This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Trauma, Subject name: Surgery
Earliest Sign/Symptom of Compartment Syndrome of Leg is 
Select and explain. 
A. Tingling Numbness, B. Pain on passive flexion of fingers, C. Skin Changes, D. Absent Pulses
B: Pain on passive flexion of fingers
Answer: B: Pain on passive flexion of fingers 
Explanation: Ans. (B) Pain on Passive flexion of FingersRef: Surgery Sixer 3rd Edition Page 103Repeated question so many times,Compartment syndrome of Lower leg is associated with* Early Sign- Pain on Passive stretching* Late Sign- Absent Pulses* Fasciotomy done Longitudinally at 2 sides of Tibia, at pressure >30mmHg.* Delayed Fasciotomy may result in Myoglobinuria and Renal Failure.