Compartment Syndrome

Compartment Syndrome: When Pressure Becomes A Problem

Going the Distance: Building Mileage Without Breaking Down

As you start increasing your mileage and pushing your limits in the heart of marathon prep, your legs are going to feel it. Some soreness? Totally normal. But if you’re dealing with persistent tightness, numbness, or a strange pressure that just won’t quit, it’s time to listen to your body. The good news? Knowing the warning signs and training smart can keep you on track (literally) without running into trouble.

Compartment Syndrome: When Pressure Becomes a Problem

Compartment syndrome in the lower leg happens when excessive pressure builds up within one the muscle ‘compartments’, usually due to swelling or bleeding. Since these compartments are surrounded by tough fascia that doesn’t expand much, the rising pressure can cut off blood flow and nerve function. If left untreated, it can cause permanent muscle and nerve damage—making it a true medical emergency.

There are two types: acute and chronic (exertional). Acute compartment syndrome is usually caused by trauma, like a fracture or a severe bruise, and requires immediate medical attention (often surgery) to relieve pressure. Chronic exertional compartment syndrome (CECS) develops gradually with repetitive activity and tends to ease up with rest.

High-impact or repetitive lower-leg workouts—like long-distance running, sprinting, jumping, or heavy lower-body resistance training—can contribute to CECS. We see this in PT as “shin splints” and is usually precipitated by extended walking up hills ( or incline treadmill) and improper shoe wear.

If you’re experiencing persistent tightness, pain, numbness, or weakness in your lower leg ( particularly with lifting your ankle of extending your toes) during exercise, it’s worth getting checked out before it turns into something more serious.

Remember the 5 P’s of Compartment Syndrome:

1. Pain out of proportion

2. Parasthesia- pins & needles

3. Pallor – pale skin

4. Pulselessness

5. Paralysis

As always, early detection can prevent more serious problems down the road.

Happy running!

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