Surgery Most common cause of gangrene of foot of a 30 year old farmers who is a chronic smoker A Atherosclerosis B Raynaud's disease C Thromboangiitis obliterans D Myocardial infarction 💡 Explanation Most common cause of gangrene of foot of a 30 year old farmers who is a chronic smoker ✓ Correct Answer: C. Thromboangiitis obliterans