A recent article published in Sports Health examined the effects of ultrasound- guided aspiration, fenestration and injection for symptomatic popliteal cysts.
In this level 3 retrospective cohort study, 47 patients underwent aspiration of their popliteal cysts, fenestration of cyst walls and septations, as well as injection of 1ml of Kenalog + 2ml of .5% Bupivicaine. Mean WOMAC scores improved significantly from 48.55 to 17.15, with improvements also seen in pain, stiffness and physical function subcategories. There were 6 patients that needed reaspiration (12.7%), and 1 patient eventually underwent unicompartmental knee arthroplasty. No complications or infections were seen in any of the participants. The results of the study show ultrasound-guided aspiration, fenestration, and injection to be a potentially effective stand alone treatment modality of popliteal cysts, however more research and collaboration is needed to validate the results.
Article link: http://www.ncbi.nlm.nih.gov/m/pubmed/26502415/
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