Fig. 2
From: In vivo bone regeneration assessment of offset and gradient melt electrowritten (MEW) PCL scaffolds
Photographs of the surgical procedures whereby two circular calvarial defects were created in the rat and subsequently filled with PTFE membrane to prevent soft tissue infiltration. Then MEW scaffolds were implanted into the defect site and the defect was closed in layers using sutures. The defects were subsequently left to heal for 4 and 8 weeks (Scale bar = 5 mm)