TY - JOUR T1 - Occipitocervical malformation with atlas duplication JF - Journal of Neurology, Neurosurgery & Psychiatry JO - J Neurol Neurosurg Psychiatry SP - 1101 LP - 1102 DO - 10.1136/jnnp-2011-300200 VL - 82 IS - 10 AU - Fon-Yih Tsuang AU - Jo-Yu Chen AU - Yao-Hong Wang AU - Dar-Ming Lai Y1 - 2011/10/01 UR - http://jnnp.bmj.com/content/82/10/1101.abstract N2 - A 55-year-old man presented to our institution with tetraparesis after a ground-level fall. The presence of hyper-reflexia in four limbs led to suspicion of cervical myelopathy. Initial cervical spine plain x-ray films showed spinal canal stenosis at C1/C2, os odontoideum and two atlas-like vertebrae. Duplication of the atlas in humans … ER -