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What Are Knocked Knees?

Knock knees, also called genu valgum, is a type of knee condition. Knock knees occur when your knees tilt together, but your ankles stay apart. This condition usually affects Ìð¹ÏÊÓÆµren between 3–7 years old.

Most Ìð¹ÏÊÓÆµren experience some kind of knock knees as they grow. The condition usually corrects itself as your Ìð¹ÏÊÓÆµ gets older. However, if your Ìð¹ÏÊÓÆµâ€™s knock knees do not go away, they may need treatment.

What Causes Knock Knees?

Children start out bow-legged. As they grow, their legs begin to straighten. When they learn to walk, their knees tilt inward. The tilting causes their knees to touch, creating knocked knees. In most cases, your Ìð¹ÏÊÓÆµ will outgrow having knocked knees.

There are other conditions that can cause knock knees:

  • Metabolic problems with the bone

  • Injury or infection in the leg

  • Obesity or being overweight

Knock Knees Symptoms

The most common symptom of knock knees is visible when your Ìð¹ÏÊÓÆµ stands. If your Ìð¹ÏÊÓÆµ has knock knees, you may notice that your Ìð¹ÏÊÓÆµâ€™s knees touch and their ankles stay far apart.

Your Ìð¹ÏÊÓÆµ may also experience knee pain or join stiffness especially with activity.

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How Is Knock Knees Diagnosed?

Your Ìð¹ÏÊÓÆµâ€™s health care provider will perform a physical exam to check your Ìð¹ÏÊÓÆµ for knock knees. They will look at your Ìð¹ÏÊÓÆµâ€™s legs, knees, and ankles. Your provider may also measure the distance between your Ìð¹ÏÊÓÆµâ€™s ankle bones. If your Ìð¹ÏÊÓÆµ is older than two years old, your provider may suggest an X-ray.

Knock Knees Treatment

The first step in treating knock knees is pinpointing the cause of your Ìð¹ÏÊÓÆµâ€™s knock knees. Most cases of knock knees do not need treatment.

Treatment options depend on the age of your Ìð¹ÏÊÓÆµ and severity of their knock knees. Medications and nutrition supplements treat knock knees caused by rickets.

Knocked Knee Surgery

If your Ìð¹ÏÊÓÆµâ€™s knock knees do not improve with time and treatment, your provider may suggest surgery. Knock knee surgery is called guided growth surgery.

Guided growth surgery is an option for Ìð¹ÏÊÓÆµren still growing. Your Ìð¹ÏÊÓÆµâ€™s surgeon inserts a small metal bracket in your Ìð¹ÏÊÓÆµâ€™s knee to help direct future bone growth. The surgeon removes the growth plate when bone angle improves. In more severe cases, or for older Ìð¹ÏÊÓÆµren who are done growing, a surgery to cut and realign the bone may be needed.

Your pediatric surgeon may recommend simple exercises and physical therapy after surgery. Exercises and physical therapy can improve your Ìð¹ÏÊÓÆµâ€™s strength and range of motion.

Why Choose Ìð¹ÏÊÓÆµ of Utah Ìð¹ÏÊÓÆµ?

U of U Ìð¹ÏÊÓÆµ has year-after-year exceptional rankings as offering the best health care in the nation. It's not a surprise. We believe collaboration throughout our system — from physicians, researchers, biologists, and more — leads to the most imaginative care.

Working together in a rich, diverse clinical environment means our discoveries have a direct impact on the health of our patients. U of U Ìð¹ÏÊÓÆµ isn't satisfied with just offering health care. We want to transform it.

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