A 32-year-old man is evaluated in the orthopedic ward for severe left leg pain. Twelve hours ago, he underwent closed reduction and placement of a long-leg cast for a closed midshaft tibial fracture. He now reports excruciating, throbbing pain in his calf that is worsening and no longer relieved by intravenous morphine. Physical examination reveals a tense, 'tight' feeling in the calf musculature and profound pain with passive dorsiflexion of the toes. He also reports new-onset tingling in the first web space of his foot. Distal pulses remain palpable. Arrange the following steps in the most appropriate chronological order for the acute evaluation and management of this patient's condition.
- 1Bivalve the cast and completely release all underlying circumferential dressings down to the skin.
- 2Position the affected lower extremity level with the patient's heart.
- 3Measure intra-compartmental tissue pressures to confirm the diagnosis.
- 4Perform an emergent four-compartment surgical fasciotomy.
Answer
The correct sequence is: 1) Bivalve the cast and release dressings, 2) Position the extremity at heart level, 3) Measure intra-compartmental pressures, and 4) Perform an emergent fasciotomy.
Acute compartment syndrome is a limb-threatening emergency. The management protocol follows a strict hierarchy: first, remove any external compressive forces (such as a cast or tight dressing) which can immediately drop pressures. Second, optimize hemodynamics by placing the limb level with the heart. Third, if the diagnosis remains ambiguous or symptoms fail to improve, objectively measure compartment pressures. Finally, once confirmed, proceed immediately to the operating room for definitive surgical decompression via fasciotomy.
Step-by-Step Solution
Key Concept
Evaluation and management sequence for acute compartment syndrome