, tentorium, occiput, and McRae's line) and were continued laterally along the bony and tentorial boundaries to the lateral-most limit. Others have used similar methods. 4 Statistical Analysis The Mann-Whitney U-test was used to examine statistical differences in the linear and volumetric measurements and age at surgery between the spacious and crowded subtypes. The presence or absence of syringomyelia among subtype classification was compared using Fisher's exact test. Results The most common presenting symptom was headaches (84%), followed by paresthesias (28%) and sleep
Davis G. Taylor, Panagiotis Mastorakos, John A. Jane Jr. and Edward H. Oldfield
I. Jonathan Pomeraniec, Alexander Ksendzovsky, Ahmed J. Awad, Francis Fezeu and John A. Jane Jr.
at diagnosis by a neuroradiologist and the neurosurgeon evaluating the patient. We recorded imaging characteristics consistent with CM-I, including amount of cerebellar tonsillar ectopia, CSF flow dynamics at the foramen magnum, as well as the presence of spinal cord syringomyelia. We defined a syrinx as a contiguous fluid collection (hypointense on T1-weighted images with corresponding T2 hyperintensity) of at least 2 mm in maximum anteroposterior diameter on sagittal or axial imaging, suggesting fluid within the spinal cord. If a syrinx was present, we noted its
Aaron E. Bond, John A. Jane Sr., Kenneth C. Liu and Edward H. Oldfield
institutional review board approval, patients with symptomatic Chiari I malformations, with or without syringomyelia, consented to be included in the study. All patients underwent preoperative assessment, which included history, physical examination, conventional baseline MRI studies of the brain and spinal cord, and cine MRI at the craniovertebral junction in the supine position. The results were used as a basis for recommending surgery, and for comparison with iMRI studies obtained during the operation. On the day of surgery, the patient was brought to the iMRI suite and
R. Webster Crowley, Rebecca M. Burke, M. Beatriz S. Lopes, D. Kojo Hamilton and John A. Jane Sr.
the successful treatment option for a high-grade spinal cord glioma, describing a complete removal of the spinal cord, and its associated nerve roots, beginning approximately 2 levels above the level of the tumor. We feel that there are several aspects of this particular case that warrant further discussion; however, what is perhaps most remarkable is the infrequency with which this procedure is used. While cordectomy has been advocated for a number of neurosurgical conditions, including intractable pain, spasticity, and syringomyelia, 5 , 10 , 13 , 23 , 24 there
2010 AANS Annual Meeting Philadelphia, Pennsylvania May 1–5, 2010
-0693 American Association of Neurological Surgeons JNS.2010.113.2.1 Paper 741 Surgical Treatment of Post-Traumatic Syringomyelia Nozar Aghakhani , MD, PhD , Bertrand Baussart , MD , David Philippe , MD , and Fabrice Parker , MD, PhD (Paris, France) 8 2010 113 2 A428 A428 This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose. 2010 Introduction: The aim of this study was to evaluate the effectiveness of two surgical