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Femoral Anteversion

What is femoral anteversion?

Femoral anteversion is an inward twisting of the thigh bone, also known as the femur (the bone that is located between the hip and the knee). Femoral anteversion causes the child's knees and feet to turn inward, or have what is also known as a "pigeon-toed" appearance. It is twice as likely to be seen in girls and most typically occurs among toddlers.

What causes femoral anteversion?

Femoral anteversion can be the result of stiff hip muscles due to the position of the baby in the uterus. It also has a tendency to run in families. Typically, a child's walking style looks like that of his/her parents.

When the child is first learning how to walk, femoral anteversion can create an intoeing appearance. As the knees and feet turn in, the legs look like they are bowed. The bowed leg stance actually helps the child achieve greater balance as they stand. Balance is not as steady when they try to stand and walk with their feet close together or with their feet turned out. This may cause them to trip and fall.

How is femoral anteversion diagnosed?

The diagnosis of femoral anteversion is made by a physical examination by your child's physician. During the examination, the physician obtains a complete prenatal and birth history of the child and asks if other family members are known to have femoral anteversion.

Other diagnostic procedures may include:

In addition, some physicians place ink or chalk on the bottom of the child's feet and have them walk on paper to evaluate the amount of intoeing the child has.

Treatment for femoral anteversion:

Specific treatment for femoral anteversion will be determined by your child's physician based on:

The twisting in of the thigh bone usually improves with time. As the child grows, normal walking patterns typically resume by 8 to 10 years of age.

Occasionally braces or special shoes are prescribed by the physician.

Long-term outlook for a child with femoral anteversion:

Femoral anteversion has a very good prognosis. Many cases correct themselves as the child grows. On rare occasions, femoral anteversion can be severe and surgery may be required to straighten the thigh bone.

It is important to know that femoral anteversion typically does not lead to arthritis or any other future health problems.

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