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KEY POINTS
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Bowlegs is the term for legs that bow outwards at the knees. Your child’s knees do not touch when your child stands with the feet together. Bowlegs are very easy to see at 12 to 18 months, when your child starts to stand and walk.
Knock knees is the term for lower legs that angle out from the knees. Your child’s ankles do not touch when your child stands with the knees touching. Knock knees usually are noticed between the ages of 3 and 6.
A baby's legs are folded inside the mother’s uterus before birth. Most babies are bowlegged at first, but grow out of it by the age of 2. Bowlegs may also be caused by:
Your healthcare provider will ask about your child's symptoms and medical history and examine your child. Your child may have X-rays if old enough to have outgrown bowlegs or knock knees.
Most children with bowlegs don’t need treatment. Standing and walking helps the legs straighten over time. Your child’s provider will check your child’s growth at each office or clinic visit.
Legs that look knock kneed usually start to straighten out by age 5 or 6 as your child grows. The legs will typically look normal by age 7 or 8.
If your child’s bowlegs or knock knees are caused by obesity, a bone problem, or lack of vitamin D, treating the condition will help. Your healthcare provider may refer your child to a bone specialist. Rarely, children may need braces, special shoes, or surgery to help straighten the legs.
Follow the full course of treatment prescribed by your healthcare provider. Ask your provider:
Make sure you know when your child should come back for a checkup. Keep all appointments for provider visits or tests.