Double-Cross Flap Protection: New Technique for Coverage of Neourethra in Hypospadias Repair

摘要

Purpose: We analyzed a new urethra preserving approach, double-cross flap protection, during tubularized incised plate urethroplasty. We compared the results of 57 patients treated with this new procedure and 80 patients treated with 2 different techniques.Materials and Methods: We studied 137 patients with hypospadias between October 2002 and March 2008. Patients were divided into 3 groups. Group 1 consisted of 40 patients (mean age 50 months) undergoing tubularized incised plate urethroplasty. Group 2 included 40 patients (mean age 48 months) undergoing tubularized ineised plate urethroplasty with dorsal subcutaneous flap. Group 3 consisted of 57 patients (mean age 39 months) undergoing tubularized incised plate urethroplasty with 2 de-epithelialized preputial flaps twisted ventrally and sutured individually over the neourethra. All patients were operated on by the same surgeons. Statistical analysis of postoperative complications was performed by ANOVA and chi-square test.Results: In Group 1 fistula developed in 6 patients (15%) and was associated with stenosis of the neourethra in 4 (10%). In Group 2 fistula developed in 4 patients (10%). In Group 3 no fistula was observed, but mild stenosis of the neomeatus developed in 3 patients (5.3%), which was treated with dilation. Thus, the incidence of fistula in group 3 was significantly less (p = 0.015).Conclusions: Double-cross flap protection is safe and significantly reduces the incidence of postoperative fistula.