OBJECTIVES To assess clinical follow-up data over 24 months using the standardized tined lead implantation technique, comparing the use of the curved vs straight stylet. PATIENTS AND METHODS Single tertiary center, prospective study (August 2013 - June 2015) involving 40 patients with overactive bladder and 15 with non-obstructive urinary retention refractory to first-line treatment. PRIMARY OUTCOME successful tined lead procedure; intention to treat analysis at 12 and 24 months. Secondary outcome: number of optimal electrode configurations during programming. Statistical analysis was performed by plain non-parametric tests for numeric and categorical data. RESULTS 33/35 (94%) patients implanted with the curved stylet had a successful tined lead procedure versus 13/20 (65%) implanted with the straight stylet (p=0.005). Intention to treat analysis at 12 and 24 months was 94% and 91% for the patients with the curved stylet compared to 65% and 45% for those with the straight stylet (p=0.002 and p<0.001). 60% and 25% of the electrode configurations in the curved group were considered optimal and bad in comparison to 40% and 37% in the straight group (p<0.001). The main limitation is the non-randomized study design. CONCLUSIONS The use of the standardized implantation technique with the curved stylet leads to more successful tined lead procedures, better success rates after 2-years follow-up and more optimal electrode configurations when compared to use of the straight stylet placement. This article is protected by copyright. All rights reserved.