Exertional compartment syndrome is a condition that occurs when swelling and pressure build up in a body space (compartment) of the arms or legs during or after exercise. Groups of muscles, nerves, and blood vessels in the arms and legs are separated into various compartments. Each compartment is surrounded by tough layers of tissue called fascia. During exercise, muscle swells due to increased blood flow. The swelling may increase the pressure within the layers of fascia and begin to push on the structures within that compartment. This can lead to pain, numbness, or weakness.
Exertional compartment syndrome most often affects the lower legs. Symptoms usually get better or go away after stopping the exercise. Sometimes, the pain