311 Analysis of the video motion tracking system ‘Kinovea’ to assess surgical movements during robot-assisted radical prostatectomy. membranous urethral length. The preoperative Patient Reported outcome Measures, i.e. ICIQ-SF, IPSS and EORTC QLQ-PR25 also showed no difference between the incontinent and continent group. Results of automated surgical movements assessment using Kinovea. Every surgical video was tracked from the opening of the peritoneum to the completion of the bladder-urethra anastomosis. Of the median duration of the surgery (81.00 minutes), only a median length of 18.22 minutes of the video could be tracked (median 21.74%) (Table 3). Figure 3 shows an example of a trajectory of the movements of the Mono-polar Curved Scissors tracked using Kinovea. Table 1: Baseline characteristics of the selected patients Characteristics Postoperative incontinent patients (n=6) Median (min - max) Postoperative continent patients (n=6) Median (min - max) P-value Z-Value Age (years) 64 (57 - 67) 62.5 (53 - 66) 0.674 -0.420 Body Mass Index (kg/ m2) 26.86 (20.45 – 32.55) 25.99 (22.50 – 32.11) 0.917 -0.105 Prostate size (ml) 50 (39 - 81) 38 (35 - 82) 0.225 -1.214 Gleason score 7 (6 - 8) 6 (6 - 7) 0.157 -1.414 Membranous urethral length (mm) 11.07 (8.69 – 13.10) 13.58 (10.48 – 16.15) 0.273 -1.095 Surgery date, median (IQR) 15-02-2014 (02-022013 – 15-03-2015) 27-04-2014 (06-12-2012 – 29-01-2015 0.600 -0.524 Preoperative IPSS score 3 (0 - 7) 2.5 (0 – 8.5) 0.892 -0.135 6 months postoperative IPSS score 15 (0 - 19) 3 (0 - 5) 0.042 -2.032 12 months postoperative IPSS score 10 (6 - 16) 2 (0 - 5) 0.043 -2.023 Preoperative ICIQ score 0 (0 - 0) 0 (0 - 0) 1.000 0.000 6 months ICIQ score 15 (11 - 20) 0 (0 - 0) 0.027 -2.207 12 months ICIQ score 14 (12 - 17) 0 (0 - 0) 0.026 -2.232 Table 3: Total time analysed, duration of the surgery, percentage of surgery analysed, Automatic and calculated total path length in cm, difference in total path length in %, number of sudden movements and average speed. Median Min Max Total time analysed (minutes) 18,22 8,13 27,05 Duration of the surgery (minutes) 81,00 57,00 99,00 Percentage of surgery analysed (%) 21,74 14,26 29,73
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