Overview The Efficacy of Diclofenac Gel for Breakthrough Pain and the Neuropathic Components of Pain in Knee Osteoarthritis Status: Completed Trial end date: 2012-12-01 Target enrollment: Participant gender: Summary The purpose of this proposed study is to conduct a trial with knee osteoarthritis (OA) patients using the diclofenac gel. Phase: Phase 4 Details Lead Sponsor: Brigham and Women's HospitalCollaborator: Endo PharmaceuticalsTreatments: Diclofenac