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Universal Neonatal Foot Orthotics

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What is Metatarsus Adducutus?

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About Metatarsus Adductus

Congenital Metatarsus Adductus, Metatarsus Varus, Forefoot Adduction, Calcaneovalgus, Skewfoot
The metatarsus bones are a group of five long bones that run lengthwise down the middle section of the human foot, from the toes.
Metatarsus Adductus also known as Metatarsus Varus, Forefoot Adduction, Calcaneovalgus, Skewfoot, Metatarsus Primus Varus, is a congenital foot deformity is commonly seen in newborns and young infants in which the Metatarsus bones angle towards the hindfoot, or heel.
This causes the foot to become C-shaped, with a concave inner border and convex outer border.
The cause of MTA is not certain but is believed to be due to the child being tightly positioned in the mother’s womb during fetal development.
MTA occurs more frequently in twin births, first-born children, and infants with a family history of the condition.
Prospective studies reported the incidence of MTA as about 5 percent of live births, with 65 percent suffering from bilateral MTA.
The global yearly incidence of metatarsus adductus is estimated at nearly 6.8 million patients. Statistically, a child with MTA is born every five seconds.

Intoeing- pigeon-toed (internal rotation of feet)

These anomalies are caused by internally rotated thighs, legs, or feet. The diagnosis is very simple and baby caregivers, orthotics or physiotherapists can easily specify the problem.
A great number of the In-toeing or pigeon toes cases are due to metatarsus adductus (MTA) , and this is actually the only type of In-toeing that successfully is treated by UNFO or serial castings.
It is important to emphasize that early treatment before the age of 6 months is essential for successful results.

Prognosis of Metatarsus Adductus

The natural history of MTA is controversial, and treatment methods lack satisfactory outcome data.
Many clinicians recommend observation in the hope of spontaneous resolution.
In spite of this, clinicians tend to agree that earlier treatment is safer, more effective, and easier than later treatment (whilst parents simply want to be ensured that their child’s foot or feet will develop and grow normally).
As an accurate prognosis is not predictable, treatment should be recommended in most cases.
When left untreated, MTA can cause complications like pain, foot discomfort, wearing shoe problems, and secondary deformities like bunions and skin corns.
The UNFO device is an excellent treatment approach for MTA deformity in infants. The treatment permits either full-time or nighttime usage according to the severity of the foot deformity as well as for maintenance after active treatments.

Frequently Asked Questions About Metatarsus Adductus

Metatarsus adductus is one of the most common foot deformities in infants. It happens when the front part of the baby’s foot curves inward, creating the appearance many parents describe as “pigeon toed” or “intoeing.” Some cases are very mild and flexible, while others are more rigid and noticeable. Early evaluation helps parents understand the severity and whether treatment such as UNFO may be beneficial during infancy.

Some mild and flexible metatarsus adductus cases improve naturally as babies grow. However, not all cases self-correct. Studies suggest that approximately 11–14% of mild cases remain persistent and eventually require treatment. The likelihood of spontaneous correction decreases in moderate and severe deformities, which is why many parents choose early orthopedic evaluation and explore conservative treatment options like UNFO before walking begins.

Parents often notice that severe metatarsus adductus looks more rigid, less flexible, and harder to straighten gently by hand. In some babies, the inward curve remains fixed even during relaxation. Orthopedic specialists usually evaluate flexibility, symmetry, and foot alignment to determine severity. Research on UNFO has shown successful correction even in many moderate and severe cases when treatment begins early.

Most babies with metatarsus adductus are not in pain during infancy. The concern is usually not immediate discomfort, but how the foot develops over time. In persistent or severe cases, untreated deformities may later affect walking patterns, balance, shoe fitting, or overall alignment. Early conservative approaches such as UNFO are designed to gently correct the foot while babies are still highly adaptable.

The first 9 months of life are often considered the ideal period for conservative treatment because infant feet are still soft and moldable. Pediatric orthopedic research consistently shows that earlier treatment tends to be easier and more effective than waiting until after walking begins. This is one reason UNFO was specifically developed for babies under 9 months with metatarsus adductus and intoeing deformities.

No. While casting has traditionally been used for more severe cases, many parents today look for alternatives that feel less restrictive and easier to manage during infancy. UNFO was developed as a below-ankle orthotic system designed to help correct metatarsus adductus without the challenges many families experience with full casts.

Yes. Published research on UNFO included many moderate, severe, and rigid metatarsus adductus cases. Studies reported high correction rates even among severe deformities when treatment began during early infancy. This is important because many parents assume severe cases automatically require surgery later, but early conservative treatment can often be highly successful.

That depends on the flexibility and severity of the deformity. Some mild cases are monitored first, while more rigid or persistent cases may benefit from earlier intervention. Many parents choose evaluation early not because they want aggressive treatment, but because they want to understand all available options while their baby’s feet are still highly responsive to conservative correction methods like UNFO.

Don’t Wait and Wonder

Early treatment means more options, gentler correction, and better flexibility while your baby is still under 9 months.Explore how UNFO helps treat metatarsus adductus and pigeon toed feet early.

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