Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026
The most important clinical decision with Flat Feet in Children: When to Worry, When to Treat & Orthotics Guide isn’t which treatment to choose — it’s identifying which subtype you have first. Our podiatrists see patients treated for the wrong subtype for months before the correct diagnosis leads to full resolution. Call (810) 206-1402 — expert podiatric care across Michigan.
Nearly all infants and toddlers have flat feet — the arch doesn’t typically develop until age 5–6. Most childhood flat feet are flexible, painless, and do not require treatment. However, rigid flat feet, painful flat feet, or flat feet that persist beyond age 8–10 with symptoms deserve evaluation. Balance Foot & Ankle provides pediatric flat foot evaluation in Howell and Bloomfield Hills, MI.
Flexible vs. Rigid Flat Foot — Critical Distinction
| Feature | Flexible Flat Foot | Rigid Flat Foot |
|---|---|---|
| Arch on tiptoe? | Yes — arch appears when child rises to toes | No — foot stays flat regardless of position |
| Pain | Usually none; may cause mild fatigue | Often painful; activity-limiting |
| Cause | Ligamentous laxity, normal variant, obesity | Tarsal coalition, vertical talus, accessory navicular |
| Treatment | Observation; orthotics if symptomatic | Investigation and often surgical correction |
| Prognosis | Excellent — most resolve or remain asymptomatic | Depends on underlying cause; variable |
When Does Flat Foot in Children Need Treatment?
| Indication | Action |
|---|---|
| Flexible flat foot, no pain, normal activity | Observation only; no treatment needed |
| Flexible flat foot with foot or leg fatigue/aching after activity | Arch-supportive shoes + OTC or custom orthotics |
| Flat foot with heel cord tightness (Achilles contracture) | Calf stretching + physical therapy + orthotics |
| Rigid flat foot (arch doesn’t form on tiptoe) | Evaluate for tarsal coalition or vertical talus; imaging required |
| Peroneal spasm with flat foot in adolescent | Rule out tarsal coalition; MRI or CT |
| Flat foot with severe in-toeing or out-toeing | Evaluate for rotational/tibial torsion component |
| Flat foot persisting with pain past age 10 | Podiatry evaluation; consider custom orthotics or accessory navicular evaluation |
Do Children Need Orthotics for Flat Feet?
Research consistently shows that orthotics do not change the long-term development of the arch in children with flexible flat feet. However, custom orthotics effectively reduce symptoms — fatigue, pain during activity — in children who are uncomfortable. They are not harmful and may improve walking mechanics while symptoms are present.
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- OTC arch-supportive insoles — appropriate for mild symptoms; less expensive starting point
- Custom orthotics — indicated for moderate-severe symptoms, heel cord tightness, or structural concerns; takes 3–4 weeks to fabricate from a 3D scan or plaster cast of the child’s foot
- UCBL orthosis — deep heel cup with medial/lateral flange; used for more significant flexible flat feet in younger children
- Supportive footwear — avoid going barefoot on hard floors; firm-soled shoes with arch support
Surgical Options for Flat Feet in Children
| Procedure | Indication | Age Range |
|---|---|---|
| HyProCure / Maxwell-Brancheau arthroereisis (subtalar implant) | Flexible flat foot, skeletally immature, symptomatic despite orthotics | 8–13 years (open physis) |
| Calcaneal lengthening osteotomy (Evans) | Moderate-severe flexible flat foot, older child | 10–15 years |
| Medial displacement calcaneal osteotomy | Severe valgus hindfoot | Adolescent |
| Gastrocnemius recession | Tight heel cord contributing to flat foot | Any age when indicated |
| Tarsal coalition resection | Rigid flat foot with confirmed coalition | After symptoms develop; typically 10–16 |
Red Flags That Require Urgent Evaluation
- Sudden development of flat foot after previously normal arch
- Rigid foot that stays flat regardless of tiptoe or position
- Peroneal muscle spasm with involuntary valgus foot posture
- Neurological symptoms (weakness, numbness) along with flat foot
- Flat foot with systemic hypermobility syndrome (Marfan, Ehlers-Danlos) — higher risk of progressive collapse
Schedule a pediatric flat foot evaluation at Balance Foot & Ankle in Howell (4330 E Grand River Ave) or Bloomfield Hills (43494 Woodward Ave #208). Call (810) 206-1402.
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Doctor Answer
Are flat feet in children a concern and when do they need treatment?
Flat feet are normal and universal in infants and toddlers — arch development continues until age 6-10. Most children’s flat feet are flexible, painless, and require no treatment. I evaluate flat feet when they are rigid (do not form an arch on tiptoe), causing pain, associated with tight Achilles tendons, asymmetric, or failing to improve after age 10. Symptomatic flexible flat feet may benefit from supportive footwear and custom orthotics during growth. Rigid flat feet or those associated with tarsal coalition require more detailed imaging and possibly surgical intervention.
Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has made him one of the most-followed foot & ankle educators on YouTube.