Compartment Syndrome

A 32-year-old man presents with acute compartment syndrome of the leg following a crush injury. Which clinical finding best distinguishes acute compartment syndrome from deep vein thrombosis (DVT) presenting with similar leg swelling and pain?

A 28-year-old woman with a tibia fracture develops compartment syndrome. Which finding best distinguishes acute compartment syndrome from rhabdomyolysis, both of which present with muscle pain, swelling, and elevated creatine kinase (CK)?

A 32-year-old man presents to the emergency department 6 hours after a crush injury to his right leg from a fallen concrete slab. He complains of severe pain out of proportion to clinical findings, pain on passive stretch of the foot, and has tense compartments on palpation. Pulses are still palpable. Which investigation is the gold standard for confirming the diagnosis of acute compartment syndrome?

A 28-year-old woman presents 18 hours after a tibia fracture with severe calf pain, pain on passive dorsiflexion of the foot, and clinical suspicion of compartment syndrome. However, the patient is anxious and her pain perception is variable. Before proceeding to fasciotomy, the orthopedic surgeon wants an objective confirmation. Which is the most appropriate investigation to measure intracompartmental pressure?

Which of the following is the earliest and most sensitive clinical sign of compartment syndrome?