Delayed union and nonunion of fracture

Fracture delayed union refers to fracture after treatment, more than the time required for general healing, fracture ends still do not show fracture connection, called fracture delayed union, x-ray examination shows fracture ends callus less, mild decalcification, fracture line is still obvious, but no obvious bone sclerosis performance, fracture delayed union after removing the inducing factors, can completely fracture healing. Fracture nonunion refers to the fracture after treatment, more than the general fracture healing time, and after another extension of the treatment time, still can not achieve the goal of bone union, x-ray examination shows that the fracture end callus is less, bone end separation, broken end atrophy smooth, closed by fatal sclerosis of bone, clinical fracture has pseudo-joint activity, known as fracture nonunion or bone nonunion. This situation even if extended period, fracture still will not heal, need surgical intervention.