When Hurting Your Leg Can Lead to Blood Clots

Medically Reviewed by James Beckerman, MD, FACC on July 20, 2021

After hurting your leg, you're probably dealing with some discomfort and inconvenience. But that's not all you have to be concerned about. This type of injury raises your chances for getting a blood clot.

Any time a blood vessel gets damaged, the nearby blood can thicken and organize into a sticky clump, or clot. Some clots only affect veins near your skin's surface. This condition, called superficial thrombophlebitis, typically doesn't lead to serious problems.

When a blood clot forms farther inside your leg, it's known as deep vein thrombosis (DVT). These clots can be dangerous if they break loose and travel to your lungs. Doctors call this a pulmonary embolism (PE).

What Kind of Injuries?

Trauma could result from a car accident, a sports injury, or even a fall. Common mishaps that may lead to a clot include:

  • Broken bones
  • Bad bumps
  • Severe bruises
  • Severe muscle injuries

A 2008 study revealed even minor leg injuries -- ones that don't need a cast or bed rest -- can raise your odds of having DVT. Researchers found as many as 1 in 13 blood clots may be caused by small problems, such as muscle tears or ankle sprains.

What to Watch For

deep vein thrombus in leg

Many people don't notice any symptoms. Spotting DVT could be tricky after an injury because a bruise or bump can look like a clot. DVT symptoms can be mistaken for a muscle tear, a charley horse, a twisted ankle, or shin splints.

Your leg could:

  • Swell
  • Hurt or feel tender, maybe like a cramp
  • Feel warm
  • Look red or discolored
  • Have veins that stick out

If a clot moves to your lungs, you may:

Call your doctor if you notice anything unusual or worrisome after a leg injury.

Who Is at Risk?

Some people are more likely than others to develop a blood clot. Your odds are higher when you:

Being overweight and smoking will raise your chances. Also, being a couch potato can lead to a clot.

While blood clots are less common in younger, healthy people, they're still possible. Fit athletes are likely to be injured, get dehydrated, and travel long distances for events. These things increase the odds of blood clots, too.

Prevent Clots

You might still be hurting from your injury, but activity is key for keeping clots at bay. Don't sit or stand for more than an hour at a time if you can help it.

Your doctor might tell you to wear special compression stockings if you have a higher chance for developing a clot.

Drink plenty of water, and stay away from alcohol, especially if you're traveling long distances.

Try not to hurt your legs again during your recovery. Losing extra weight and quitting smoking can lower your chance of getting a blood clot.

Show Sources


OrthoInfo: "Deep Vein Thrombosis."

Mayo Clinic: "Blood Clots," "Thrombophlebitis: Symptoms and causes," "Deep Vein Thrombosis (DVT): Definition," "Deep Vein Thrombosis (DVT): Risk factors," "Deep Vein Thrombosis (DVT): Prevention."

AHRQ Archive: "Your Guide to Preventing and Treating Blood Clots."

CDC: "Venous Thromboembolism (Blood Clots): Facts."

Archives of Internal Medicine: "Minor Injuries as a Risk Factor for Venous Thrombosis."

National Blood Clot Alliance: "Signs and Symptoms of Blood Clots," "Athletes and Blood Clots."

Circulation: "Venous Thromboembolism and Marathon Athletes."

University of Connecticut, Korey Stringer Institute: "Deep Vein Thrombosis."

National Heart, Lung, and Blood Institute: "How Can Deep Vein Thrombosis Be Prevented?"

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