Papadopoulos EC, Khan SN. Piriformis syndrome and low back pain: a new clas- sifi ca on and review of the literature. Orthop Clin North Am. 2004;35:65-71.
Williams PL, Warwick R. Gray’s Ana- tomy. 36th ed. Philadelphia, Pa: WB Sa- unders Co; 1980.
Raj P.P. Radiographic Imagıng for Regio- nal Anesthesia and Pain Management. st ed. Philadelphia, Pa: Churchill Living- stone; 2003.
Boyajian LA et al, Diagnosis and Manage- ment of Piriformis Syndrome: An Osteo- pathic Approach. JAOA . 2008;108:657