Fig. 5From: Percutaneous endoscopic lumbar discectomy combined with platelet-rich plasma injection for lumbar disc herniation: analysis of clinical and imaging outcomesSchematic diagram of SCSA (indicated in red, b) and DPZ (indicated in white, a) measurements. Comparison of SCSA and DPZ on MRI preoperatively (A), 3 months (B) and 12 months r (C) postoperativelyBack to article page