Recently the results of children and adolescents (ages nine to 18) who had this type of operation were reported. It seems that the immediate results of the surgery were very positive for most of the cases. Seventy-five percent were without pain and able to enjoy all activities. However, 12 years later, less than half (40 percent) remained symptom-free, and about half had to avoid some activities. The researchers recommend continued follow-up after back surgery for this age group.