Childhood Flat Feet: When to Treat & Best Exercises

Development of the Foot Arch in Children

Childhood flat feet, medically termed pediatric pes planus, is characterized by the absence or collapse of the medial longitudinal arch of the foot. It is important for parents to know that flat feet are a normal part of early development:

• Infants and Toddlers (Under 3 Years): Almost all children have flat feet. This is due to a natural fat pad located in the instep (medial arch area) that cushions the developing bones, combined with joint laxity common in early childhood.
• Ages 3 to 6: As the child walks and runs, the muscles and ligaments in the feet strengthen, the fat pad resolves, and the arch begins to form naturally.
• Ages 7 to 10: The foot arch reaches its mature structure in the majority of children.

Flexible vs. Rigid Flat Feet

When evaluating childhood flat feet, pediatricians and physiotherapists classify the condition into two distinct groups:

1. Flexible Flat Feet (Non-Pathological)

This is the most common type. The foot looks flat when the child is standing, but a clear arch is visible when the child stands on their toes, lifts their big toe (the Jack's test), or when their feet hang off the edge of a chair. It is usually painless and does not affect the child's walking or activity level.

2. Rigid Flat Feet (Pathological)

This type is less common and is characterized by a stiff, flat foot that lacks an arch in all positions (standing, sitting, or toe-standing). It is often associated with structural anomalies such as tarsal coalition (abnormal fusion of two or more bones in the foot) or neurological conditions. Rigid flat feet are frequently painful and require evaluation by an orthopedic specialist.

Physiotherapy Exercises for Symptomatic Flat Feet

If a child has flexible flat feet that cause pain, fatigue, or frequent tripping, physiotherapy can help by stretching tight tissues and strengthening the muscles that support the arch:

1. Marble Pick-Ups (Intrinsic Muscle Strengthening)

• How: Place several marbles or small toys on the floor. Have the child sit on a chair and use their toes to pick up the marbles and drop them into a cup. Perform 10-15 repetitions per foot.
• Purpose: Strengthens the short muscles in the sole of the foot (intrinisics) that maintain the arch.
• Tip: This can also be done by having the child scrunch up a towel placed flat under their foot.

2. Heel Walks & Toe Walks

• How: Have the child walk across the room on their tiptoes for 1 minute, then walk back on their heels for 1 minute. Repeat 3 times.
• Purpose: Toe-walking strengthens the calf and posterior tibialis (a key arch stabilizer), while heel-walking strengthens the anterior shin muscles.

3. Calf Stretching (Gastrocnemius/Soleus Stretch)

• How: Have the child stand facing a wall, placing one leg back with the heel flat on the floor and knee straight, leaning forward until a stretch is felt in the calf. Hold for 20 seconds. Repeat 3 times per side.
• Purpose: Resolves tight calf muscles, which can pull the foot into a flat position.

4. Single-Leg Balance Activities

• How: Have the child practice standing on one foot while brushing their teeth or tossing a ball, progressing to balancing on a foam pad or balance board.
• Purpose: Challenges the stabilizers of the foot, ankle, and hip, improving overall balance.

If you have concerns about your child's walking style, consult a pediatrician or physical therapist. For more information, read our guide on developmental milestone delays or learn about pediatric rehabilitation services.

References

• Harris EJ et al. Diagnosis and treatment of pediatric flatfoot. Journal of Foot and Ankle Surgery. 2004.
• Halabchi F et al. Pediatric flexible flatfoot; clinical assessment, classification, and algorithms for management. Iranian Journal of Pediatrics. 2013.
• Evans AM et al. The flat-footed child — to treat or not to treat: what is the evidence? Journal of the American Podiatric Medical Association. 2008.