313 Analysis of the video motion tracking system ‘Kinovea’ to assess surgical movements during robot-assisted radical prostatectomy. point had moved to a pixel in the surrounding tissue (figure 4B). Table 4 shows the automatic and manually calculated total path length, sudden instrument movements and average speed. The total path length and average speed manually calculated using formulas from Ganni, et al.’s article9 differed from the auTable 5 results of Patient Reported outcome Measures (PROMS) at 6 and 12 months postoperative in Arm 1, incontinent vs... continent. Postoperative incontinent patients (n=6) Median (min - max) Postoperative continent patients (n=6) Median (min - max) P-value Z-Value 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 6 months ICIQ score 15 (11 - 20) 0 (0 - 0) 0.027 -2.027 12 months ICIQ score 14 (12 - 17) 0 (0 - 0) 0.026 -2.232 Table 6 correlations between Kinovea measurements and postoperative Patient Reported outcome Measures (PROMS) at 6 and 12 months postoperative. Total path length (cm) Average speed (cm/s) Correlation p-value Correlation p-value 6 months postoperative IPSS score 0.035 0.913 0.311 0.324 12 months postoperative IPSS score 0.071 0.845 0.310 0.383 6 months ICIQ score 0.092 0.766 0.193 0.547 12 months ICIQ score 0.155 0.631 0.190 0.555 tomatically calculated results. The median difference in total path length was 16.10% and the median difference in average speed was 23.17%. This data has been summarized in box-and-whisker plots in figure 5A and figure 5B. Relation between Kinovea results and postoperative continence status When comparing the 6 and 12 months postoperative IPSS and 6 months postoperative EORTC QLQ-PR25 score the postoperative continent group had significantly lower IPSS scores and lower EORTC QLQ-PR25 scores at 6 and 12 months after surgery (Table 5). Based on the selection of patients the ICIQ score at 6 and 12 months after surgery also showed a significant difference. When correlating the results of the manual Kinovea calculations to the postoperative Patient Reported outcome Measures (PROMS (i.e. the IPSS scores, EORTC QLQPR25 scores, and ICIQ scores) no significant correlations were found (table 6).
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