This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: TB of the Spine, Subject name: Orthopaedics
The most common sequelae of tuberculous spondylitis in an adolescent is: 
Select and explain. 
A. Fibrous ankylosis, B. Bony-ankylosis, C. Pathological dislocation, D. Chronic osteomyelitis
B: Bony-ankylosis
Answer: B: Bony-ankylosis 
Explanation: (b)- The usual outcome of healed tuberculosis in spine is the bony ankylosis and in peripheral joints like Hip and Knee Fibrous ankylosis is seen.