Fracture healing. (A). a fracture healing predominantly by
periosteal callus formation. the fracture line is still visible. (B) The fracture lines are almost completely obliterated secondary to formation of endosteal callus. Note also the minimal amount of periosteal callus.
Most Fx heal by some combination of endosteal and periosteal callus.
Provided that blood supply is adequate, undisplaced fractures and anatomically reduced fractures immobilized with adequate compression heal by primary union. (the fracture line becomes obliterated by endosteal callus.)
Fracture Healing and Complications
Fracture healing depends on many factors: the patient's age, the site and type of fracture, the position of the fragments, the status of the blood supply, the quality of immobilization or fixation, the presence or absence of associated abnormalities such as infection or osteonecrosis