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Bone can be induced to grow at surgically created sites by the method called:

 # Bone can be induced to grow at surgically created sites by the method called:
A. Osteogenesis
B. Distraction osteogenesis
C. Bone wax
D. Green stick fracture



The correct answer is B. Distraction osteogenesis.

• Distraction osteogenesis is the method of inducing bone to grow at surgically created sites. 
• Russian Surgeon Ilizarov discovered in 1950's that if cuts were made through the cortex of a long bone of the limbs, the arm or leg then could be lengthened by tension to separate bony segments. 

• Currently it is believed that best results are obtained if this type of distraction starts after a few days of initial healing and callus formation and if the segments are separated at a rate of 0.5 - 1.5 mm/day. 

• Also this technique is employed for lengthening of mandible and inducing maxillary growth by separating cranial and facial bone at their sutures. 



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