Purpose: This study aims to compare the effects of ventral lengthening (VL) versus ventral lengthening combined with dorsal plication (VL + DP) techniques on penile length in hypospadias.
Materials and Methods: Clinical data were retrospectively collected from patients who underwent hypospadias repairs with urethral plate transection between March 2017 and June 2023. Patients were divided into VL group and VL + DP group based on the curvature correction techniques. Two novel parameters—penile lengthening ratio (PLR) and curvature-adjusted penile lengthening ratio (CPLR)—were introduced to evaluate the effectiveness of penile lengthening.
Results: A total of 103 male patients with hypospadias and severe ventral curvature were included. In patients with a curvature degree after degloving (CDAD) greater than 45°, the CPLR was significantly higher in the VL group compared to that in the VL + DP group (0.0101 ± 0.0028 vs 0.0085 ± 0.0024, p = 0.026). Among patients with proximal hypospadias, the CPLR in the VL group was significantly higher than that in the VL + DP group (0.0106 ± 0.0024 vs 0.0093 ± 0.0026, p = 0.041).
Conclusions: In patients with CDAD > 45° or proximal hypospadias, VL demonstrated superior penile elongation compared to VL + DP.
Keywords: Hypospadias; Curvature correction; Urethral plate transection; Ventral lengthening; Dorsal plication; Penile length
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