Bone Healing

Question 1

Bone healing is dependant on:

Answer 1

Adequate blood supply, stabilization of fracture fragments, relatively small fracture gaps and abscence of infection

Question 2

Describe the extraosseous blood supply:

Answer 2

Recruited from surrounding soft tissue. Temporary but important in the initial stages of bone healing.

Question 3

Factors the influence vascular response to a fracture:

Answer 3

Trauma in connection with an accident, careless/improper handling of soft tissue, inadequate reduction of fracture fragments, inadequate stabilization of bone fragments

Question 4

How much overlap of a fracture is needed for bone regrowth?

Answer 4

25%

Question 5

Name the ‘zones’ of the soft callus:

Answer 5

Medullary bridging callus, intercortical callus, periosteal bridging callus