When a bone is fractured, bleeding occurs at the site of the injury and a blood clot forms. This blood clot serves as a framework for early bone repair.
The next step is the growth of cells from the healthy tissues surrounding the bone, which make a soft callus around the break.
As the soft callus begins to form, new bone cells called osteoblasts move in and begin to form hard bone tissue around the fracture site. The soft callus then hardens into a hard callus.
Osteoclasts, another type of bone cell, then begin the process of remodeling the hard callus, reshaping it to match the original shape of the bone.
Finally, osteoblasts move back in and continue to build new bone tissue, replacing the hard callus with solid, strong bone.
Overall, bone repair is a complex process that involves the coordinated actions of multiple cells and tissues, working together to rebuild the bone and restore its function.
Explain how bones repair when fractured
1 answer
1 answer