Knock knees, also known as genu valgum, is a condition in which the knees tilt inward while the ankles remain spaced apart
. It is common in children aged 3 to 6 and usually gets better on its own as they grow
. However, in some cases, knock knees may cause problems such as pain, difficulty walking, or limping
. Causes of knock knees include:
- Normal bone growth and development during childhood, particularly between ages 2-4
- A healed fracture in the growth area of one of the bones around the knee
- Rickets, a bone growth problem caused by a lack of vitamin D or calcium
- One knee turning in more than the other or only one side turning in
Symptoms of knock knees may include:
- A gap between the ankles when standing with the knees together
- Pain, swelling, stiffness, or warmth in the knees
- Limping or difficulty walking
Treatment for knock knees is usually not necessary, as the condition often improves as children grow and their legs straighten
. However, in some cases, physiotherapy or treatment from a foot specialist (podiatrist) may be recommended
. Rarely, surgery to straighten the knees and legs may be recommended
