Gynaecology & Obstetrics General f1f7b5b5 Which of the following increases callus formation: A Rigid immobilization B Movement at fracture site C Compression plating D Intraosseous nailing High-Yield Explanation Ans: B. Movement at fracture site (Ref Apley 9/e p689)Micro movements at fracture site encourages vascular proliferation -Increases callus formation.