caa a22 4500 463180410 CHVBK 20180406164837.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s00381-006-0286-1 doi (NATIONALLICENCE)springer-10.1007/s00381-006-0286-1 Observations at the craniocervical junction with simultaneous caudal traction of the spinal cord [Elektronische Daten] [R. Tubbs, Marios Loukas, Mohammadali Shoja, W. Oakes] Introduction: Some have opined that caudal traction of the spinal cord may result in caudal descent of the hindbrain. Materials and methods: In fresh adult cadavers (n = 12; less than 6h postmortem) with no CIM, distal tension (75N) was applied to the conus medullaris with simultaneous observation of the cervical spinal cord, brainstem, and hindbrain and their relationship to the foramen magnum per occipital craniectomy and removal of the posterior arch of C1. Results: After lumbar laminectomy in cadavers, caudal tension on the cord (conus medullaris) demonstrated negligible movement (less than 1mm) of the caudal brain stem and cervical spinal cord. No movement of the cerebellar tonsils was identified. Moreover, after transection of the lumbar dural cul-de-sac and lumbar spinal dural nerve sleeves, distal traction produced only 2 to 3mm of caudal descent of the brain stem and cervical spinal cord. Again, no movement of the cerebellar tonsils was visualized. Conclusions: Our findings in a fresh cadaveric model suggest that it is unlikely that caudal fixation of the distal spinal cord results in inferior displacement of the cerebellar tonsils, and a resultant Chiari I malformation or that transection of the filum terminale may reverse tonsillar ectopia. In vivo animal studies are now necessary to verify our findings. Springer-Verlag, 2007 Caudal traction nationallicence Spinal cord nationallicence Cerebellar tonsils nationallicence Tubbs R. Department of Cell Biology, Division of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA aut Loukas Marios Department of Anatomical Sciences, St. George's University, St. George's, Grenada aut Shoja Mohammadali Tabriz Medical University, Tabriz, Iran aut Oakes W. Department of Cell Biology, Division of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA aut Child's Nervous System Springer-Verlag 23/4(2007-04-01), 367-369 0256-7040 23:4<367 2007 23 381 https://doi.org/10.1007/s00381-006-0286-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00381-006-0286-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tubbs R. Department of Cell Biology, Division of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA aut NATIONALLICENCE 700 1- Loukas Marios Department of Anatomical Sciences, St. George's University, St. George's, Grenada aut NATIONALLICENCE 700 1- Shoja Mohammadali Tabriz Medical University, Tabriz, Iran aut NATIONALLICENCE 700 1- Oakes W. Department of Cell Biology, Division of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA aut NATIONALLICENCE 773 0- Child's Nervous System Springer-Verlag 23/4(2007-04-01), 367-369 0256-7040 23:4<367 2007 23 381 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer