6.6 Fracture and Repair of Bone

Characterized by two events: the formation of a fibrocartilaginous callus and a bony callus to bridge the gap between the broken ends of the bones.

• bone remodeling phase

• fracture hematoma

• reparative phase

• stress fracture

Any break in a bone

• fracture

• stress fracture

• callous

• bone remodeling

This final phase of fracture repair in bone happens when dead fragments of original bone replace the spongy bone tissue.

• reparative phase

• bone remodeling phase

• reactive phase

A part of the reparative phase that replaces fibrocartilaginous callus with bony callus. This phase lasts 3-4 months.

• callus

• hematoma

• periosteum

• bony callous formation

A blood clot that forms within 6-8 hours after a bone breaks , due to broken blood vessels.

• fracture hematoma

• cartilage hematoma

• bony callous

• fracture

An inflammatory phase of fracture and bone repair when blood leaks from a broken bone.

• reparative phase

• bone remodeling phase

• reactive phase