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QUESTION: In patients with osteoarthritis (OA), are glucosamine and chondroitin effective for relieving symptoms and improving function?
Studies were identified by searching Medline (1966 to June 1999) and the Cochrane Controlled Trials Register and reviewing bibliographies of reviews and manuscripts. Meeting abstracts published in supplements of Arthritis and Rheumatism, the British Journal of Rheumatology, and Osteoarthritis and Cartilage (1978–98) were handsearched. Authors, content experts, and drug manufacturers were contacted.
Studies in any language were selected if they were randomised, double blind, controlled trials that compared oral or parenteral glucosamine sulfate, glucosamine hydrochloride, or chondroitin sulfate with placebo for ≥4 weeks in patients with OA of the knee or hip. Studies also had to include ≥1 outcome measure from a list compiled by the reviewers.
2 reviewers assessed the quality of studies (14 item …
Source of funding: National Institutes of Health.
For correspondence: Dr T E McAlindon, The Arthritis Center, Boston University School of Medicine, 715 Albany Street, A203, Boston, MA 02118, USA. Fax +1 617 638 5239.
A modified version of this abstract also appears in Evidence-Based Nursing.