354 vey on the acceptance of postoperative results analysis and surgical video analysis amongst surgeons performing RARP are shown. Most surgeons use postoperative results analysis to learn from their past performance. They use edited surgical videos during team meetings to gain insight into the specific facets (surgical steps) of RARP related to postoperative complications and functional outcomes (i.e. urinary continence and erectile function). The third part of the thesis focuses on the following research question: What is the relation between a surgeon’s performance and a patient’s postoperative outcomes? The group of Goldenberg et al. used the GEARS assessment method to assess specific sections of the RARP they found a possible correlation between surgical skills and postoperative outcome, mainly the early continence after RARP.58 The PROTEST, PACE42 and GEARS43 assessment methods have been evaluated in two matched case-control pilot studies to investigate if the results of these surgical skills assessment methods can be used to predict postoperative functional outcome (continence and potency). The results of these pilot studies are described in chapter 9 (continency study) and chapter 10 (potency study). In chapter 9 incontinent patients were matched to continent patients to assesses if the surgical skills as assessed using the different templates of one expert differed between the postoperative outcomes. A similar procedure was used in the study presented in chapter 10, impotent patients were compared to potent patients. These studies show none of the factors in the templated assessment methods could be used to predict the urinary continence or potency status of the patients. The results do show, in contrast to a study by the group of Stern et.al.59, experts are able to predict the postoperative continence or potency status of the patients. The results of both studies show expert focus on the quality of the neurovascular bundles in case of potency, and the length of the urethral stump after resection in case of urinary continence. Although the relation between urethral stump length measured in surgical videos and postoperative continence was not proven in earlier research60, the influence of the urethral measurements on continence was known from in earlier studies in MRI images61,62 and pathology results.63 The study presented in chapter 11 shows the results of a study correlating measurements of the urethral stump in pre-recorded videos to the postoperative continence of patients. In this study the dimensions of the transurethral catheter (Chr. 16) were used to standardise the measurements. The results of this study show the residual urethra stump was significantly longer in the continent group (10,50 vs 12,94 mm, p= 0.018). We are the first to demonstrate the relationship between the residual urethra
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