,BRIEF NARRATIVE OF OPERATIVE PROCEDURE:,  After satisfactory general endotracheal tube anesthesia was administered, the patient was positioned on the operating table in the prone position with the head held on a soft foam padding. 
,BRIEF NARRATIVE OF OPERATIVE PROCEDURE : , After satisfactory general endotracheal tube anesthesia was administered , the patient was positioned on the operating table in the prone position with the head held on a soft foam padding .