Fig. 4From: Design and evaluation of nano-hydroxyapatite/poly(vinyl alcohol) hydrogels coated with poly(lactic-co-glycolic acid)/nano-hydroxyapatite/poly(vinyl alcohol) scaffolds for cartilage repairThe stress and strain cerves (a). The tensile stress and strain curves (b). The ultimate compressive stress of each group (c). The ultimate tensile stess of each group (d)Back to article page