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
Which is not true regarding compamental syndrome 
Select and explain. 
A. Common in a closed fracture, B. Common in soft-tissue crush injury, C. Pain on passive extension of the muscles is diagnostic, D. Intracompamental pressure studies are required
D: Intracompamental pressure studies are required
Answer: D: Intracompamental pressure studies are required 
Explanation: Most common in a closed fracture or soft-tissue crush injuryPain on passive extension of the muscles is diagnosticIntracompamental pressure studies are not reliableIf there is any suspicion, then fasciotomy must be performed earlyIntracompamental pressure measurements should only be used for diagnosis in the unconscious patient where the classic sign of extreme pain on passive stretching cannot be elicited.Bailey and Love 26e PG: 432