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Modified onlay island flap versus tubularized incised plate urethroplasty for hypospadias reoperation

Zhu, Xiao-Jiang; Deng, Yong-Ji; Wang, Jun; Guo, Yun-Fei; Ge, Zheng

Department of Urology, Children’s Hospital of Nanjing Medical University, Nanjing 210008, China

Correspondence: Dr. YF Guo (guozhaoso@163.com) or Dr. Z Ge (273145993@qq.com)

Originally published: March 14, 2023 Received: November 7, 2022 Accepted: February 2, 2023


This study aimed to assess the outcomes of modified onlay island flap (MOIF) urethroplasty for hypospadias reoperation. A retrospective analysis was conducted using clinical data on children reoperated with MOIF or tubularized incised plate (TIP) urethroplasty for hypospadias in the Children’s Hospital of Nanjing Medical University (Nanjing, China) from December 2016 to September 2020. A total of 90 children with hypospadias who failed primary repair and were reoperated on with MOIF (MOIF group, n = 46) or TIP urethroplasty (TIP group, n = 44) were recruited. All children were postoperatively followed up for at least 6 months. Six patients with postoperative urinary fistula, 2 patients with glans dehiscence, and 1 patient with urethral diverticulum were reported in the MOIF group, while 7 patients with postoperative urinary fistula, 2 patients with urethral stricture, and 1 patient with glans dehiscence were reported in the TIP group. Postoperative infection, flap necrosis and other complications were not recorded. A total of 37 (80.4%) patients in the MOIF group and 34 (77.3%) patients in the TIP group were successfully reoperated. Although the success rates of MOIF and TIP urethroplasty are comparable, pediatricians should master different types of repair techniques for individualized hypospadias reoperation. MOIF urethroplasty can be recommended after failure of the primary repair.

Keywords: children; hypospadias; reoperation; urethroplasty

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Asian Journal of Andrology CN 31-1795/R ISSN 1008-682X  Copyright © 2023  Shanghai Materia Medica, Chinese Academy of Sciences.  All rights reserved.