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Efficacy Of Silicone Gel In Reducing Scar Formation After Hypospadias Repair: A Randomized Placebo-Controlled Trial

Authors Shirazi M, Mohammadi AA, Shamohammadi I, Mahboubi A, Makarem A

Received 28 July 2019

Accepted for publication 22 October 2019

Published 7 November 2019 Volume 2019:11 Pages 291—298

DOI https://doi.org/10.2147/RRU.S224660

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Justinn Cochran

Peer reviewer comments 3

Editor who approved publication: Dr Jan Colli


Mehdi Shirazi,1 Ali Akbar Mohammadi,2 Iman Shamohammadi,3 Amirhassan Mahboubi,4 Alireza Makarem3

1Department of Urology, Shiraz University of Medical Science, Shiraz, Iran; 2Burn & Wound Healing Research Center, Division of Plastic & Reconstruction Surgery, Department of Surgery, Shiraz University of Medical Science, Shiraz, Iran; 3Resident of Urology, Shiraz University of Medical Science, Shiraz, Iran; 4Professor of Urology, Fellowship in Pediatric Urology, Department of Urology, Tehran Children’s Hospital, Tehran, Iran

Correspondence: Iman Shamohammadi
Department of Urology, Shiraz University of Medical Science, Shiraz, Iran
Email imanshamohammadi@yahoo.com

Background: Hypospadias is one of the most common congenital disorders of the urogenital system that is repaired by surgical method. Literature review shows that silicone gel is effective in preventing and improving hypertrophic scars after surgery. Thus, we conducted this study to evaluate the effect of silicone gel on scar reduction after surgical repair of hypospadias.
Materials and methods: In this randomized double-blind clinical trial, 64 patients who had undergone surgical repair of hypospadias were divided into two groups: 32 patients in the intervention group (silicone gel) and 32 in the control group (placebo). Then, the patients in the silicone gel treatment group were treated twice per day for two months on the site of surgical wound, and the patients in the control group were treated with Vaseline twice per day for two months on the site of surgical wound, too. Scar characteristics (pigmentation, vascularity, pliability, and height) were recorded based on Vancouver’s scars scale. Finally, the results of the two treatments on reduction of scars after surgical repair were compared between the two groups. Data were analyzed using SPSS-24.
Results: There were significant differences between the two groups in scar characteristics after surgical repair of hypospadias, such as vascularity, pliability, and height (P˂0.05); however, there was no significant difference in pigmentation (P>0.05).
Conclusion: The results of this study showed that silicone gel had considerable effects on reduction of scars after surgical repair of hypospadias. However, further studies with larger sample size are recommended to confirm our conclusion.

Keywords: hypospadias, silicone gel, scar


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