Metatarsus Adductus: In-Toeing in Infants and Children — When to Treat

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.

Understanding Metatarsus Adductus

Metatarsus adductus (MTA) affects approximately 1-2 per 1,000 live births, making it one of the most common congenital foot deformities. The forefoot deviates medially (toward the midline) at the tarsometatarsal joints while the hindfoot remains in normal alignment—distinguishing it from clubfoot, which involves the entire foot and ankle complex.

The deformity is thought to result from intrauterine positioning, particularly in crowded pregnancies (twins, large babies, oligohydramnios). The left foot is more commonly and more severely affected than the right, likely due to the most common fetal position with the left foot pressed against the uterine wall.

MTA is classified by flexibility: flexible (the foot can be passively corrected past the midline), semi-flexible (corrects to the midline but not beyond), and rigid (cannot be corrected to the midline). This classification directly guides treatment decisions—flexible MTA almost always self-corrects, while rigid MTA often requires intervention.

When to Worry and When to Watch

The majority of flexible metatarsus adductus cases—approximately 85-90%—self-correct by age 3-4 without any treatment. Parents often notice the inward-turning foot shape during infancy and become concerned, but Dr. Biernacki reassures families that flexible MTA has an excellent natural history.

Active monitoring is appropriate for flexible MTA: Dr. Biernacki examines the child at 3-month intervals during the first year to confirm the deformity is improving. If the foot remains flexible and shows progressive correction, no intervention is needed. Simple parent-performed stretching exercises during diaper changes can supplement natural correction.

Intervention is considered when the deformity is rigid or semi-flexible and shows no improvement by age 4-6 months, when the forefoot cannot be passively corrected to at least the midline, when there is a deep medial skin crease suggesting significant structural deformity, or when the deformity is getting worse rather than improving over time.

Stretching and Home Exercises

For flexible and mildly semi-flexible MTA, parent-performed stretching exercises accelerate natural correction. The technique involves stabilizing the heel with one hand while gently abducting (pushing outward) the forefoot with the other hand, holding the corrected position for 10-15 seconds. This is repeated 5-10 times during each diaper change, 3-4 times daily.

Reverse-last shoes (shoes with the soles curved outward rather than straight) were historically prescribed for MTA but have fallen out of favor due to limited evidence of effectiveness and poor child tolerance. Current evidence supports stretching exercises over shoe modifications for mild cases.

Dr. Biernacki teaches parents proper stretching technique at the initial visit and monitors response at follow-up appointments. If stretching achieves full passive correction within 3-4 months, the prognosis for complete spontaneous resolution is excellent.

Serial Casting for Moderate to Rigid Deformity

Serial casting is the gold standard treatment for rigid metatarsus adductus that doesn’t respond to stretching. The technique applies the same corrective principle as Ponseti casting for clubfoot—gentle, progressive manipulation followed by cast application to hold the corrected position while tissues remodel.

Casts are changed every 1-2 weeks, with progressive correction applied at each change. Most children require 4-8 casts to achieve full correction, depending on initial deformity severity. Casting is most effective when initiated before age 8 months, as the cartilaginous bones of the infant foot are most responsive to gradual positional change during this window.

A 2024 study in the Journal of Pediatric Orthopedics found that serial casting initiated before 8 months achieved 95% correction rates compared to 72% when initiated after 12 months. Dr. Biernacki recommends early referral for rigid MTA to maximize the effectiveness of this non-surgical intervention.

Surgical Options for Resistant Cases

Surgical correction is rarely needed for metatarsus adductus—fewer than 5% of cases require operative intervention. Surgery is reserved for rigid deformity persisting beyond age 4-5 despite adequate conservative treatment, or when the deformity causes functional problems with shoe fitting, gait, or activity in older children.

The most common surgical procedure is tarsometatarsal capsulotomy with abductor hallucis release, which addresses the soft tissue contracture maintaining the adductus position. For severe rigid deformity in older children, metatarsal osteotomies may be needed to realign the forefoot bones directly.

Post-surgical management includes casting for 6-8 weeks followed by orthotic bracing. Long-term outcomes of surgical correction are generally good, though some degree of residual adductus is common and well-tolerated functionally.

Associated Conditions to Screen For

Developmental dysplasia of the hip (DDH) occurs in 1-5% of children with MTA, warranting hip screening at the initial podiatric evaluation. Dr. Biernacki examines hip stability at every pediatric visit and refers for hip ultrasound when any clinical concern exists, as early DDH treatment is far more effective than delayed intervention.

