In posterior compament syndrome which passive movement causes pain?

C. i.e. Toe dorsiflexion Compament syndrome is clinically diagnosed by high index of suspicion in any patient with pain out of propoion to injury, who is unresponsive b/O associated head or other injury. Physical findings that warn are pain on passive range of motion of toes causing affected compamental muscles stretchQ, and tense compaments that are tender on palpation. So compament syndrome affecting posterior leg can be earliest diagnosed by passive stretch of toe plantiflexiors that occurs during (passive) toe, dorsiflexion movementQ.