Comminuted Fracture: Definition, Causes, and Treatment

A comminuted fracture is a bone broken into three or more fragments.

Mechanism

High-energy trauma: motor vehicle collisions, falls from height, crush injuries, gunshot wounds, severe sports injuries.

Characteristics

• Severe pain, deformity, swelling, inability to bear weight/move.
• High risk of soft tissue damage (nerves, vessels, muscle).
• Often open (compound) fractures.

Treatment

• Emergency stabilization: Splinting, analgesia, IV fluids, antibiotics if open.
• Surgical fixation (ORIF): Plates, screws, intramedullary nails, external fixation. Anatomic reduction of fragments critical.
• Bone grafting may be needed for segmental loss.
• Rehabilitation: Prolonged; protected weight-bearing, PT.

Complications

• Nonunion/malunion.
• Infection (especially open).
• Post-traumatic arthritis.
• Compartment syndrome (acute).
• Complex regional pain syndrome (CRPS).