This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tuberculosis of Bone & Joints, Subject name: Orthopaedics
Which of the following is the most probable diagnosis of the patient with the following x-ray? 
Select and explain. 
A. Osteoporosis, B. Pott's spine, C. Metastatic bone disease, D. Multiple myeloma
B: Pott's spine
Answer: B: Pott's spine 
Explanation: Ans. is 'b' i.e., Pott's spine * Characteristic radiological feature of pott's spine is obliteration of disc space with destruction (wedge compression) of one or two adjacent vertebrae.* This feature differentiates Koch's spine from other diseases causing vertebral destruction (like metastasis, multiple myeloma), in which disc space is preserved.