This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
Block veebrae are seen in 
Select and explain. 
A. Pagets disease, B. Leukemia, C. TB, D. Klippel-Feil syndrome
D: Klippel-Feil syndrome
Answer: D: Klippel-Feil syndrome 
Explanation: A block veebra is a type of veebral anomaly where there is a failure of separation of two or more adjacent veebral boidesAssociationsThere is a frequent association with hemiveebrae/absent veebra above or below block level, posterior element fusionFusion of multiple cervical veebral bodies is also seen in Klipple-Feil syndrome and VACTREL anomaly(Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 380 - 381)