“…Also, joint and periarticular anatomy must be clearly understood by the examiner to avoid neurovascular injury during needle insertion. The examination is performed using fluoroscopic monitoring to assure proper needle position and allow the examiner to constantly observe the injection of the iodinated contrast agent into the joint (Freiberger and Kaye, 1979;Dalinka, 1980;Berquist, 1992Berquist, , 1993.…”