Fig. 4From: Regenerative effects of platelet-rich plasma releasate injection in rabbit discs degenerated by intradiscal injection of condoliaseMagnetic resonance imaging (MRI) grading scores. MRI was performed 16 weeks after condoliase injection and 12 weeks after saline and platelet-rich plasma (PRP)-releasate injections. a Representative sagittal images of MRI. b MRI grading scores using the modified Pfirrmann grading system [20]. Data are presented as mean ± standard error of the mean (SEM). Non-injection control, n = 11 discs; saline, n = 11 discs; PRPr, n = 11 discs. **P < 0.01Back to article page