PROCEDURE: , Left L3-L4 transforaminal epidural steroid injection (L3 nerve root) and Left L4-L5 transforaminal epidural steroid injection (L4 nerve root) under fluoroscopic guidance.
PROCEDURE : , Left L3 - L4 transforaminal epidural steroid injection ( L3 nerve root ) and Left L4 - L5 transforaminal epidural steroid injection ( L4 nerve root ) under fluoroscopic guidance .