18
Feb
Creeping Substitution Bone Healing. When the bone is immature the head is most vulnerable. Another effect of necrosis is the induction of internal Haversian remodeling. 2 creeping substitution of cancellous bone initially involves an appositional bone formation phase followed by a resorptive phase whereas cortical grafts undergo a reverse creeping substitution process. Assist in arthrodeses and spinal fusions.
Such autologous cancellous bone pieces are osteoconductive osteoinductive and osteogenic. The term creeping substitution is used to describe this slow vessel invasion and bony replacement a process formally known as osteoconduction. The inflammatory cells and granulation tissue creeps and new bone is. More rigid constructs facilitate primary bone healing via creeping substitution. It also provides structural support and thus can be utilized for load-bearing areas 10. These grafts heal by means of creeping substitution.
Phemisters concept remains valid.
Bone healing in the fracture line Creeping substitution occurs here. Almost 1 million bone grafting procedures performed in US each year with a growth of almost 13 per year. Depending on the size of the graft and both. Subsequently during the remodelling phase cells form a callus in place of the resorbed tissue and then structured living bone. He believed that transplanted bone was invaded by vascular granulation tissue causing the old bone to be resorbed and subsequently replaced by the host with new bone. However less rigid constructs permits greater motion at the fracture site and results in bone healing through secondary intention and callus formation.