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Calf Strain

What is a calf strain?

A strain is an injury in which muscle fibers or tendons are stretched or torn. People commonly call such an injury a "pulled" muscle. A calf strain is an injury to the muscles and tendons in the back of your leg below your knee.

How does it occur?

A strain of your calf muscles can occur during a physical activity where you push off forcefully from your toes. It may occur in running, jumping, or lunging.

What are the symptoms?

A calf muscle strain may cause immediate pain in the back of your lower leg. You may hear or feel a pop or a snap.

You may get the feeling that someone has hit you in the back of the leg. It is hard to rise up on your toes. Your calf may be swollen and bruised.

How is it diagnosed?

Your health care provider will examine your lower leg. Your calf muscles will be tender.

How is it treated?

Treatment may include:

  • applying ice packs to your calf for 20 to 30 minutes every 3 to 4 hours for 2 or 3 days or until the pain goes away
  • elevating your leg on a pillow while you are lying down
  • wrapping an elastic bandage around your calf to keep the swelling from getting worse
  • using crutches, if it is too painful to walk.
  • taking anti-inflammatory medications
  • getting physical therapy, which may include treatment of the muscle tissue by a therapist using ultrasound or muscle stimulation.
  • having your health care provider or therapist tape the injured muscles while they are healing to help you to return to athletic activities
  • doing rehabilitation exercises.

While you are recovering from your injury, you will need to change your sport or activity to one that does not make your condition worse. For example, you may need to swim instead of run.

When can I return to my sport or activity?

The goal of rehabilitation is to return you to your sport or activity as soon as is safely possible. If you return too soon you may worsen your injury, which could lead to permanent damage. Everyone recovers from injury at a different rate. Return to your activity will be determined by how soon your calf recovers, not by how many days or weeks it has been since your injury occurred. In general, the longer you have symptoms before you start treatment, the longer it will take to get better.

You may safely return to your sport or activity when, starting from the top of the list and progressing to the end, each of the following is true:

  • You have full range of motion in the injured leg compared to the uninjured leg.
  • You have full strength of the injured leg compared to the uninjured leg.
  • You can jog straight ahead without pain or limping.
  • You can sprint straight ahead without pain or limping.
  • You can do 45-degree cuts, first at half-speed, then at full-speed.
  • You can do 20-yard figures-of-eight, first at half-speed, then at full-speed.
  • You can do 90-degree cuts, first at half-speed, then at full-speed.
  • You can do 10-yard figures-of-eight, first at half-speed, then at full-speed.
  • You can jump on both legs without pain and you can jump on the injured leg without pain.

How can calf strains be prevented?

Calf strains are best prevented by warming up properly and doing calf-stretching exercises before your activity. This is especially important if you are doing jumping or sprinting sports.

Written by Pierre Rouzier, M.D. for McKesson Health Solutions LLC.
This content is reviewed periodically and is subject to change as new health information becomes available. The information is intended to inform and educate and is not a replacement for medical evaluation, advice, diagnosis or treatment by a healthcare professional.
Copyright © 2003 McKesson Health Solutions LLC. All rights reserved.
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