A total of 268 children with primary vesicoureteral reflux underwent ureteral reimplantation by the Cohen transtrigonal technique. Bilateral reimplantation was done in 97% of the cases. Reimplantation was performed by a surgery resident assisted by a clinical fellow or senior consultant surgeon in 37% of the cases. Routine cystography and renal ultrasound were done in all patients postoperatively. Followup ranged from 6 months to 5 years (mean 10 months).