tethered spinal cord (tsc) is a rare disorder; it occurs when the conus medularis is anchored to the base of the vertebral canal by thickened filum terminale cysts, lipoma and spinal dysraphia. this disorder may cause paraplegia, sensory and sphincter disturbance. we report a twenty-two months-old girl presenting with paraplegia. tsc diagnostic was confirmed by myelotomography. the patient was submitted to surgical relief of tethered filum terminale.