The spinal cord cone is generally located in the adult lumbar one vertebral stage, when the spinal cord cone injury due to the innervation of the lower limbs of the nerves in this part of the above has been issued, so the two lower limbs are mostly no obvious symptoms; due to the human body is the location of the center of defecation, so after the injury appeared incontinence or two fecal retention, the sexual function of the obvious dysfunction, such as impotence of the male, erection disorders, can not ejaculate. Physical examination reveals the disappearance of anal reflex and testicular reflex, as well as saddle-like sensory loss in the anus and perineum.