This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Latency period in distraction osteogenesis: 
Select and explain. 
A. 4-7 days, B. 4 weeks, C. 15 days, D. 1 month
A: 4-7 days
Answer: A: 4-7 days 
Explanation: Latency period/Delay
Fracture healing is allowed to occur. This period generally ranges from 4-7 days (AIIMS -2012), allows for the initial fracture healing to occur, by callus formation in order to bridge the cut bone segments.