[Uroflowmetric functional evaluation of modified Duplay procedure in hypospadias surgery].

We perform a modified Duplay procedure in our department without incision of the urethral plate for correction of distal hypospadias. The objective of this retrospective study was to analyse the long-term functional and aesthetic results of this technique. Strictures are a frequent complication of hypospadias surgery, but their frequency is often underestimated as they can remain asymptomatic. We decided to systematically detect urethral strictures by performing voiding uroflowmetry in all children over the age of 4 years, i.e. toilet trained, operated by Duplay procedure in our department. The results were compared to the standard results in paediatric populations published in the literature. The maximum flow rate was below the 5th percentile in 20% of cases and the average flow rate was abnormal in 30% of cases. Voiding uroflowmetry is a simple, noninvasive method to detect asymptomatic urethral strictures. Uroflowmetry is essential to evaluate the functional results of surgical procedures used for the treatment of hypospadias.