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RDQ at baseline and Post 12 M. RDQ scores at baseline and Post 12 M among the groups classified by 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. CS, corticosteroid; RDQ, Roland–Morris Disability Questionnaire; PRPr, platelet-rich plasma releasate; HIZ, high-intensity zone. * p < 0.05 between the groups.
