OperEX is an application designed by medical students, surgical residents and corrected by surgeons in various specialties. She is a student initiative Interest Group in surgical specialty of medicine program at Laval University.This application is primarily intended to better prepare their external medical internship in surgery. OperEX wants a quick and easily accessible resource that summarizes the basic surgical principles and the different surgical pathologies and procedures most frequently encountered in hospitals. This application is a summary of various manuals and surgical guides, scientific papers and clinical experience. It facilitates the fast and efficient learning by presenting straightforward information concisely.All documentation (text and images) is available offline. The videos require internet connection.