The objective of this study is to investigate if MRI can be used to evaluated effect of knee artery embolization for knee osteoarthritis. Participants be evaluated in clinic, obtain a knee MRI, undergo embolization of the symptomatic knee, and follow up in clinic at 1, 6, and 12 months after embolization. A second MRI is obtained 6 months after embolization. Participants will keep a record of their pain level and treatment and answer questionnaires at each visit. In addition, this study aims to determine the effects of knee artery embolization on the amount of opioid (pain reliever drugs) needed to manage osteoarthritis-associated pain and change in quality of life.
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Change in enhancement time intensity curves obtained from CE-MRI
Timeframe: change from baseline at 6 month post procedure
Change in Whole-Organ Magnetic Resonance Scoring (WORMS)
Timeframe: change from baseline at 6 month post procedure
Change in Multicenter Osteoarthritis Study (MOST) grading system for synovitis
Timeframe: change from baseline at 6 month post procedure
Number of participants with 50% reduction in pain scores
Timeframe: change from baseline at 1 month post procedure
Number of participants with 50% reduction in pain scores
Timeframe: change from baseline at 6 month post procedure
Number of participants with 50% reduction in pain scores
Timeframe: change from baseline at 12 month post procedure
Incidence of adverse events associated with GAE
Timeframe: 1 month post procedure
Incidence of adverse events associated with GAE
Timeframe: 6 month post procedure
Incidence of adverse events associated with GAE
Timeframe: 12 month post procedure