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
Brodie’s abscess is - 
Select and explain. 
A. Chronic osteomyelitis, B. Subacute osteomyelitis, C. Acute osteomyelitis, D. Septic arthritis
A: Chronic osteomyelitis
Answer: A: Chronic osteomyelitis 
Explanation: Chronic osteomyelitis is of 3 types: 
a) chronic osteomyelitis secondary to acute osteomyelitis 
b) Garre's osteomyelitis 
c) Brodie's abscess 

Brodies abscess is a special type of osteomyelitis in which body's defence mechanism have been able to contain infection so as to create chronic bone abscess containing pus or jelly-like granulation tissue surrounded by a zone of sclerosis. 
C/f: Common in 11-20 years Common sites upper tibia and the lower end of femur A deep boring pain is a predominant symptom. can become worse to-night. Examination reveals tenderness and thickening of bone.