Sprain vs. Stress Fracture: How to Spot the Difference

Dealing with pain and swelling in your leg or foot, but not sure what the problem is? Keep reading to find out how you can tell — and what to do about it.

If you have pain and swelling in your foot, ankle, or leg, you may think a sprain is causing your symptoms. Or, maybe it’s a stress fracture.

What’s the difference, anyway? And what difference does it make for your treatment?

Thankfully for you, our expert team at Austin Foot & Ankle Institute is here to fill you in. Here’s what you need to know.

What’s a sprain?

A sprain is the stretching or tearing of a ligament, the tough band of tissue that connects one bone to another. Sprains typically occur suddenly, caused by a twist, fall, or other traumatic injury. Common examples include rolling an ankle or landing awkwardly on a joint.

With a sprain, the pain immediately follows the injury, and widespread swelling appears soon after. You may hear a popping sound at the time of the injury.

You’re also likely to experience a limited range of motion because your joint is stiff, unstable or wobbly, and too painful when you try to put weight on it.

What’s a stress fracture?

A stress fracture, on the other hand, is a small crack in your bone caused by repeated pressure, force, or overuse in the same area. It’s a common problem with runners, athletes, and others who dramatically increase their activity levels.

The pain typically begins as a dull ache that increases during activity. As the fracture worsens, the pain becomes sharper, eventually persisting even when you rest.

Stress fracture pain is generally concentrated in one spot on the bone, becoming increasingly tender and painful. You may also notice mild swelling around that spot.

What’s the difference in treatment?

Stress fractures are classic overuse injuries caused by repetitive motion, and sprains usually result from a traumatic injury forcing your joint into an unnatural position. The pain from a stress fracture develops gradually, and a sprain hurts right away.

Treatment depends on which injury you’re dealing with. If you treat a stress fracture as if it’s a sprain, with rest, ice, compression, and elevation (RICE), that may not immobilize the area enough. If you continue to put weight on it, the fracture could get worse and require surgery.

However, immobilizing a sprain because you think it’s a stress fracture can lead to unnecessary joint stiffness and muscle weakness as you try to recover.

An accurate diagnosis is crucial for receiving timely, effective treatment. Whether you think it’s a sprain or a stress fracture, our expert providers at Austin Foot & Ankle Institute can help you heal. Call our office in Austin or Bee Cave, Texas, or schedule your appointment online today.