,LUMBAR SPINE/SACRO-ILIAC JOINTS:,  With the patient supine on the procedure table, the primary physician addressed the patient's lower extremities which were elevated alternatively in a straight leg raising manner to approximately 90 degrees from the horizontal. 
,LUMBAR SPINE / SACRO - ILIAC JOINTS : , With the patient supine on the procedure table , the primary physician addressed the patient 's lower extremities which were elevated alternatively in a straight leg raising manner to approximately 90 degrees from the horizontal .