Fig. 1From: A collagen membrane for periosteal expansion osteogenesis using a timed-release system in rabbit calvariaImages of the surgical procedure. A and B Shape memory alloy (SMA) device fixation using absorbable thread. C Appearance after decortication at the original bone surface. D Collagen membrane used in the experimental group. E Membrane placed over an SMA device. F Periosteum closure over the membrane and SMA deviceBack to article page