Single-stage versus staged interposition urethroplasty for glandular hypospadias with severe penile curvature: 15-year experience

Purpose Our study examined the benefit of an alternative interposition urethroplasty (IU) procedure for glandular hypospadias (GH) with severe penile curvature (SPC). The technique involved transecting and reconstructing the urethra to preserve the distal glandular and coronal urethra and correct the curvature. We compared procedural characteristics, outcomes, and surgical complications for the single-stage and staged IU techniques. Methods We retrospectively studied 44 patients with GH with SPC who underwent single-stage or staged IU between March 2005 and June 2020. Demographics, operative details, complications, and uroflometry findings were analyzed. Results The median age at initial surgery was 37.5 months. Ten patients underwent single-stage IU repair, and 34 patients underwent staged IU repair. The median length of the interposition neourethra was 3.2 cm (2.2–4.3). The median follow-up duration was 58 months, and the overall complication rate was 13.6%. Complications were noted in 30% (3/10) and 8.8% (3/34) of patients in the single-stage and staged IU groups, respectively ( p > 0.05). Fistula formation was noted in one and three patients in the single-stage and staged groups, respectively (8.8% vs. 10%, p > 0.05). Two cases of urethral stricture were documented in the single-stage group only. No chordee recurrence or urethral diverticula was noted in any of the patients. Conclusion IU is a reliable and durable technique for GH with SPC. It avoided penile shortening, preserved the distal urethra, and reduced the risk of chordee recurrence. The staged IU technique had more superior outcomes compared to the single-stage IU technique.