How does a corticocancellous particulate graft facilitate healing?

Corticocancellous particulate grafts facilitate healing primarily through the process of osteoconduction. This mechanism involves the provision of a scaffold that supports the migration and proliferation of osteogenic cells to the graft site. The graft material, consisting of both cortical and cancellous bone, creates a three-dimensional matrix that allows bone cells to adhere, which is crucial for subsequent bone formation.

In the context of osteoconduction, the graft serves as a physical structure where new bone can grow. The cancellous component, characterized by its porous nature, provides an extensive surface area that is ideal for vascular infiltration and the attachment of bone-forming cells. This is essential for repairing and regenerating bone in areas that have undergone defects or surgical intervention.

While osteoinduction refers to the process where osteogenic precursor cells are stimulated to differentiate into bone-forming cells, and osteogenesis is the formation of new bone by living osteoblasts, these processes are not the primary functions attributed to particulate grafts. Cell-mediated immunity does not play a direct role in the specific healing facilitation associated with corticocancellous grafts, as it pertains more to immune responses rather than the direct bone healing mechanisms.

Therefore, the correct reason corticocancellous particulate grafts facilitate