【正确答案】
B
【答案解析】Because a neonate grows so quickly, the cast may need to be changed as often as every 1 to 2 weeks. A cast for congenital clubfoot isn't left on for 6 weeks because of the rapid rate of the infant's growth. By the time a baby is crawling or ready to walk, the final cast has long since been removed. After the cast is permanently removed, the baby may wear a Denis Browne splint until he is 1 year old.