Buckle (Torus) Fracture of a Leg

Your child has a break (fracture) of a bone in the leg. A buckle fracture is a very common fracture in children. Because of a child’s softer bones, one side of the bone buckles or bends without any break on the other side. It's also called an "incomplete" fracture for this reason. More severe fractures may need surgery if they are unstable or the bones don't line up the way they should.

These fractures heal faster than complete fractures. But a splint, cast, or boot will still be needed for at least 3 weeks.

Home care

Follow these guidelines when caring for your child at home:

  • Your child will be given a splint, cast, or special boot to keep him or her from moving the leg. Your child should not put weight on a splint, or it will break. Follow the healthcare provider's advice on when your child can start bearing weight on a cast or boot.

  • Keep your child's leg elevated when he or she is sitting or lying down. This is very important during the first 2 days (48 hours) after the injury.

  • Keep the splint, cast, or boot completely dry at all times. When your child bathes, protect the splint, cast, or boot with a large plastic bag, taped or rubber-banded at the top end. If a fiberglass cast or splint gets wet, you can dry it with a hair dryer on the cool setting.

  • Put an ice pack on the injured area. Do this for 20 minutes every 1 to 2 hours the first day for pain relief. You can make an ice pack by wrapping a plastic bag of ice cubes in a thin towel. As the ice melts, be careful that the splint or cast doesn’t get wet. You can place the ice pack directly over the splint or cast. Continue using the ice pack 3 to 4 times a day for the next 2 days. Then use the ice pack as needed to ease pain and swelling.

  • Your child may use acetaminophen or ibuprofen to control pain, unless another pain medicine was prescribed. If your child has chronic liver or kidney disease, talk with the healthcare provider before giving these medicines to your child. Also talk with the provider if your child has had a stomach ulcer or gastrointestinal bleeding. Don’t give ibuprofen to children under 6 months of age.

  • Don’t put creams, lotions, or objects under the cast. If itching continues, contact your provider.

Follow-up care

Follow up with your child’s healthcare provider, or as advised. This is to make sure the bone is healing the way it should. If your child was given a splint, it may be changed to a cast after the swelling goes down.

If X-rays were taken, a radiologist may look at them. You will be told of any new findings that may affect your child's care.

When to seek medical advice

Call your child’s healthcare provider right away if any of these occur:

  • The cast or splint cracks

  • The plaster cast or splint becomes wet or soft

  • The fiberglass cast or splint stays wet for more than 24 hours

  • Tightness or pain under the cast or splint gets worse

  • Toes become swollen, cold, blue, numb, or tingly

  • Your child can’t move the toes on the injured leg

  • The skin around the cast becomes red, swollen, or irritated

  • Fever (see Fever and children, below) or chills

Fever and children

Use a digital thermometer to check your child’s temperature. Don’t use a mercury thermometer. There are different kinds and uses of digital thermometers. They include:

  • Rectal. For children younger than 3 years, a rectal temperature is the most accurate.

  • Forehead (temporal). This works for children age 3 months and older. If a child under 3 months old has signs of illness, this can be used for a first pass. The provider may want to confirm with a rectal temperature.

  • Ear (tympanic). Ear temperatures are accurate after 6 months of age, but not before.

  • Armpit (axillary). This is the least reliable but may be used for a first pass to check a child of any age with signs of illness. The provider may want to confirm with a rectal temperature.

  • Mouth (oral). Don’t use a thermometer in your child’s mouth until he or she is at least 4 years old.

Use the rectal thermometer with care. Follow the product maker’s directions for correct use. Insert it gently. Label it and make sure it’s not used in the mouth. It may pass on germs from the stool. If you don’t feel OK using a rectal thermometer, ask the healthcare provider what type to use instead. When you talk with any healthcare provider about your child’s fever, tell him or her which type you used.

Below are guidelines to know if your young child has a fever. Your child’s healthcare provider may give you different numbers for your child. Follow your provider’s specific instructions.

Fever readings for a baby under 3 months old:

  • First, ask your child’s healthcare provider how you should take the temperature.

  • Rectal or forehead: 100.4°F (38°C) or higher

  • Armpit: 99°F (37.2°C) or higher

Fever readings for a child age 3 months to 36 months (3 years):

  • Rectal, forehead, or ear: 102°F (38.9°C) or higher

  • Armpit: 101°F (38.3°C) or higher

Call the healthcare provider in these cases:

  • Repeated temperature of 104°F (40°C) or higher in a child of any age

  • Fever of 100.4° F (38° C) or higher in baby younger than 3 months

  • Fever that lasts more than 24 hours in a child under age 2

  • Fever that lasts for 3 days in a child age 2 or older

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