Which sequence correctly lists the stages of bone fracture healing in order?

Which sequence correctly lists the stages of bone fracture healing in order?

• A. Hematoma forms; Fibrocartilage callus forms; Bony callus forms; Bone remodeling
• B. Hematoma forms; Bony callus forms; Fibrocartilage callus forms; Bone remodeling
• C. Fibrocartilage callus forms; Hematoma forms; Bony callus forms; Bone remodeling
• D. Bone remodeling; Hematoma forms; Fibrocartilage callus forms; Bony callus forms

Answer: (A)

Fracture healing follows a fixed sequence: an initial hematoma forms right at the fracture, providing the inflammatory environment and a scaffold for repair; then a soft fibrocartilaginous callus develops to bridge the gap; this is followed by a hard bony callus as woven bone replaces the soft tissue and stabilizes the fracture; finally the bone remodels over time to restore its normal shape and strength. The option that lists hematoma forms first, then fibrocartilage callus, then bony callus, and finally bone remodeling matches this progression. The other sequences mix up the order (for example, placing the fibrocartilage callus before the hematoma, or trying to remodel before a proper hard callus forms), which doesn’t reflect how healing progresses.

Fracture healing follows a fixed sequence: an initial hematoma forms right at the fracture, providing the inflammatory environment and a scaffold for repair; then a soft fibrocartilaginous callus develops to bridge the gap; this is followed by a hard bony callus as woven bone replaces the soft tissue and stabilizes the fracture; finally the bone remodels over time to restore its normal shape and strength. The option that lists hematoma forms first, then fibrocartilage callus, then bony callus, and finally bone remodeling matches this progression. The other sequences mix up the order (for example, placing the fibrocartilage callus before the hematoma, or trying to remodel before a proper hard callus forms), which doesn’t reflect how healing progresses.