-5241
DOI
https://doi.org/10.1007/s00266-019-01358-w

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