Neurologic deficits following spinal anesthesia are extremely rare since the use of sterile spinal anesthesia kit and the relative small doses of the local anesthetics employed. We have experienced 29 years old healthy female patient developed left S root radiculopathy with dysesthesia and motor weakness of left foot after spinal anesthesia for appendectomy. And the patient recovered spontaneously after 6 months without specific treatment except physical and symptomatic therapy.