This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
Tuberculosis of the spine commonly affects all of the following parts of the vertebra except - 
Select and explain. 
A. Body, B. Lamina, C. Spinous process, D. Pedicle
C: Spinous process
Answer: C: Spinous process 
Explanation: Posterior (appendiceal) type is least common form of spinal TB.
In posterior type, spinous process and transverse process are involved least commonly.