ABSTRACT
A. Distraction osteogenesis is defined as a surgical technique for reconstruction of skeletal deformities. It involves the gradual and controlled displacement of surgically created osteotomies. After creating an osteotomy, an external force is applied to the edges of the separated bony segments by a distraction device The device gradually separates the bone and associated soft tissue. Distraction stimulates bone generation and causes soft tissue elongation and hypertrophy. The process continues as long as the tissues are distracted or stretched. After the desired result is achieved,distraction is stoppedand the callus is allowed to consolidate into bone.
