Overview Efficacy of Extended-release, Once Daily Tramadol for Post Operative Analgesia in Shoulder Arthroscopy Status: Terminated Trial end date: 2017-12-01 Target enrollment: Participant gender: Summary The investigators hypothesize that the use of tramadol will reduce pain and analgesic consumption after arthroscopic shoulder surgery. Phase: Phase 2 Details Lead Sponsor: Centre hospitalier de l'Université de Montréal (CHUM)Treatments: Tramadol