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Lee Swanson Research Update
Osteoarthritis Pain Reduced with Rosehips
May 2008
Extracts of rosehips appeared to reduce the pain associated with osteoarthritis by 37%, according to an analysis of three randomized controlled trials reported in the journal Osteoarthritis and Cartilage.
The researchers, from Denmark’s Frederiksberg Hospital, Copenhagen University Library, University of Copenhagen and the University of California, analyzed three different studies involving some 287 patients. They noted that “although based on a sparse amount of data, the results of the present meta-analysis indicate that rosehip powder does reduce pain.”
The reviewers, led by Professor Henning Bliddal, included randomized controlled trials only if they specifically randomized people suffering from osteoarthritis to either rosehip (hip powder of Rosa canina) or placebo. The primary outcome measure was pain reduction.
Three studies fulfilled the reviewers’ criteria: Warholm et al. (2003), Rein et al. (2004) and Winther et al. (2005). In total these studies followed 287 patients (145 patients receiving rosehip powder, 142 receiving placebo) for an average of three months.
An overall 37% reduction in pain scores was observed among the patients taking the rosehips powder. Study authors wrote: “In the present analysis of R. canina hip powder, the lack of heterogeneity (differences, variability) between studies gives credit to an efficacy. The results of the present meta-analysis—that R. canina hop powder does reduce pain—should be further substantiated in a large-scale (i.e., phase III) trial.”
Osteoarthritis and Cartilage, published online ahead of print
