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: Surgery
Which of the following is the commonest cause of anterior compament syndrome? 
Select and explain. 
A. Fractures, B. Gas gangrene, C. Superficial injury to muscles, D. Operative trauma
A: Fractures
Answer: A: Fractures 
Explanation: Anterior compament syndrome can be caused by a tibial fracture or a high-velocity blow to the anterior compament of the leg, resulting in increased pressure in the anterior compament of the leg. Because the fascia covering the anterior compament is unable to expand, pressure continues to build, causing restricted blood flow and eventual necrosis of tissues. If untreated, anterior compament syndrome can result in amputation of the limb. Ref: Moon D.A., Foreman K.B., Albeine K.H. (2011). Chapter 37. Leg. In D.A. Moon, K.B. Foreman, K.H. Albeine (Eds), The Big Picture: Gross Anatomy.