If your child’s arches look flat when they stand, you are not alone in noticing it. Flat feet (paediatric pes planus) are common in toddlers and young children because the bones, muscles, and ligaments are still developing, and a visible arch usually appears between ages 2 and 4. Many children outgrow it without trouble. Others develop tired legs, complain of heel or arch pain, trip more than peers, or quietly drop out of school sports and family walks.
The flat shape itself is rarely the problem. What matters is whether it causes pain, fatigue, or changes the way your child moves. A paediatric podiatry assessment can sort developmentally normal feet from feet that need a little support, so your child stays comfortable through PE, CCAs, and everyday play.
Symptoms of Flat Feet in Children
Children often do not say “my feet hurt”. They show it through behaviour. Watch for:
- The whole sole touching the ground when standing, with little or no visible arch.
- Tired legs after walking, or asking to be carried earlier than peers.
- Heel, arch, or shin pain, especially after sport or long days out.
- Frequent tripping, clumsy running, or trouble keeping up at the playground.
- Uneven shoe wear, often on the inner edge.
- Avoiding previously enjoyed sports or running activities.
Types of Flat Feet in Children
Flexible Flat Feet
The most common type. The arch is hidden when the child stands but reappears when they sit, lie down, or stand on tiptoes. Joints are usually mobile.
Rigid Flat Feet
Less common. The foot stays flat in every position, even when not bearing weight. This can point to bony fusion or other structural issues and warrants assessment.
Calcaneovalgus Foot in Newborns
Some babies are born with one or both feet turned sharply upward, so the top of the foot rests close to the front of the shin. This is calcaneovalgus foot, a positional posture that usually comes from the way the foot was folded against the wall of the womb in the final weeks before birth (intrauterine packing). The foot is almost always flexible, meaning it can be gently moved back into a neutral position, and it commonly settles on its own over the first weeks to months of life, often helped by simple stretches a parent can do at home. Because the arch can look low as the child grows, calcaneovalgus is frequently discussed alongside, and sometimes precedes, flexible flat feet.
The step that matters is separating a flexible calcaneovalgus foot from a congenital vertical talus, a rigid rocker-bottom deformity that does not correct with gentle handling. Congenital vertical talus holds the foot in a fixed, convex shape, with the heel pointing down and the midfoot bulging toward the sole, and it does not resolve with stretching, so it needs early specialist assessment and usually surgical correction. A newborn foot that stays stiff, cannot be brought to a neutral position, or has a firm rounded sole should be reviewed rather than watched.
Causes of Flat Feet in Children
What Causes Flat Feet in Children?
- Normal development, where arches are still forming under baby fat and soft tissue.
- Family history, since the structural tendency runs in families.
- Tight calf muscles or a tight Achilles, which pulls the arch downward, sometimes alongside toe walking.
- Hypermobile, very flexible joints that allow the arch to collapse under load.
- Underdeveloped foot and leg muscles from limited active play.
- Long-term use of unsupportive or ill-fitting shoes during the growing years.
Who Carries a Higher Baseline Risk?
- Children with a parent or sibling who has flat feet.
- Generalised joint hypermobility or ligament laxity.
- Connective tissue conditions such as Marfan or Ehlers-Danlos syndrome.
- Neuromuscular conditions such as cerebral palsy.
- Genetic conditions such as Down syndrome.
- Tight calves or shortened Achilles tendons.
Conditions Commonly Mistaken for Flat Feet in Children
Flat feet themselves are usually painless. When a child with flat feet does have pain, it often comes from a separate issue that shares the same territory and should be ruled out. A paediatric foot assessment helps tell these apart.
Sever’s disease
Sever’s disease is an irritation of the growth plate at the back of the heel, common in active children around 8 to 14. The pain sits at the heel and flares with running and jumping, whereas flat feet on their own are painless and the arch, not the heel, is the visible feature. The two can coexist, since a flatter foot can add load to the heel.
Posterior tibial tendinitis
Posterior tibial tendinitis is irritation of the tendon that runs along the inside of the ankle and helps support the arch. Pain and tenderness track along the inner ankle and arch, and the area tends to be sore to press, while a simple flat foot is not. In some children a painful, progressively flattening arch points to the tendon rather than to flexible flat feet.
