The fabricated scaffold. (A) A 5-mm-diameter and 3-mm-thickness scaffold compared to a cent. (B) The SEM image of the pore distribution in the scaffold. (C) Varied pore diameters in different directions. (D) The potential for minimally invasive application; a, sample original shape; b, temporary shape at −18°C; c, 0 s at 37°C; d, 10 s at 37°C; e, 3 min at 37°C; from left to right, the samples are C80P300PH, C60P300PH, C40P300PH, C20P300PH, and C40P300HD, respectively. Color images available online at www.liebertpub.com/tec