Several individual RCTs demonstrated clinical ly important improvements in pain and disability with aerobic exercise .
Other PT interventions demonstrated no sustained benefit .
Individual RCTs showed similar benefits with aerobic , aquatic , and strengthening exercise .
Adverse events were uncommon and did not deter participants from continuing treatment .
Low-strength evidence suggested that only a few PT interventions were effective .
BACKGROUND Osteoarthritis is a leading cause of disability .
Nonsurgical treatment is a key first step .
PURPOSE Systematic literature review of physical therapy ( PT ) interventions for community-dwelling adults with knee osteoarthritis .
Physical therapy treatment effectiveness for osteoarthritis of the knee: a randomized comparison of supervised clinical exercise and manual therapy procedures versus a home exercise program.
BACKGROUND AND PURPOSE Manual therapy and exercise have not previously been compared with a home exercise program for patients with osteoarthritis ( OA ) of the knee . The purpose of this study was to compare outcomes between a home-based physical therapy program and a clinical ly based physical therapy program . SUBJECTS One hundred thirty-four subjects with OA of the knee were r and omly assigned to a  clinic treatment group ( n=66 ; 61 % female , 39 % male ; mean age [+/-SD]=64+/-10 years ) or a home exercise group ( n=68 , 71 % female , 29 % male ; mean age [+/-SD]=62+/-9 years ) . METHODS Subjects in the clinic treatment group received supervised exercise , individualized manual therapy , and a home exercise program over a 4-week period . Subjects in the home exercise group received the same home exercise program initially , reinforced at a clinic visit 2 weeks later . Measured outcomes were the distance walked in 6 minutes and the Western Ontario and McMaster Universities Osteoarthritis Index ( WOMAC ) . RESULTS Both groups showed clinical ly and statistically significant improvements in 6-minute walk distances and WOMAC scores at 4 weeks ; improvements were still evident in both groups at 8 weeks . By 4 weeks , WOMAC scores had improved by 52 % in the clinic treatment group and by 26 % in the home exercise group . Average 6-minute walk distances had improved about 10 % in both groups . At 1 year , both groups were substantially and about equally improved over baseline measurements . Subjects in the clinic treatment group were less likely to be taking medications for their arthritis and were more satisfied with the overall outcome of their rehabilitative treatment compared with subjects in the home exercise group . DISCUSSION AND CONCLUSION Although both groups improved by 1 month , subjects in the clinic treatment group achieved about twice as much improvement in WOMAC scores than subjects who performed similar unsupervised exercises at home . Equivalent maintenance of improvements at 1 year was presumably due to both groups continuing the identical home exercise program . The results indicate that a home exercise program for patients with OA of the knee provides important benefit . Adding a small number of additional clinical visits for the application of manual therapy and supervised exercise adds greater symptomatic relief
Several individual RCTs demonstrated clinical ly important improvements in pain and disability with aerobic exercise .
Other PT interventions demonstrated no sustained benefit .
Individual RCTs showed similar benefits with aerobic , aquatic , and strengthening exercise .
Adverse events were uncommon and did not deter participants from continuing treatment .
Low-strength evidence suggested that only a few PT interventions were effective .
BACKGROUND Osteoarthritis is a leading cause of disability .
Nonsurgical treatment is a key first step .
PURPOSE Systematic literature review of physical therapy ( PT ) interventions for community-dwelling adults with knee osteoarthritis .