especially during pregnancy, where muscles around the pelvis, including piriformis muscles, tense up to stabilize the area for birth. In 2011, out of 263 patients between the ages of 45 to 84 treated for piriformis syndrome, 53.3% were female. Females are two times more likely to develop piriformis syndrome than males. Moreover, females had longer stay in hospital during 2011 due to high prevalence of the pain in females. The average cost of treatment was $29,070 for hospitalizing average 4 days. References Further reading External links Musculoskeletal disorders Peripheral nervous system disorders Wikipedia medicine articles ready to translate Syndromes