Initial stage of clinical union of bone is equivalent to
The first signs of union are seen in stage of hard callus formation A. Clinical sign:fracture is no more mobile B. Radilogical sign :callus is seen on X ray *hard callus is immature woven bone* Ref: Maheshwari 9th/e p 12
Callus formation with woven bone
Woven bone Formation
Haematoma formation
Calcification formation only
Anatomy and physiology of bone and fracture healing