Final answer:
The procallus tissue of the fractured hematoma transforms into a bony callus of spongy bone, which subsequently remodels to match the original bone structure during the healing process.
Step-by-step explanation:
The procallus tissue formed from the fractured hematoma transforms into a bony callus made of spongy bone. Initial blood clots, or hematomas, resulting from a bone fracture stimulate a healing process. Within days, capillaries and phagocytic cells migrate to the area, starting the cleanup of dead cells. Fibroblasts and osteoblasts enter, creating a fibrocartilaginous callus from collagen fibers and beginning the formation of spongy bone. This intermediate tissue is then gradually converted into a bony callus.
The entire process, akin to endochondral ossification, where cartilage is ossified, involves both osteoblasts and osteoclasts, and leads to the formation of bone matrix that firmly joins the broken bone ends together within approximately two months. Finally, the bony callus is remodeled into the shape of the original bone over several months, with the potential for unevenness remaining for years.