Patient selection and data collection
Five hundred thirty-five patients who underwent RRP between June 2015 and June 2019 were evaluated. Patients who had a history of pelvic radiotherapy, urethral intervention, overactive bladder and / or neurogenous bladder and who used drugs that could affect continence were excluded from the study. The remaining 476 patients were included in the study. Patients were divided into two groups according to the VUA technique: patients who underwent four focal VUA (12-, 3-, 6-, and 9-o’clock positions) (group I) and patients who underwent six focal VUA (12-, 2-, 4-, 6-, 8- and 10-o’clock positions) (group II). There were 288 patients in group I and 188 patients in group II. The flow chart of the study is shown in Figure 1 . All data were collected retrospectively from the hospital database. Demographic, perioperative and postoperative data and functional results of the two groups were recorded and analyzed.