Which of the following statement(s) is/are true concerning the biologic mechanisms of fracture repair?
A.	The mechanisms involved depend primarily on the stability of the fracture
B.	The first material formed by osteoblasts at the fracture site is woven bone
C.	Callus increases the cross-sectional area of the injury therefore weakening the structure
D.	Woven bone provides a permanent microstructure in the area of a fracture
Answer:A
Which of the following statement(s) is/are true concerning the biologic mechanisms of fracture repair?
A.	The mechanisms involved depend primarily on the stability of the fracture B.	The first material formed by osteoblasts at the fracture site is woven bone C.	Callus increases the cross-sectional area of the injury therefore weakening the structure D.	Woven bone provides a permanent microstructure in the area of a fracture