Most young children have flat feet, and it's a completely normal stage of development. The arch typically forms gradually between ages 2 and 5, and while up to a quarter of children still show some sign of flat feet at various stages, the vast majority outgrow it without any treatment. Even so, there are specific signs — pain, unusual fatigue, changes in how a child walks — that mean it's worth having their feet checked.
It's easy to worry the first time you notice your child's feet look completely flat when they stand. In most cases, that's simply where their feet are in normal development, and the arch will continue to form as ligaments and muscles mature. Knowing what's typical, and what's not, can save a lot of unnecessary worry — and help you catch the cases that do need attention.
What's actually happening with those little feet?
Babies and toddlers are born with a layer of baby fat in the arch area and ligaments that are naturally more flexible, both of which make the foot look flat even when development is right on track. As kids grow, walk, and run more, the arch gradually becomes visible — usually somewhere between ages 2 and 5, though it can take a bit longer for some children. Flat feet that persist without any pain or functional problems, sometimes called flexible flatfoot, rarely need intervention.
What should you actually watch for?
Flat feet on their own usually aren't a red flag. The things worth paying attention to are changes in comfort or behavior, including:
- Complaints of foot, ankle, knee, or hip pain after activity
- Getting unusually tired during play compared to other kids their age
- Clumsy walking, frequent tripping, or a noticeable limp
- Avoiding activities they used to enjoy, like running or sports
- Asking to be carried more often than usual
- Unusual wear patterns on shoes, especially heavy wear on the inside edge
Any one of these on its own isn't necessarily a cause for alarm, but a pattern of them together is worth mentioning to your pediatrician or a podiatrist.
What contributes to flat feet in kids?
Genetics play a large role in how a child's arch develops — flat feet often run in families. Tight or weak muscles and ligaments in the foot and lower leg can also affect arch formation, and footwear matters more than many parents expect. Shoes that fit poorly or offer little structure can make it harder for a developing arch to get the support it needs, which is one reason properly fitted, supportive shoes are especially important for active kids.
How is it evaluated?
An evaluation typically starts with watching your child stand, walk, and run, along with a hands-on exam to see whether the arch appears when they're not bearing weight (a sign of flexible flatfoot) and to check the flexibility of the ankle and foot. If there's any concern about a structural issue, tight tendons, or an underlying condition, imaging or a referral may be recommended to get a clearer picture.
What treatments actually help?
For children who need treatment, conservative options are typically effective and are always tried first. These include:
- Custom orthotics to provide extra arch support during growth
- Physical therapy focused on strengthening the muscles that support the arch
- Properly fitted, supportive footwear for daily activity and sports
- Stretching for tight calf or Achilles muscles when they're contributing to symptoms
Surgery is rarely necessary for pediatric flat feet and is reserved for severe, symptomatic cases that don't respond to conservative treatment.
When is it time to make an appointment?
Consider scheduling an evaluation if your child has ongoing pain in the feet, ankles, knees, or hips; if flat feet are interfering with their normal activities; if their walking pattern looks noticeably different from other kids their age; or if flat feet persist without any arch developing past age 6 or 7. Family history of foot problems or an underlying connective tissue condition are also good reasons to have things checked proactively. You can request an appointment at either of our Northern Utah offices.
Medically reviewed by the physicians at Wasatch Foot & Ankle Institute. Our board-certified, fellowship-trained podiatrists provide foot and ankle care in Farmington and South Ogden, Utah. This article is for general education and is not a substitute for an in-person evaluation.