Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooCompartment Syndrome - Acute

Ankle & Lower Leg

What It Is

Compartment syndrome happens when pressure builds up to dangerous levels inside a group of muscles. The pressure reduces blood flow, which stops oxygen and nourishment from reaching the muscle and nerve cells (AAOS, n.d.). It develops when there is swelling or bleeding within a compartment (AAOS, n.d.). The condition can be either acute or chronic.

Acute compartment syndrome is a medical emergency. It is usually caused by a severe injury and is extremely painful. Without prompt surgery, it can cause permanent muscle damage (AAOS, n.d.).

Chronic compartment syndrome, also known as exertional compartment syndrome, is usually not a medical emergency. It is most often caused by athletic exertion, and the symptoms ease with rest (AAOS, n.d.).

Acute compartment syndrome most often occurs in the lower leg (AAOS, n.d.).

Warning signs of acute compartment syndrome include (AAOS, n.d.; NHS, 2026)

  • Severe pain that is worse than you would expect from the injury, especially when the muscle is used or stretched
  • Swelling, or a muscle that feels tight or full
  • Tingling, burning, pins and needles, numbness or weakness (numbness and weakness are late signs)

If you have these signs, or sudden severe pain after an injury or under a tight bandage or cast, call 911 or go to the emergency room at your nearest hospital straight away. Loosen a tight bandage if you can, but if you have a cast, do not try to remove it yourself (AAOS, n.d.).

Compartment Syndrome Acute Anatomy

Compartments are groups of muscles, blood vessels and nerves within your legs and arms. A tough membrane called the fascia covers these tissues. The fascia’s role is to keep all of the tissues in place, so it does not stretch or expand easily (AAOS, n.d.). The lower leg, between the knee and the ankle, has four main muscle compartments (AAOS, n.d.).

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

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