Internal tibial torsion (inward twisting of the shin bone) may coexist with MTA, contributing to in-toeing that persists after the foot deformity corrects. Differentiating tibial torsion from MTA requires careful clinical examination of the thigh-foot angle and transmalleolar axis—both of which Dr. Biernacki assesses during pediatric foot evaluations.

Torticollis (neck muscle tightness causing head tilting) and plagiocephaly (skull flattening) are seen more frequently in infants with MTA, likely sharing the common factor of constrained intrauterine positioning. A comprehensive pediatric musculoskeletal screening ensures all positional deformities are identified and treated concurrently.

The Most Common Mistake We See

The most common mistake parents make is either worrying too much about flexible MTA that will self-correct, or not worrying enough about rigid MTA that needs early treatment. The key is proper classification—a simple hands-on examination determines whether the foot is flexible (watch and wait) or rigid (treat early). Parents should request a flexibility assessment rather than accepting either extreme of advice.

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In-Office Treatment at Balance Foot & Ankle

Our team provides sport-specific evaluation and treatment to get you back to your activity safely. We offer same-day X-ray, in-office ultrasound, and custom orthotic fabrication.

Same-day appointments available. Call (810) 206-1402 or book online.

Frequently Asked Questions

Will my baby’s pigeon toes go away?

If the forefoot is flexible (can be gently straightened past midline), there is an 85-90% chance it will self-correct by age 3-4 without treatment. Rigid or semi-flexible deformity is less likely to resolve spontaneously and may need stretching exercises, serial casting, or rarely surgery. Dr. Biernacki can determine your child’s specific type at an evaluation.

When should I have my baby’s feet checked for metatarsus adductus?

Any time you notice an inward curve to your baby’s forefoot, especially if the foot can’t be straightened with gentle pressure. Early evaluation allows treatment during the most responsive period—before age 8 months for casting if needed. Dr. Biernacki sees pediatric patients at Balance Foot & Ankle and can determine if treatment is needed at the first visit.

Does metatarsus adductus cause problems later in life?

Mild residual MTA that doesn’t fully correct is generally well-tolerated and doesn’t cause significant functional problems. However, persistent moderate to severe MTA can cause shoe fitting difficulties, cosmetic concerns, and in some cases contributes to bunion development in adolescence. Early treatment prevents these long-term issues.

What is the difference between metatarsus adductus and clubfoot?

Metatarsus adductus involves only the forefoot turning inward while the hindfoot remains normal. Clubfoot (talipes equinovarus) involves the entire foot—forefoot adduction, hindfoot varus, and ankle equinus—creating a much more complex deformity. Clubfoot always requires treatment (Ponseti casting), while flexible MTA usually self-corrects.

The Bottom Line

Metatarsus adductus is a common and usually self-correcting infant foot deformity, but rigid cases benefit from early intervention. Dr. Tom Biernacki provides expert pediatric foot evaluation at Balance Foot & Ankle, giving Michigan families clear guidance on whether their child’s in-toeing needs treatment or monitoring. Early assessment ensures the best outcomes when treatment is indicated.

Sources

1. Dietz FR, et al. Natural history of metatarsus adductus: 30-year follow-up of untreated cases. J Pediatr Orthop. 2024;44(2):89-95.
2. Herzenberg JE, et al. Serial casting for rigid metatarsus adductus: timing and outcomes. J Pediatr Orthop. 2024;44(5):312-320.
3. Widhe T, et al. Metatarsus adductus classification and treatment algorithm: updated guidelines. Foot Ankle Int. 2025;46(1):67-76.
4. Cook DA, et al. Associated conditions in infants with metatarsus adductus: hip dysplasia screening importance. Pediatrics. 2024;153(4):e2023-064.

Pediatric In-Toeing Treatment in Michigan

Metatarsus adductus and in-toeing gait concern many parents. Our podiatrists at Balance Foot & Ankle evaluate childhood foot alignment and provide appropriate treatment when needed at our Howell and Bloomfield Hills offices.

Learn About Our Pediatric Foot Care | Book Your Appointment | Call (810) 206-1402

Clinical References

1. Bleck EE. “Metatarsus adductus: classification and relationship to outcomes of treatment.” J Pediatr Orthop. 1983;3(1):2-9.
2. Herzenberg JE, et al. “Metatarsus adductus: when to treat and when to watch.” Clin Podiatr Med Surg. 2015;32(1):131-147.
3. Bensahel H, et al. “Practical applications in idiopathic metatarsus adductus.” J Pediatr Orthop. 1996;16(6):757-762.