Fractures: Stages of healing

Stage of healing	Early	Peak	Late
Resolution of soft-tissue swelling	2 to 5 days	4 to 10 days	10 to 21 days
Periosteal new bone	4 to 10 days	10 to 14 days	14 to 21 days
Loss of fracture line definition	10 to 14 days	14 to 21 days	---
Soft callus*	7 to 14 days	14 to 21 days	---
Hard callus*	14 to 21 days	21 to 42 days	42 to 90 days
Remodeling	3 months	1 year	2 years to epiphyseal closure

Fracture_stages_of_healing.htm

* The difference between soft and hard callus is that hard callus bridges the fracture site so that the fracture line begins to fill in.

Adapted from Kocher, MS, Kasser, JR. J Am Acad Orthop Surg 2000; 8:10; and Morzaria, S, Walton, JM, MacMillan, A. J Pediatr Surg 1998; 33:871.

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