Question

List and briefly describe the phases of healing (3).

Answer 1

The healing of bone fractures involves the formation of a fracture hematoma, callus formation, replacement of cartilage by trabecular bone, and bone remodeling.

Step-by-step explanation:

The healing process of bone and skin tissue involves several overlapping stages. When considering bone fracture repair, the phases include:

1. Formation of a fracture hematoma, where blood collects at the fracture site, forming a clot.
2. Callus formation involving development of both internal and external calli as a temporary stabilizing structure.
3. Trabecular bone replacement of the cartilage, as the calli transform into a more stable bone material.
4. Bone remodeling, where the repaired bone is shaped and refined to restore its original form.

For skin healing, the stages are similarly dynamic:

1. Blood clotting, which immediately begins to halt bleeding and form a scab.
2. Inflammatory response, where the damaged area becomes red, warm, swollen, and painful as part of the body's defensive mechanism.
3. Tissue regeneration, as fibroblasts deposit collagen and new tissue forms to replace damaged areas, depending on the capacity of tissue involved for regeneration.