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1 Department of Internal Medicine, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
2 Osteoarthritis Research Unit, Department of Rheumatology, Hôf.pital Notre-Dame, Centre Hospitalier de lUniversité de Montréal, Montréal, Québec, Canada
Correspondence to:
Correspondence and reprint requests to:
Dr Imad W Uthman, American University of Beirut Medical Centre, PO Box: 1136044, Hamra, 1103 2090, Beirut, Lebanon;
iuthman{at}aub.edu.lb
The medical literature was reviewed from 19682002 using Medline and the key words "intra-articular" and "osteoarthritis" to determine the various intra-articular therapies used in the treatment of osteoarthritis. Corticosteroids and hyaluronic acid are the most frequently used intra-articular therapies in osteoarthritis. Other intra-articular substances such as orgotein, radiation synovectomy, dextrose prolotherapy, silicone, saline lavage, saline injection without lavage, analgesic agents, non-steroidal anti-inflammatory drugs, glucosamine, somatostatin, sodium pentosan polysulfate, chloroquine, mucopolysaccharide polysulfuric acid ester, lactic acid solution, and thiotepa cytostatica have been investigated as potentially therapeutic in the treatment of arthritic joints. Despite the lack of strong, convincing, and reproducible evidence that any of the intra-articular therapies significantly alters the progression of osteoarthritis, corticosteroids and hyaluronic acid are widely used in patients who have failed other therapeutic modalities for lack of efficacy or toxicity. As a practical approach for a knee with effusion, steroid injections should be considered while the presence of symptomatic "dry" knees may favour the hyaluronic acid approach. The virtual absence of serious side effects, coupled with the perceived benefits, make these approaches attractive.
Keywords: osteoarthritis; intra-articular therapy; corticosteroids; hyaluronic acid
Abbreviations: kD, kilodalton; MPA, methylprednisolone acetate; NaPP, sodium pentosan polysulfate; NSAIDs, non-steroidal anti-inflammatory drugs; WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index
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