Accessory instrumentation in flexible ureteroscopy: Evidence-based recommendation.

Instrumentation is the key to success in endourology. Indeed, endourology could be redefined as "enginurology" as the marriage between engineering and urology to develop instrumentation to improve patient outcomes is the key facilitator in the advancement of minimally invasive techniques. This review article will identify the evidence-base that supports our current recommendations for equipment used during ureteroscopy.