Neural Exam - 12 month Head Circumference

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This infant is 12 months old.
  • The first attempt to measure the head circumference is easy but the examiner reads the measurement as 50.6 cm, which is above the 98th percentile.
  • Second attempt is much more difficult because the infant doesn’t want the tape measure around his head.
  • The measurement however is read as 47.7 cm, which is at the 50th percentile.
  • A third attempt verifies that the 47.7 cm measurement is correct.
  • Always take at least two measurements and save the head circumference to the last.


Links: MP4 version

12 Months Neural Exam Movies: Shy | Social and Language | Cranial Nerves | Tone - Tone | Reflexes - deep tendon reflexes | plantar reflex‎ | Parachute | Pincer Grasp | Beads in the Cup | Play Ball | Transition in and out of Sitting | Creeping | Stoop and Recover | Motor/Gait - Stand, Walks with Support | Toddler’s Gait | Head Circumference | Neural Exam Movies
Movie Source - Paul D. Larsen  
Movies from the PediNeuroLogic Exam website are used by permission of Paul D. Larsen, M.D., University of Nebraska Medical Center and Suzanne S. Stensaas, Ph.D., University of Utah School of Medicine. Additional materials were drawn from resources provided by Alejandro Stern, Stern Foundation, Buenos Aires, Argentina; Kathleen Digre, M.D., University of Utah; and Daniel Jacobson, M.D., Marshfield Clinic, Wisconsin. The movies are licensed under a Creative Commons Attribution-NonCommerical-ShareAlike 2.5 License.
Links: Neural Exam Movies | Movies



Cite this page: Hill, M.A. 2017 Embryology Neural Exam - 12 month Head Circumference. Retrieved November 23, 2017, from https://embryology.med.unsw.edu.au/embryology/index.php/Neural_Exam_-_12_month_Head_Circumference

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© Dr Mark Hill 2017, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G