Question 1

My 4-month-old baby's feet curve inward and look like bananas—the pediatrician says it's metatarsus adductus and will probably resolve on its own. Should I be doing something more active to fix it?

Accepted Answer

For flexible metatarsus adductus in a 4-month-old, the pediatrician's advice is appropriate—85-90% of flexible cases resolve spontaneously by 12-18 months with stretching and observation. Here's what you should know: FLEXIBILITY IS KEY: Did the pediatrician test if your baby's forefoot can be passively straightened (gently pushed outward to neutral or beyond)? If yes—flexible metatarsus adductus with excellent prognosis. If no (foot resists correction)—rigid deformity requiring different approach. WHAT YOU SHOULD BE DOING: Stretching exercises—CRITICAL for encouraging resolution. Technique: Hold heel firmly with one hand, use other hand to gently push forefoot outward (away from midline), hold 5-10 seconds, repeat 10-15 times at each nappy change. Goal: 30-40 stretches per day. Don't force it—gentle, consistent stretching works better than aggressive manipulation. Tummy time—place baby on stomach for play. This naturally positions feet in stretched position and encourages correction. Avoid restrictive footwear—soft, flexible shoes or barefoot best. Tight shoes can worsen deformity. MONITORING: Monthly follow-up appointments for first 4-6 months to track progress. Pediatrician should reassess flexibility and severity at each visit. WHEN TO ESCALATE: If by 6-9 months forefoot not improving or becoming more rigid, discuss referral to pediatric orthopedic surgeon for serial casting. Casting works best before walking age (6-12 months) so don't delay if not improving. If deformity becoming MORE flexible and less noticeable, continue observation—resolution likely. WHY WAITING IS OK (FOR NOW): Flexible metatarsus adductus is a benign positional deformity, not structural bone problem. Feet are highly moldable in infancy, especially first year. Natural growth and stretching often corrects deformity. Casting or surgery not needed unless deformity persisting beyond 6-9 months or rigid. BOTTOM LINE: At 4 months with flexible deformity, stretching exercises plus observation is appropriate first-line management. Be diligent with stretches (30-40 per day) and monthly monitoring. If not improving by 6-9 months, time to consider casting. Don't stress yet—vast majority of flexible cases like your baby's resolve beautifully.

Question 2

My child is 18 months old and still has curved feet—they've started walking and I notice they trip a lot. The doctor is now recommending serial casting. Why wasn't this done when they were younger, and will casting still work at this age?

Accepted Answer

This is understandable frustration. The approach to metatarsus adductus has evolved, and timing of intervention depends on deformity severity and flexibility. Here's the reasoning: WHY OBSERVATION FIRST: If your child had flexible metatarsus adductus at birth, standard approach is stretching and observation for first 6-12 months because 85-90% resolve spontaneously. Casting all babies with flexible deformity would subject many to unnecessary treatment. However, if deformity was moderate-severe or rigid from the start, earlier casting (at 6-9 months) may have been warranted. It's possible: (1) Deformity initially appeared mild/flexible and was expected to resolve; (2) Flexibility or severity not adequately assessed early; (3) Parents didn't maintain stretching exercises allowing deformity to worsen. WILL CASTING WORK AT 18 MONTHS: Yes, serial casting can still be effective at 18 months, though success rates slightly lower than in younger infants: Under 12 months—90% success with casting. 12-24 months—75-85% success. Over 24 months—60-70% success (foot becoming more rigid, bones starting to remodel in abnormal position). Your child is in the intermediate zone where casting still has good chance of working but window closing. TRIPPING CONCERNS: Inward-curved forefoot causes in-toeing gait (feet point inward when walking) leading to tripping, especially as walking improves. This is functional impairment justifying treatment now. Left untreated into school age, causes: awkward gait, shoe-fitting problems, cosmetic concerns, possible long-term foot pain. WHAT TO EXPECT WITH CASTING NOW: Ponseti-style serial casting: 5-7 weekly casts to progressively straighten forefoot. Challenging at 18 months (child is mobile, active) vs infant who doesn't walk yet. Child may be frustrated in casts but manageable. After casts, likely need night-time bracing (straight-last shoes or Denis-Browne bar) for 6-12 months to maintain correction. Critical: must comply with bracing or correction will relapse. Success likely (75-85%) but not guaranteed. ALTERNATIVE IF CASTING FAILS: If casting doesn't achieve adequate correction by age 2-3 years, options are: (1) Continued observation hoping remaining growth helps (less likely at this age); (2) Surgery at age 4-5 years if significant functional/cosmetic problems. RECOMMENDATION: Proceed with casting now. It's not too late and avoids surgery. Commit to bracing program after casting. If you have concerns about why casting wasn't offered earlier, respectfully ask doctor to review earlier records and explain decision-making—helps you understand and builds trust for ongoing care.

Medical disclaimer

Curved Baby Foot (Metatarsus Adductus)

Overview

What is Curved Baby Foot (Metatarsus Adductus)?

What causes it?

Risk factors

You may be at higher risk if:

Prevention