This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries Around Arm & Elbow, Subject name: Orthopaedics
Amputation is often not required in: 
Select and explain. 
A. Gas gangrene, B. Buerger's, C. Chronic osteomyelitis, D. diabetic gangrene
C: Chronic osteomyelitis
Answer: C: Chronic osteomyelitis 
Explanation: Ans. is 'c' i.e., Chronic Osteomyelitis Amputation is performed in chronic Osteomyelitis, very rarely; in a case with a long standing discharging sinus, especially if the sinus undergoes a malignant change.