Identify the underlying disorder based on characteristic zones as marked by by an arrow in the photograph below ?
The characteristic zones as marked by by an arrow in the photograph above represents Looser’s zones.
Looser zones, also known as cortical infractions, Milkman lines, are wide, transverse lucencies traversing part way through a bone, usually at right angles to the involved cortex and are associated most frequently with osteomalacia and rickets. They are pseudofractures and considered a type of insufficiency fracture. Typically, the fractures have sclerotic irregular margins and are often symmetrical.