Which finding is most specific for compartment syndrome?

Which finding is most specific for compartment syndrome?

• A. History of blunt trauma or a crush injury
• B. Recent participation in a rigorous unaccustomed exercise or training activity
• C. Paresthesia, paresis, pallor, and pulselessness
• D. Severe, persistent deep throbbing leg pain that is intensified with stretch applied to involved muscles

Answer: (D)

The main concept being tested is recognizing the sign most specific for acute compartment syndrome. Severe, persistent deep leg pain that intensifies with passive stretch of the involved muscles reflects ischemia within a confined muscle compartment. When the muscles are stretched, the already elevated pressure further reduces perfusion, causing disproportionate, intensified pain. This pain with passive stretch tends to be an early and more specific clue than other findings, making it the best indicator of compartment syndrome among the options. History of trauma or unaccustomed exercise are common contexts but not specific by themselves. Paresthesia, paresis, pallor, and pulselessness are later signs of nerve or vessel compromise and can occur after the condition has already evolved, so they’re less specific for the early diagnosis.

The main concept being tested is recognizing the sign most specific for acute compartment syndrome. Severe, persistent deep leg pain that intensifies with passive stretch of the involved muscles reflects ischemia within a confined muscle compartment. When the muscles are stretched, the already elevated pressure further reduces perfusion, causing disproportionate, intensified pain. This pain with passive stretch tends to be an early and more specific clue than other findings, making it the best indicator of compartment syndrome among the options.

History of trauma or unaccustomed exercise are common contexts but not specific by themselves. Paresthesia, paresis, pallor, and pulselessness are later signs of nerve or vessel compromise and can occur after the condition has already evolved, so they’re less specific for the early diagnosis.