It has been reported that 85% to 92% of the patients experience 50% or more reduction in headache frequency and severity. In 50% to 60% of patients, the headaches are eliminated. Individual results may vary depending on each case. Long-term results of the surgery, studied over a period of 5 years, have been validated in the Journal of Reconstructive Surgery which have similar outcomes Additional studies are being performed for further long term outcomes in Dallas , Cleveland and other locations in the united states.