With our treatment these structures are stretched with weekly, gentle manipulations. A plaster cast is applied after each weekly session to retain the degree of correction obtained and to soften the ligaments. Thereby, the displaced bones are gradually brought into the correct alignment.
Five to seven plaster casts extending from the toes to the upper thigh with the knees at right angle should be sufficient to correct the clubfoot deformity. Even the very stiff feet require no more than 8 or 9 plaster casts to obtain maximum correction. Before applying the last plaster cast which is to be worn for three weeks, the Achilles tendon is often cut in an office procedure to complete the correction of the foot. By the time the cast is removed the tendon has regenerated to a proper length.
To prevent relapses, when the last plaster cast is removed a splint must be worn full-time for two to three months and thereafter at night for 3-4 years. The splint consists of a bar (the length of which is the distance between the baby's shoulders) with high top open-toed shoes attached at the ends of the bar in about 70 degrees of external rotation. A strip of plastizote must be glued inside the counter of the shoe above the baby's heel to prevent the shoes from slipping off. The baby may feel uncomfortable at first when trying to alternatively kick the legs. However, the baby soon learns to kick both legs simultaneously and feels comfortable. In children with only one clubfoot, the shoe for the normal foot is fixed on the bar in 40 degrees of external rotation. During the daytime the children wear regular shoes.