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Structuring of the study group. The study group consisted of 12 patients. Six of them had OA grade 3 on the Kellgren–Lawrence scale; 6 of them had OA grade 4. Within each group, 3 patients were treated with the SVF, and 3 patients were treated with the SVF and PRP. OA, osteoarthritis; SVF, stromal vascular fraction; PRP, platelet-rich plasma.
