Which healing structure forms to bridge the fracture site before bone remodeling?

Which healing structure forms to bridge the fracture site before bone remodeling?

• A. Bony callus
• B. Hematoma
• C. Open fracture
• D. Comminuted fracture

Answer: (A)

When a fracture occurs, healing progresses from immediate clotting to tissue formation that bridges the gap. The bony callus forms later in this sequence and serves as the bridge across the fracture ends. Osteoblasts lay down woven bone across the fracture, creating a hard, bone-like bridge that stabilizes the site and spans the gap. This bridge is then remodeled over time into mature lamellar bone. So the structure that forms to bridge the fracture site before remodeling is the bony callus.

When a fracture occurs, healing progresses from immediate clotting to tissue formation that bridges the gap. The bony callus forms later in this sequence and serves as the bridge across the fracture ends. Osteoblasts lay down woven bone across the fracture, creating a hard, bone-like bridge that stabilizes the site and spans the gap. This bridge is then remodeled over time into mature lamellar bone. So the structure that forms to bridge the fracture site before remodeling is the bony callus.