Juvenile bunions
A juvenile bunion is a bump and angulation at the big toe joint, which can develop alongside flat feet but is a separate structural issue. The complaint sits at the big toe joint rather than the arch, so it is distinguished by where the change and any discomfort fall on the foot.
Knee or hip pain from altered alignment
Flatter feet can shift the way the leg loads, and some children present with aching at the knee or hip rather than the foot itself. The differentiator is the site of the complaint, which sits higher up the limb, so the assessment looks at the whole lower limb alignment rather than the foot in isolation.
Treating and Preventing Flat Feet in Children
The aim of treatment is not to “build an arch” but to keep your child comfortable, active, and moving well while their feet finish developing. Painless, flexible flat feet in young children may simply be monitored. When pain, tripping, or sports avoidance appears, support is added in stages.
Active play is part of treatment. Climbing, balance games, jumping, and barefoot play on safe surfaces help build the muscles that support the arch. Supportive shoes with a firm heel counter and adequate midsole stiffness reduce the strain on tendons during long school days. Stretches for tight calves are useful when calf tightness is part of the picture. Where pain, fatigue, or alignment changes persist, custom orthotics reduce excessive pronation so muscles and tendons can work efficiently. For children whose balance and coordination remain a struggle, supramalleolar orthoses add side-to-side stability during walking and running. Surgical correction is reserved for rare, severe cases.
Prevention overlaps with treatment. Choosing well-fitted shoes and following our guide to choosing kids’ footwear, encouraging active play, and seeking assessment when symptoms appear all help.
Have Your Flat Feet in Children Managed at Straits Podiatry
Paediatric foot conditions are seen at all three Straits Podiatry clinics in Buona Vista, Orchard, and Paya Lebar, where our podiatrists work with children of all ages. Straits Podiatry is part of Healthway Medical Group.
A paediatric flat foot assessment includes gait analysis, joint range testing, footwear review, and where indicated, custom orthotics, paediatric supramalleolar orthoses, footwear advice, and a monitoring schedule as your child grows.
Speak with Straits Podiatry or book a consultation for an assessment and a tailored approach to manage your child’s flat feet.
Frequently Asked Questions About Flat Feet in Children
Will my child grow out of flat feet?
Many children do. Flexible flat feet often improve as the arch, muscles, and ligaments mature, usually by ages 4 to 6. Some children do not outgrow them, especially those with hypermobility, family history, or a connective tissue condition. Outgrowing is not guaranteed and is not the right yardstick to wait on if your child is already in pain, tripping, or avoiding sport. Those symptoms warrant assessment now, regardless of age.
When should I worry about my child’s flat feet?
Worry less about the shape, more about the symptoms. Book an assessment if your child complains of foot, heel, arch, leg, or knee pain, fatigues quickly compared to peers, trips more than expected, avoids running or sports, has very uneven shoe wear, or has rigid flat feet that do not change shape when not weight-bearing. A paediatric podiatrist can sort what is normal development from what needs support.
Does my child need custom orthotics?
Not every child does. For painless, flexible flat feet within normal range, supportive shoes and active play may be enough. Custom orthotics are considered when pain, fatigue, balance issues, or alignment changes appear, or when conservative steps have not helped. The decision is made after a gait and biomechanical assessment, so the device is matched to the specific issue rather than the flat shape alone.
Can my child still play sports with flat feet?
Yes. Most children with flat feet play sport without trouble, and active play is actually encouraged because it strengthens the muscles that support the arch. The deciding question is whether sport causes pain or limits performance. If it does, supportive footwear, stretches, or orthotics often allow continued participation. Children rarely need to stop sport because of flat feet alone.
Will flat feet cause problems later in life?
Not always. Many adults with flat feet live without symptoms. Persistent, symptomatic flat feet in childhood can contribute to later heel pain, shin splints, knee or hip discomfort, or bunion progression because of altered foot mechanics. Addressing pain and alignment during the growing years reduces the risk of those carrying into adulthood, and gives your child more comfortable years of running, sport, and movement in between.