Overview Pregabalin, Celecoxib, Total Knee Arthroplasty and Intrathecal Morphine Status: Completed Trial end date: 2010-10-01 Target enrollment: Participant gender: Summary To evaluate whether pregabalin and/or celecoxib could improve analgesic efficacy of intrathecal morphine for patients after total knee arthroplasty. Phase: Phase 4 Details Lead Sponsor: Chulalongkorn UniversityCollaborators: Bhumibol Adulyadej HospitalKing Chulalongkorn Memorial HospitalTreatments: AnestheticsCelecoxibMorphinePregabalin