Femoral anteversion, also called hip arteversion, is a condition where the femoral neck, the part of the femur (thigh bone) that connects the ball of the hip joint to the shaft of the bone, is tilted forward, leading to a “pigeon-toed” appearance where a child’s knees and feet turn inward. This condition is commonly noticed in children between the ages of 4 and 6, when they start walking. Children are born with about 40 degrees of femoral anteversion, naturally it decreases to about 10 to 15 degrees during adolescence. Although the condition is usually harmless and tends to improve naturally as children grow, some children may experience discomfort, difficulty walking, or an altered gait.
In most cases, femoral anteversion does not require treatment, but in more severe instances, physical therapy or even surgery may be necessary to correct the alignment and improve mobility.
Femoral anteversion can be caused by stiff hip muscles from the baby’s position in the uterus or hereditary. The symptoms include inward-facing toes and bowed legs. The bowed stance aids in balance, but children may struggle with balance and trip if they stand or walk with their feet too close together or turned in. These symptoms can be similar to other health issues, so it’s important to consult a healthcare provider for a proper diagnosis.
The treatment for femoral anteversion varies depending on your child’s symptoms, age, overall health, and the severity of the condition. In most cases children start walking normally by ages 8 to 10. While the doctor may suggest braces or special shoes, studies have shown that these treatments usually don’t provide significant benefit. If the condition is severe or persists into later childhood, surgery may be required to straighten the thighbone and correct the alignment.
When femoral anteversion is in excess, it causes an abnormal alignment of the femur, which overloads the anterior structures of the hip joint, such as the labrum and joint capsule. This misalignment places increased stress on the hip and knee joints. In particular, when the foot is positioned forward, the femoral head may sublux, or partially dislocate, from the acetabulum (the hip socket). This abnormal torsion can lead to chronic pain, joint instability, and accelerated wear in both the hip and knee joints, which may require treatment to prevent further damage.
In cases, where femoral anteversion doesn’t improve naturally and leads to difficulties with walking or pain in the legs, a femoral derotational osteotomy may be necessary to correct the rotation. This procedure helps improve leg alignment, reduce discomfort, and enhance walking ability.