Fig. 4. (A) Histological findings of the fracture site (hematoxylin and eosin [H&E] stain, ×40). Multilayer thickened trabeculars of cancellous bone under the cortical bone can be seen, as well as cartilarge and fibrotic tissue in the portion of the fracture gap on the left (arrow). (B) The magnified (white square in A) histological findings (H&E stain, ×100) show some osteoclasts (arrows), chondrocytes, and a few osteoblasts on the fracture lesion. New bone formation can be seen, but at relatively low levels.