Answer:
The doctor should investigate about the osteoblasts that should have been constructing the new bone.
Explanation:
The cells, which form bones by discharging the extracellular matrix for bone tissue are known as osteoblasts. These cells discharge the constituents like inorganic electrolytes and collagen fibers that together produce the matrix of the bone tissue. The inactivity or absence of these cells could inhibit the production of new bone post-fracture. Hence, doctors should investigate osteoblasts.
