forward cutting, 6-1/2″ (16.5 cm) Frazier Cordotomy Knife is ideally suited for cordotomy/chordotomy procedures. A chordotomy is a surgical procedures that is performed in patients that has severe pain and involves accessing and manipulating the spinal cord. In some cordotomies a laminectomy is also performed for increased access to the cord. This knife is designed for forward cutting and makes effective cuts that reduce trauma to surrounding tissue areas while effectively disabling some pain-conducting tracts.