What is broken kneecap?

Broken Kneecap
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Broken kneecap in children: Overview

The kneecap (patella) is a bone that protects the front of the knee joint. It takes the brunt of any blows to the knee, such as a fall onto the knee or hitting the knee against the dashboard. Symptoms of a broken kneecap (fracture) are swelling and pain, especially when moving the knee back and forth.

Your child may not need surgery if the fracture has not moved the kneecap out of position. But sometimes surgery is needed to move the pieces of the kneecap back where they belong and to repair damage.

Whether or not surgery is done, your child probably will wear a cast or brace (immobilizer) on the leg for several weeks while the kneecap heals. Help your child wear and take care of the cast or brace exactly as the doctor advises. Your child may need help with daily tasks.

Healthy habits can help your child heal. Provide a variety of healthy foods. And don't smoke around your child.

How can you care for your child who has a broken kneecap?

  • Follow the doctor's instructions for taking care of your child's cast or immobilizer, which is a protective brace that keeps the knee from moving. Do not remove it until your doctor says you can.
  • Put ice or a cold pack on your child's knee for 10 to 20 minutes at a time. Try to do this every 1 to 2 hours for the next 3 days (when your child is awake) or until the swelling goes down. Put a thin cloth between the ice and your child's skin. Be careful not to get the cast or immobilizer wet.
  • Prop up the sore leg on a pillow when you ice it or anytime your child sits or lies down during the next 3 days. Try to keep it above the level of your child's heart. This will help reduce swelling.
  • Do not use oils or lotions near your child's cast. If the skin becomes red or sore around the edge of the cast, you may pad the edges with a soft material, such as moleskin, or use tape to cover the edges.
  • Be safe with medicines. Give pain medicines exactly as directed.
    • If the doctor gave your child a prescription medicine for pain, give it as prescribed.
    • If your child is not taking a prescription pain medicine, ask the doctor if your child can take an over-the-counter medicine.

Broken kneecap: When to call

Call 911 anytime you think you may need emergency care. For example, call if:

  • You have chest pain, are short of breath, or you cough up blood.
  • You are very sleepy and you have trouble waking up.

Call your doctor now or seek immediate medical care if:

  • You have new or worse nausea or vomiting.
  • You have new or worse pain.
  • Your foot is cool or pale or changes color.
  • You have tingling, weakness, or numbness in your toes.
  • Your cast or splint feels too tight.
  • You have signs of a blood clot in your leg (called a deep vein thrombosis), such as:
    • Pain in your calf, back of the knee, thigh, or groin.
    • Redness or swelling in your leg.

Watch closely for changes in your health, and be sure to contact your doctor if:

  • You have a problem with your splint or cast.
  • You do not get better as expected.

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The content above contains general health information provided by Healthwise, Incorporated, and reviewed by its medical experts. This content should not replace the advice of your healthcare provider. Not all treatments or services described are offered as services by us. For recommended treatments, please consult your healthcare provider.

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