AEMCA Practice Exam

Which sequence correctly describes the stages of bone healing following a fracture?

1. Fibrocartilage, bone callus, remolding, hematoma

2. Hematoma, fibrocartilage, bone callus, remolding

3. Remolding, hematoma, fibrocartilage, bone callus

4. Bone callus, remolding, hematoma, fibrocartilage

The correct answer is: Hematoma, fibrocartilage, bone callus, remolding

The correct sequence that describes the stages of bone healing following a fracture starts with the formation of a hematoma, which is a blood clot that forms immediately after the fracture. This is crucial as it provides a foundation for healing and serves to reduce blood loss at the site of the injury. Following the hematoma stage, fibrocartilage is formed as new tissue develops to bridge the gap between the broken ends of the bone. This soft callus is essential for stabilizing the fracture site and ultimately serves as a precursor to bone formation. As healing progresses, a hard callus made of bone tissue begins to develop, transforming the fibrocartilage structure into a more durable form that reconnects the bones structurally. Lastly, the remodeling phase occurs, where the bone callus is reshaped and strengthened over time to return the bone to its normal structure and function. The remodeling process is vital as it allows the new bone to adapt to the mechanical stresses it will encounter during normal use. This sequence of hematoma formation, followed by fibrocartilage development, the creation of the bone callus, and concluding with remodeling is essential for effective bone healing and recovery.