Fig. 3From: A specific protocol of autologous bone marrow concentrate and platelet products versus exercise therapy for symptomatic knee osteoarthritis: a randomized controlled trial with 2 year follow-upAverage clinical outcome scores with standard deviation bars. Significant differences from baseline **p < .01, for a VAS; b KSS-knee score; c KSS-function score; and d SF-12 PhysicalBack to article page