: In the field of Urology, flexible ureterorenoscopy (fURS) remains a challenging skill for junior residents to develop due to its steep learning curve. Hence, training models were incorporated into simulation-based training to allow for novice trainees to overcome the learning curve without potentially compromising patient outcomes and minimize complications. OBJECTIVE: To describe the design and test the validity of a non-biological three-dimensional (3D) model of the pelvocalyceal system as a tool for simulation-based training for flexible ureterorenoscopy. METHODS: This was a prospective, quasi-experimental, surgical innovation research stage 2a study conducted in a tertiary government hospital. The retrograde intrarenal surgery (RIRS) box was composed of four siliconized pelvocalyceal systems which were 3D printed using computed tomography urograms of actual patients. Thirty-two urologists were asked to perform flexible ureteroscopy using the RIRS box and were given a questionnaire to assess face and content validity using the Likert scale. RESULTS: The RIRS Box training model showed good face and content validity. The 3D printed pelvocalyceal system was judged to have a close anatomical resemblance to an actual calyceal system. While performing fURS, the RIRS box provided similar pelvocalyceal visualization and instrument handling as in an actual procedure. Majority of participants considered the training model useful for training (75%) and believed that it may improve the RIRS technique (46.8%). CONCLUSION The RIRS Box training model may help urologists improve the manner in which they acquire technical knowledge and skills necessary in performing fURS.
Ureteroscopy ; Ureteroscopes ; Printing, Three-Dimensional

This case report discusses penile strangulation caused by a ball bearing of a fidget spinner in a 9 year - old child. Initial examination revealed a 2 cm x 2 cm metallic ball bearing encircling the base of the penis with gross edema of the distal penile shaft and erythematous penile skin. To release the bearing, a modified string method was used. After removal, skin erosion was treated with debridement and applied with hydrocolloid dressing. Analysis and cross referencing of the case with literature suggest that successful extraction of a constricting object and treatment of penile strangulation, due to the varied nature, causes and effects of penile strangulation, greatly depends on immediate diagnosis and treatment. This spares one from immediate and long term complications, or necrosis with subsequent auto-amputation.