Clubfoot (CTEV): Post-Ponseti Casting, Bracing, and Physiotherapy

Congenital Talipes Equinovarus (CTEV), universally referred to as clubfoot, is one of the most common congenital musculoskeletal deformities, characterised by four primary structural components: cavus (high medial arch), adductus (forefoot turned medially), varus (calcaneus inverted), and equinus (rigid ankle plantarflexion), abbreviated by the clinical acronym CAVE. Globally and throughout India, the Ponseti method is the gold-standard conservative treatment, achieving initial full correction in over ninety-five percent of cases through gentle, weekly serial manipulation and above-knee plaster casting, followed by percutaneous Achilles tenotomy. However, the greatest clinical challenge in clubfoot management is preventing relapse. The biological tendency for clubfoot contractures to recur remains active until four to five years of age. Successful long-term outcomes depend entirely on strict adherence to Foot Abduction Bracing (FAB) and structured paediatric physiotherapy.

Domestic and Cultural Indian Realities

In India, clubfoot is traditionally associated with severe social stigma, occasionally resulting in infant abandonment or maternal ostracization. While Ponseti clinics run by government programmes (such as the Rashtriya Bal Swasthya Karyakram - RBSK) provide free initial casting, adherence to the post-casting brace (the Steenbeek Foot Abduction Brace) often breaks down at home. The rigid metal bar connecting the shoes makes infant handling awkward, and the baby frequently cries during the initial days of brace fitting. Frustrated grandmothers and busy parents often remove the brace for days at a time, leading to rapid, silent clubfoot relapse. Paediatric physiotherapists must serve as dedicated parent coaches, guiding families through the critical first week of brace adaptation and providing local community follow-up.

Clinical Biomechanics and Neurological Development

The pathomechanics of clubfoot involve dense fibroblastic collagen hyperplasia within the posterior and medial ligaments and tendons (Achilles tendon, tibialis posterior, spring ligament, and deltoid ligament). During the Ponseti correction sequence, the lateral head of the talus serves as the fixed mechanical fulcrum. Manipulating the forefoot into supination and abduction gradually rotates the calcaneus outward from beneath the talus, correcting cavus, adductus, and varus simultaneously. Percutaneous tenotomy releases the contracted Achilles tendon to correct equinus. Once corrected, the Foot Abduction Brace maintains the feet in 60 to 70 degrees of external abduction (40 degrees for the unaffected foot in unilateral cases) and 10 to 15 degrees of dorsiflexion, providing the continuous low-load stretch needed to prevent collagen cross-linking relapse.

Clinical Assessment and Developmental Staging

Clinical staging utilizes the Pirani Scoring System (scoring 6 clinical signs across the hindfoot and midfoot from 0 to 6) or the Dimeglio Scale. A Pirani score is recorded at every clinic visit: 0 indicates full correction, while rising scores signal emerging relapse. The clinician checks passive ankle dorsiflexion with the knee straight (should reach at least 15 to 20 degrees beyond neutral) and evaluates active eversion (peroneal muscle recruitment) during spontaneous kicking.

Targeted Rehabilitation and Mobility Exercises

Physiotherapy combines strict brace adherence management with gentle passive range-of-motion stretching and active peroneal strengthening. Parents are taught how to perform gentle dorsiflexion-eversion stretches during diaper changes, and active kicking games that stimulate lateral foot muscles.

Red Flags and Immediate Specialist Escalation

Immediate clinical escalation to a Ponseti certified paediatric orthopaedic surgeon is mandatory if the parent notices loss of passive dorsiflexion (<10 degrees), early recurrence of the deep medial skin crease, heel riding up inside the brace shoe, or dynamic supination during walking (tibialis anterior overactivity). Re-casting with 2 to 3 Ponseti casts resolves early relapse if detected promptly, avoiding invasive surgical intervention.

Frequently Asked Questions