Clubfoot
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Clubfoot, also referred to as congenital clubfoot or congenital talipes equinovarus, is a complex developmental deformity of the foot and lower leg present at birth. It involves a fixed positioning of the foot in plantar flexion, inversion, adduction, and cavus. The osteoarticular changes are accompanied by contractures of ligaments, tendons, and muscles, as well as a reduction in calf circumference. The defect may affect one or both limbs and occur independently or as part of a neurological disease, genetic syndrome, or multiple congenital anomalies. The primary method of treatment for the idiopathic form is the Ponseti method, initiated in early infancy and supplemented by the long-term use of an abduction brace.
Clubfoot - what it looks like
A typical clubfoot has the sole directed inward and backward. The deformity is three-dimensional and consists of several interrelated components, designated by the acronym CAVE:
- cavus, i.e., an excessively high medial longitudinal arch resulting, among other things, from plantar flexion of the first ray;
- forefoot adductus, through which the toes and anterior part of the foot point toward the midline of the body;
- hindfoot varus, i.e., an inward position of the heel;
- equinus, associated with plantar flexion at the ankle joint and shortening of the triceps surae muscle complex and the Achilles tendon.
The heel is usually small, elevated, and difficult to grasp during examination. Deep skin creases may appear on the medial and posterior surfaces of the foot. In the unilateral form, the affected foot may be shorter, and the calf more slender. The difference in lower leg circumference may also persist after successful correction.
The structural defect is rigid and demonstrates limited susceptibility to passive alignment into the correct position. This feature distinguishes it from postural clubfoot, which is a flexible consequence of the fetus's position in the uterus. The idiopathic variant can be mild, moderate, severe, or atypical. The external appearance represents only a part of the disorder, as the relationships between the talus, calcaneus, navicular, and metatarsal bones are also altered.
Clubfoot - where does it come from
The most common is idiopathic clubfoot, the development of which is associated with the interplay of genetic predisposition and factors affecting the embryonic development of the limb. Family and twin studies confirm a hereditary risk component, but the typical presentation of the deformity usually results from the contribution of multiple genes with moderate effects. Described mechanisms include developmental disorders of muscles, tendons, vessels, and bone primordia of the foot.
The prevalence varies between populations and averages approximately one case per thousand live births. The deformity occurs more frequently in boys. Approximately half of the cases involve both feet. Having a child with the deformity increases the likelihood of its occurrence in subsequent offspring, especially in the presence of similar cases in the family.
A distinct group is formed by clubfeet that are:
- syndromic, occurring in the course of congenital malformation syndromes;
- neurogenic, associated with, among others, myelomeningocele, spinal cord injury, or neuromuscular diseases;
- atypical or complex, characterized by significant rigidity, a deep plantar crease, a short first toe, and a tendency to slip out of the cast;
- secondary, developing as a consequence of neurological or post-traumatic disorders.
Syndromic and neurogenic forms more often require a greater number of casts, a modified protocol, and surgical treatment. Their tendency to relapse is greater than in an isolated idiopathic deformity.
Clubfoot - how to recognize it
The diagnosis is often made during a prenatal ultrasound examination, particularly in the second trimester of pregnancy. An image of the foot and lower leg bones visible simultaneously in the same plane suggests malalignment. A prenatal finding requires an evaluation of the entire fetal anatomy, as the presence of other abnormalities may indicate a syndromic or neurological form. An isolated ultrasound suspicion is confirmed after birth by clinical examination.
Assessment of the newborn includes the appearance of both limbs, joint mobility, muscle tone, skin condition, blood supply, sensation, and the search for other anomalies. The physician checks the correctability of the deformity, the position of the heel, the range of dorsiflexion, and the presence of skin creases. Particular attention is paid to the spine, hips, knees, hands, and neurological development.
The severity of the defect can be documented using clinical scales:
- the Pirani scale evaluates six features of the hindfoot and midfoot;
- the Diméglio scale takes into account the range of passive correction of individual components of the deformity and features increasing its severity.
The scales facilitate monitoring progress, but therapeutic decisions result from the overall clinical picture. X-rays usually have limited value in a newborn, as a significant part of the foot skeleton remains cartilaginous. Imaging, neurological, or genetic tests are selected in cases of an atypical presentation, asymmetry, muscle weakness, dysmorphic features, or suspected coexisting disease.
Clubfoot - Ponseti method
The Ponseti method is the global standard of treatment for idiopathic clubfoot. It is best to start therapy in the first weeks of life, when tissues show high malleability. Effective correction is also possible in children presenting later, although the treatment may take longer.
Treatment proceeds in stages:
- the orthopedist performs gentle, precisely directed manipulation;
- applies a long leg cast maintaining the achieved correction;
- the cast is usually changed weekly;
- first, cavus is corrected, followed by adduction and varus;
- the equinus position of the foot is corrected last.
Premature upward lifting of the foot while varus persists risks developing a rocker-bottom foot deformity. The key principle is abducting the foot around the head of the talus, without pressure blocking the calcaneus.
In most children, shortening of the Achilles tendon remains. A percutaneous tenotomy—a controlled cutting of the tendon—is then performed, followed by the application of a final cast for the healing period. The tendon restores its continuity in an elongated position.
After correction, the maintenance phase begins using two shoes connected by an abduction bar. Initially, the brace is worn for most of the day, and later during sleep, usually until the fourth or fifth year of life. Consistent use of the brace is one of the most important factors reducing the risk of recurrence. Physiotherapy alone, massage, or standard orthopedic footwear are complementary and do not replace casting, tenotomy, or the brace.
Clubfoot - prognosis and living with correction
In idiopathic clubfoot, a correctly conducted Ponseti method achieves initial correction in over ninety percent of children. Most patients develop a functional, plantigrade, and painless foot that allows walking, running, and participating in sports. The affected foot and calf may remain slightly smaller, which usually has primarily anatomical and cosmetic significance.
A recurrence may manifest as reduced dorsiflexion, the heel turning inward again, forefoot adduction, toe-walking, or dynamic supination during a step. The greatest risk occurs during periods of rapid growth, which is why multi-year orthopedic follow-up is necessary. An early recurrence often responds to remanipulation, a short series of casts, and resuming bracing. In older children with dynamic supination, a tibialis anterior tendon transfer is sometimes used. Extensive surgery remains a solution for resistant, residual, or neglected deformities.
Following completed correction, physiotherapy can support:
- the development of a proper gait pattern;
- ankle joint mobility;
- strength, balance, and coordination;
- a safe return to activity after surgical treatment;
- therapy for secondary overload in adolescents and adults.
In Ambasada Urody's offer, physiotherapy and manual therapy as well as INDIBA Med, used as support for orthopedic rehabilitation, are functionally related to the discussed issue. These methods can be used to treat pain, mobility restrictions, myofascial tension, and the consequences of overload in appropriately qualified older patients. The correction of congenital deformity in an infant is carried out by a specialized pediatric orthopedic team according to the Ponseti protocol.
