Stage 1 of bone healing - ANS Hematoma formation
24-72 hrs
Stage 2 of bone healing - ANS hematoma to granulation tissue
3 days - 2 weeks
Stage 3 of bone healing - ANS calcium formation
3-6 weeks
Stage 4 of bone healing - ANS osteoblastic proliferation
3-8 weeks
Stage 5 of bone healing - ANS Starts as early as 4 - 6 weeks after fracture and may continue for up to a
year
bone remodeling
Complications of Fractures - ANS Acute compartment syndrome
Crush syndrome
Hemorrhage and hypovolemic shock
Fat embolism syndrome
Venous thromboembolism
Infection
Chronic complications
, Possible chronic complications - ANS Delayed Union
Malunion
Nonunion
Avascular Necrosis of the Bone-see question
Complex regional pain syndrome
the 6 P's - ANS Pain
Pulses
Pallor
Paresthesia
Pressure
Paralysis
Pain - ANS related to edema, bone fragments, and muscle spasms. unrelieved pain is associated with
compartment syndrome
Pulses - ANS diminished or absent pulse distal to the site of the injury indicate poor perfusion
Pallor significance - ANS poor perfusion
Paresthesia significance - ANS possible nerve damage
Pressure significance - ANS related to edema. May result in compartment syndrome
Paralysis significance - ANS significant nerve damage