EARLY RESULTS OF THE PONSETI METHOD FORTREATMENT OF ARTHROGRYPOTIC CLUBFOOT

Abstract

Introduction: Clubfoot occurs in approximately 1 in 1,000 live births and is one of the most common congenital birth defects. Although there are multiple reports of successful treatment of idiopathic clubfeet with the Ponseti method, the use of this treatment in nonidiopathic clubfeet has not been reported. This purpose of this study was to evaluate early results of the Ponseti method for the treatment of clubfeet associated with distal arthrogryposis.

Methods: Twelve consecutive infants with clubfoot (twenty-four clubfeet) associated with distal arthrogryposis were treated with the Ponseti method and retrospectively reviewed. Four patients had casting treatment prior to referral. The severity of the foot deformity was classified according to the grading system of Dimeglio. The number of casts required to achieve correction was compared to published data for idiopathic clubfeet. Any recurrent clubfoot deformities or complications during treatment were recorded. All patients were followed for a minimum of two years.

Results: The clubfeet of all twelve patients (twentyfour clubfeet) were graded as Dimeglio grade IV. Initial correction was achieved in all patients with a mean of 6.75 ± 0.86 casts (range, two to ten casts), which was significantly more compared to the number needed in a published cohort of idiopathic clubfeet treated with the Ponseti method (p< 0.003). Three patients (six clubfeet) had a relapse after initial successful treatment. All relapses were related to non-compliance with brace wear. No relapses occurred in the cohort of patients who were initially treated with the new dynamic foot abduction orthosis (eight patients). Two of the three patients with clubfoot relapse were successfully treated with repeat castings and/or tenotomy; the remaining patient (two clubfeet) was treated with extensive soft-tissue release surgery.

Conclusion: Our data supports the use of the Ponseti method in patients with distal arthrogryposis based on success rates approaching that for idiopathic clubfoot.

Maintaining correction is perhaps the most difficult aspect of management. Parental teaching and early attention to brace complications are helpful techniques to improve parental compliance.