After a Fracture of the Diaphysis Has Healed, the Thickened

Question

After a fracture of the diaphysis has healed, the thickened region that results is called the
A) epiphyseal plate.
B) external callus.
C) dense tuberosity.
D) condyle.
E) fracture facet.

Accepted Answer

After a fracture of the diaphysis has healed, the thickened region that results is called the external callus. This is because a fracture causes a disruption in the normal bone structure, which triggers the formation of new bone tissue to repair the damage. The external callus is a temporary structure that forms outside the broken bone and helps to stabilize the fracture site while new bone tissue is being generated. Over time, the external callus is gradually remodeled into mature bone tissue, resulting in a complete fracture healing.