Stages
Inflammation
- hematoma due to blood vessel disruption
- neutrophils / macrophages / fibroblasts
- remove dead bone
Soft Callus
- collagen formation
- new blood vessels
- osteoblasts and chondroblasts
Hard Callus
- osteoid deposition and mineralisation
- woven bone
Remodelling
- osteoblasts and osteoclasts
- conversion to lamellar bone