What is chronic exertional compartment syndrome?i have lower leg pain from 8 months, mri reports of ls spine and knee are normal, what is the problem?

Pressure: With exertional compartment syndrome, the fluid pressure in the tissue compartments of the legs increases excessively with certain activities. This can put pressure on nerves and blood vessels, potentially causing pain and structural damage. In severe cases, it can be limb threatening. Generally, avoiding those pain-producing activities is best.