Effect of postoperative early ankle motion exercise using hinged ankle-foot orthoses in clubfoot

The authors proposed early application of hinged ankle-foot orthoses for improving postoperative range of ankle motion after the complete subtalar release operation for clubfoot. Forty-eight patients (74 feet) with clubfoot were divided into two groups: group A patients (20 feet) were immobilized in plaster casts for 6 weeks after surgery, followed by non-hinged ankle-foot orthoses, and group B patients (54 feet) were immobilized in plaster casts for 4 weeks after surgery, followed by hinged ankle-foot orthoses. The range of ankle plantarflexion in group B showed a significant improvement compared with group A at 3 months and 1, 2, and 3 years after surgery. There was no statistical difference between the groups in the range of dorsiflexion except at 3 months of follow-up. The postoperative talo-calcaneal index was well maintained in both groups. Early range-of-motion exercises using the hinged ankle-foot orthoses achieved good ankle function, especially in plantarflexion, with no loss of radiologic correction.