Pain Research and Management (Jan 2008)
Once-Daily, Controlled-Release Tramadol and Sustained-Release Diclofenac Relieve Chronic Pain due to Osteoarthritis: A Randomized Controlled Trial
Abstract
OBJECTIVE: The present study was a randomized, parallel, double-blind comparison between controlled-release (CR) tramadol and sustained-release (SR) diclofenac in patients with chronic pain due to osteoarthritis of the hips and/or knees.