Bowlegs, flat feet and in-toeing in babies and toddlers

What is normal, and when it changes

Bowlegs are normal in babies and toddlers. Legs are bowed from being folded in the womb, and the bowing typically straightens on its own by around two to three years of age.

Then it usually overshoots: many children go through a knock-kneed phase from about three to six years, which also corrects itself, generally settling into adult alignment by around seven or eight.

Flat feet are normal in almost all toddlers. The arch is filled with a fat pad and the ligaments are lax; an arch typically appears between about three and six years. A useful home check for an older child: ask them to stand on tiptoes — if an arch appears then, the foot is flexible and almost always fine.

In-toeing — walking with the feet turned inwards — is common and usually comes from rotation in the thigh or shin bone that unwinds with growth. Most resolves without treatment.

None of these need special shoes, arch supports, massage or leg-straightening exercises, all of which are widely sold in India and none of which change bone alignment.

Rickets and vitamin D, which is the one to actually check

Vitamin D deficiency is very common in India, including in sunny regions — because of skin pigmentation, covered clothing, indoor lifestyles, air pollution and low dietary intake. It is the leading treatable cause of genuinely abnormal bowing.

Rickets bowing differs from normal bowing: it is often more severe, gets worse rather than better after two years, may affect one leg more than the other, and comes with other signs — delayed walking, a widened wrist or ankle, a prominent forehead, delayed teeth, poor growth, bone pain or reluctance to walk.

It is diagnosed with blood tests and an X-ray, and treated with vitamin D and calcium. Treated early, the bowing corrects.

Most Indian paediatric guidance recommends vitamin D supplementation for infants — ask your paediatrician what your child should be on, particularly if exclusively breastfed, and do not assume sunlight alone is covering it.

When to see a doctor

See a paediatrician or paediatric orthopaedic surgeon if: bowing is worsening rather than improving after age two, only one leg is affected, the legs are severely bowed, the child is short for their age or growth has slowed, or there is pain.

Also for: a limp, a foot that cannot be moved into a normal position, in-toeing severe enough to trip the child frequently, flat feet that are painful or stiff — a foot that does not form an arch on tiptoes — or any leg-length difference.

And ask about vitamin D testing if there is bowing plus any of: delayed walking, delayed teeth, frequent illness, poor growth, or an exclusively breastfed infant not on supplements.

This article is general information, not medical advice. For any decision about your child's health, please consult your doctor.

This article is general information, not medical advice, and is no substitute for personal medical advice. For any decision about your or your child's health, please consult your doctor.

Frequently asked questions

Q: Will special shoes correct bowlegs or flat feet? — No. Corrective shoes, insoles and arch supports do not change bone alignment in a growing child, and are sold in large numbers anyway.

Q: Does massage straighten legs? — No. Malish is good for other reasons and does not affect bone alignment.

Q: Did carrying my baby on my hip cause it? — No. Nor did baby walkers, nor standing early. Normal bowing is developmental.

Q: When should flat feet be treated? — When they are painful, stiff, or affecting how a child walks or how long they can be on their feet. Flexible painless flat feet in a young child need nothing.