Figure 4. (a) Equal amount of cartilage tissue and immature bone (arrow: chondroid tissue, arrow head: immature bone), 6 points (H-E, x100). (b) Immature bone and small amount of mature bone (black arrow head: immature bone, red arrow head: mature bone, blue arrow head: normal bone adjacent to the fracture zone), 9 points (H-E, x100).
