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Patients with osteoarthritis of the knee are commonly treated by physical therapists. Practice should be informed by updated evidence from systematic reviews. The purpose of this article is to summarize the evidence from systematic reviews on the effectiveness of physical therapy for patients with knee osteoarthritis. Systematic reviews published between 2000 and 2007 were identified by a comprehensive literature search. We graded the quality of evidence across reviews for each comparison and outcome. Twenty-three systematic reviews on physical therapy interventions for patients with knee osteoarthritis were included. There is high-quality evidence that exercise and weight reduction reduce pain and improve physical function in patients with osteoarthritis of the knee. There is moderate-quality evidence that acupuncture, transcutaneous electrical nerve stimulation, and low-level laser therapy reduce pain and that psychoeducational interventions improve psychological outcomes. For other interventions and outcomes, the quality of evidence is low or there is no evidence from systematic reviews.

An increasing number of systematic reviews are available regarding nonpharmacological and nonsurgical interventions for hip osteoarthritis (OA). The objectives of this article are to identify high-quality systematic reviews on the effect of nonpharmacological and nonsurgical interventions for hip OA and to summarize available high-quality evidence for these treatment approaches. The authors identified and screened 204 reviews. Two independent reviewers using a previously pilot-tested quality assessment form assessed the full text of 58 reviews. Six reviews were of sufficient high quality and could be included for further analyses. There was moderate-quality evidence that acupuncture and diacerein have no effect on pain and function. There was low-quality evidence that strengthening exercises and avocado/soybean unsaponifiables reduce pain and that diacerein decreases radiographic OA progression. There was insufficient high-quality evidence regarding nonpharmacological and nonsurgical interventions for hip OA, and further primary studies and reviews are needed.