Overview Efficacy of Preoperative Intravenous Dexamethasone in Primary Total Knee Arthroplasty Status: Completed Trial end date: 2016-06-01 Target enrollment: Participant gender: Summary To determine efficacy of preoperative IV dexamethasone for postoperative pain control after TKA. Phase: Phase 4 Details Lead Sponsor: Thammasat UniversityTreatments: BB 1101DexamethasoneDexamethasone 21-phosphateDexamethasone acetate