About this trial
This study will examine the pain-relief efficacy and safety of L-arginine in knee OA patients.
Eligibility criteria
Qualifiers
Age between 40 and 80 years.
Knee OA according to the American College of Rheumatology (ACR) clinical criteria.
Knee pain lasting 3 months or longer and a score of 7 or greater on the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain subscale (standardized to range from 0-20).
Kellgren-Lawrence (KL) grade 2 or 3.
Disqualifiers
Any use of NSAIDs or other analgesics in the past two weeks.
History of injections of corticosteroids in the past three months or hyaluronic acid in the past 6 months in the index knee.
History of arthroscopy or open surgery in the index knee in the past 12 months.
History of a knee replacement in the index knee or planning to receive such a procedure within 3 months.
Trial design
Treatments tested in this trial
- L-arginine tablet
- Placebo tablet
Treatment groups
Sponsors and collaborators
Xiangya Hospital of Central South University
Lead sponsor
Massachusetts General Hospital
Collaborator
School of Medicine, University of Nottingham
Collaborator
Memorial University of Newfoundland
Collaborator