The Ponseti method is the standard treatment for talipes equinovarus, commonly known as clubfoot. It corrects the deformity through a series of gentle manipulations and plaster casts, typically achieving full correction in six to eight weeks when started early. With a success rate of about 93.5% over five years, the Ponseti method has largely replaced the need for major corrective surgery.
How the Ponseti Method Works
Treatment ideally begins within the first two to six weeks of life, when a newborn’s ligaments and tendons are still highly flexible. Each week, a specialist gently stretches and repositions the foot, then applies a plaster cast from toes to upper thigh (with the knee bent at a right angle) to hold the correction in place. The cast stays on until the next session, when the foot is stretched a little further and a new cast is applied.
Most babies need five to seven casts to fully correct the foot’s position. Even unusually stiff feet rarely require more than eight or nine. Some clinics now change casts every five days rather than weekly, which shortens the overall timeline. Each cast builds on the last, gradually bringing the foot from its turned-in, downward-pointing position into proper alignment.
Doctors track progress using a clinical scoring system called the Pirani score, which evaluates six physical signs: the depth of creases on the back and inner side of the foot, heel firmness, ankle stiffness, curvature of the foot’s outer edge, and the position of a key ankle bone. Each sign is scored from 0 (normal) to 1 (severe), and the total guides decisions about how many more casts are needed and whether a minor procedure will be required next.
The Achilles Tendon Release
After casting corrects the foot’s shape, roughly 85% of babies still have tightness in the Achilles tendon that prevents the foot from flexing upward properly. This is corrected with a small, quick procedure called a percutaneous tenotomy. A doctor uses a thin blade or needle to release the tendon through a tiny skin puncture, usually under local anesthesia. It is not open surgery. The tendon regrows at the correct length over the following weeks while the baby wears a final cast for about three weeks.
The tenotomy is planned once the midfoot deformity is fully corrected by casting. It is a routine, expected step in the Ponseti protocol rather than a sign that something has gone wrong.
Bracing After Correction
Correction is only half the battle. Without consistent bracing, the foot tends to drift back toward its original position. Noncompliance with bracing is the single most common cause of relapse, with noncompliance rates reaching as high as 61% in some studies. Families who stick with the bracing schedule see dramatically fewer recurrences.
The brace (called a foot abduction brace) consists of small shoes or boots attached to a bar, holding both feet in an outward-rotated, slightly flexed position. For babies corrected before nine months of age, the typical schedule looks like this:
- First three months: 23 hours per day
- Gradual weaning: over the next several months, wear time drops in stages, from around 20 hours down to 14 to 16 hours per day
- Nighttime and naps: 12 to 14 hours per day, continuing until age four or five
For children corrected at older ages, initial brace time starts somewhat lower (18 to 20 hours per day), but nighttime bracing still continues through age four to six. The most common reason parents struggle with the brace is that it disrupts their baby’s sleep, which is also the main driver of noncompliance after the second year.
Several brace designs are available, including the traditional Denis Browne bar and the Mitchell brace, which adds an ankle support component. Studies comparing the two show no difference in correction rates, compliance, or long-term outcomes. Both hold the feet at 70 degrees of external rotation. The Mitchell design may feel more secure because it’s harder for the foot to slip out of the shoe, but families using either type report similar satisfaction. Cost and personal preference are reasonable factors in choosing between them.
The French Functional Method
An alternative to the Ponseti method, the French functional method replaces plaster casts with daily physical therapy. A trained therapist gently mobilizes the foot, stretches tight tissues, and stimulates weakened muscles, then tapes and splints the foot to maintain the day’s correction. Parents learn the technique and continue therapy at home until the child reaches walking age. A lightweight below-the-knee splint is worn until age two or three to prevent recurrence.
Research comparing the two approaches has found them equally effective at correcting the deformity. The French method requires more frequent visits and a greater daily time commitment from parents, which is why the Ponseti method remains more widely used worldwide. In practice, the choice often depends on what’s available locally and what fits a family’s circumstances.
When Surgery Becomes Necessary
Major surgery is rarely needed when the Ponseti method is followed properly. In a five-year study of 200 children, only 9% were referred for surgery. The situations where surgical release of the foot’s soft tissues becomes necessary are specific: a foot that does not improve with casting, a joint that remains stuck out of place despite manipulation, persistent downward stiffness that casting cannot overcome, or repeated relapse from brace noncompliance. Late presentation, particularly in settings where children don’t receive treatment as newborns, also increases the chance that casting alone won’t be enough.
When surgery is performed, the goal is a pain-free, flat-standing foot. However, primary surgical intervention has fallen out of favor because long-term follow-up shows it often results in a stiffer, more painful foot compared to feet corrected with the Ponseti method. Surgery is now considered a last resort rather than a first-line treatment.
What Drives Relapse
Even after successful correction, clubfoot has a natural tendency to recur during the first several years of life. The main risk factor is inconsistent brace use. In one study, noncompliant families had significantly higher odds of their child’s deformity returning. Regular clinical monitoring through infancy and early childhood is recommended to catch early signs of relapse, when a short course of recasting can often restore correction without surgery.
Children who do experience a relapse typically go through another round of Ponseti casting, sometimes followed by a repeat tenotomy. If the relapse is severe or happens repeatedly, a minor surgical procedure to transfer a tendon in the foot can help prevent further recurrence. Full open surgical release remains the final option if all else fails.