Callus Formation
The development of new bone tissue that bridges a fracture site during the healing process.
Full Definition
Callus formation is the natural bone healing response where new bone tissue forms around a fracture site to stabilize and eventually bridge the broken bone. This process occurs in distinct phases including hematoma formation, soft callus development, hard callus formation, and finally bone remodeling. In orthopedic rehabilitation contexts, the stage of callus formation influences weight-bearing restrictions and exercise progression. Radiographic evidence of callus formation is a key indicator for advancing rehabilitation protocols.
Usage
Usage note: Often confused with 'consolidation' which refers to the final healed state rather than the active healing process.
In Context
- "Radiographs at 6 weeks post-fracture showed early callus formation, indicating progression to partial weight-bearing exercises." — rehabilitation progress note
- "The patient's delayed callus formation necessitated extended non-weight-bearing status." — orthopedic consultation