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ODI at baseline and Post 12 M. ODI at baseline and Post 12 M among the groups classified by the image characteristics of the targeted discs, including (a) number of targeted discs, (b) modified Pfirrmann grading, (c) Modic changes, (d) disc bulge, (e) anterior HIZ, (f) posterior HIZs, and (g) treatment group. ODI, Oswestry Disability Index; CS, corticosteroid; PRPr, platelet-rich plasma releasate; HIZ, high-intensity zone. ** p < 0.05 between the groups.
