Effects of Polylactide Copolymer Implants and Platelet-Rich Plasma on Bone Regeneration within a Large Calvarial Defect in Sheep

Figure 4

Ovine calvarial specimen (A), transverse cross sections of filled craniectomy ((B) and (C)), microtomographic images of peripheral part (D) and central part (E) of filled craniectomy, and microphotographs of peripheral part (F) and central part (G) of filled craniectomy (200x, Masson’s trichrome). DM: dura mater; S: suture; PM: polylactide membrane; B: calvarial bone; NB: newly formed bone in filled craniectomy; Δ: interface of newly formed bone and craniectomy edge; BT: bone trabecula; IBT: immature bone tissue; CT: connective tissue; PLA: polylactide.