Fig. 1From: The repair of full-thickness articular cartilage defect using intra-articular administration of N-acetyl-d-glucosamine in the rabbit knee: randomized controlled trial a Representative images of the gross appearances at 4 and 12 weeks after operation. Circles indicate the repaired osteochondral defect area. b Quantitative scores of the gross appearance. # p < 0.01Back to article page