The primary objective of this study is to evaluate the relative efficacy of a centrally-acting analgesic (duloxetine) versus a peripherally acting analgesic (topical diclofenac) for pain and associated symptom management in knee osteoarthritis. Secondary objectives include the determination of which self-report and experimental pain measures best differentiate those who respond better to duloxetine than diclofenac.
This is a randomized, blinded, crossover, controlled study design comparing duloxetine and topical diclofenac for osteoarthritis pain. The study cohort will be individuals who have a confirmed diagnosis of knee osteoarthritis. Subjects will be randomized only after all entry criteria have been met. These individuals will be evaluated at baseline, and then followed longitudinally following enrollment.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Quantitative sensory testing and patient reported outcome measures used to assess patient pain phenotype
University of Michigan
Ann Arbor, Michigan, United States
Pain
Time frame: One month
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