(4) Bones may get deformed due to many reasons. These include congenital (from birth),developmental (from abnormal growth during childhood), and posttraumatic(from healing in a deformed position after a fracture). Bones may be deformed in four ways: angulation (a bend in the bone), rotation or torsion (a twist in the bone), translation or displacement (a shift in the position of the bone after a fracture or osteotomy), or limb length discrepancy (difference in the length of a bone compared with the other side). One more reason for it can be excessive intake of flourine.