
Efficacy and Safety of Diclofenac Sodium Gel in Knee Osteoarthritis
OsteearthritisThis study will test the efficacy and safety of topical diclofenac sodium gel in the treatment of knee osteoarthritis.

Safety of Diclofenac Sodium Gel in Knee Osteoarthritis
OsteoarthritisThis study will test the efficacy and safety of topical Voltaren in the treatment of knee osteoarthritis.

A Study of MK0663 and an Approved Drug in the Treatment of Osteoarthritis (0663-077)(COMPLETED)...
OsteoarthritisThe purpose of this study is to compare the safety and effectiveness of an investigational drug and an approved drug in the treatment of osteoarthritis of the knee and hip.

Glucosamine/Chondroitin Arthritis Intervention Trial (GAIT)
OsteoarthritisThis study will determine whether glucosamine, chondroitin sulfate and/or the combination of glucosamine and chondroitin sulfate are more effective than placebo and whether the combination is more effective than glucosamine or chondroitin sulfate alone in the treatment of knee pain associated with osteoarthritis (OA) of the knee after six months of follow-up. These substances, marketed in the United States as dietary supplements, have been widely touted by the lay press and by anecdotal personal experience as effective in treating OA. To date, however, only a few small studies have been published in the worldwide literature. The study proposed herein has been carefully constructed to definitively determine the efficacy of these agents.

Study Of Celecoxib Or Diclofenac And Omeprazole For Gastrointestinal (GI) Safety In High GI Risk...
OsteoarthritisArthritis1 moreTo determine whether celecoxib is superior to combined therapy with diclofenac and omeprazole in the incidence of clinically significant upper and/or lower gastrointestinal (GI) events in high GI risk subjects with osteoarthritis and/or rheumatoid arthritis.

Absorption and Distribution of Glucosamine and Chondroitin
OsteoarthritisThe purpose of this study is to examine the way the dietary supplements glucosamine and chondroitin are absorbed and distributed throughout the body.

Shoe Modification and Knee Osteoarthritis
Knee OsteoarthritisThis trial will assess the ability of shoe inserts to relieve pain and disability in people with knee osteoarthritis (OA) in the inner (medial) aspect of the knee.

Tidal Lavage in Knee Osteoarthritis
OsteoarthritisKneeThis study compared the effects of tidal lavage (washing out) of the knee joint and an imitation lavage procedure in people with knee osteoarthritis. In tidal lavage, the doctor flushes out a knee joint with repeated injections of a mild salt solution, done under local anesthesia. Study participants had to meet standard criteria for diagnosis of osteoarthritis but could have low, medium, or high severity of x-ray changes indicating knee osteoarthritis. We performed the lavage procedure once, and did quarterly followups for 1 year. We permitted patients to use some other osteoarthritis treatments during the study, such as non-narcotic pain relievers, nonsteroidal anti-inflammatory drugs, and physical therapy.

Toward Better Outcomes in Osteoarthritis
OsteoarthritisThis study will determine if there is a difference between commonly used nonsteroidal anti-inflammatory drugs (NSAIDs) and acetaminophen (a pain-reliever that does not prevent inflammation) for treating knee pain in osteoarthritis (OA). The two main results we will look at are disease progression according to x-rays and disability over 3.5 years. Study participants with moderate knee OA and knee pain will continue taking their NSAID or stop taking their NSAID and start taking acetaminophen. Every 6 months we will send the participants questionnaires that ask about pain, medication use, and disability. We will take x-rays of the knees at the start of the study and again at the end of the study.

Doxycycline and OA Progression
OsteoarthritisThis study will determine whether doxycycline decreases the severity or rate of progression of osteoarthritis (OA) in the knee. Nonsteroidal anti-inflammatory drugs (NSAIDs) are the most popular agents used to treat OA, but elderly women, in whom OA is especially common, are at greatest risk of developing serious side effects from NSAIDs. Our study targets overweight middle-aged women who have OA in one knee. Half of the 432 study participants will receive the treatment (doxycycline) and half will receive a placebo (inactive pill). Treatment with doxycycline (or placebo) will last 30 months, and participants and researchers will not know who is receiving doxycycline and who is receiving placebo until the end of the study. We will look for narrowing of the joint space in the knee that was not affected by OA at the start of the study. Joint space narrowing is a sign of OA. We will also use questionnaires to evaluate participants' symptoms and functioning.