This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Osteomalacia, Subject name: Orthopaedics
Looser's zones are seen in: 
Select and explain. 
A. Osteoporosis, B. Osteomalacia, C. Osteosarcoma, D. TB spine
B: Osteomalacia
Answer: B: Osteomalacia 
Explanation: Ans (b) OsteomalaciaRef : Maheshwari 5th ed. / 312* Cortical infarctions are wide transverse lucencies traversing bone usually at right angles to the involved cortex and are associated most frequently with osteomalacia and rickets . They are pseudo- fractures and considered a type of insufficiency fracture.* Typically, the fractures have sclerotic irregular margins, and are often symmetrical.Causes* Osteomalacia* Renal osteodystrophy* Fibrous dysplasia* Hyperthyroidism* Paget's disease of bone* X linked hypophosphataemia* Osteogenesis Imperfecta