by polina osler, philippe phan, and brian grottkau
DESCRIPTION
Figs. 1-A through 1-F CT of the cervical spine showing the C1-C2 vertebral fracture-dislocation. Figs. 1-A through 1-F CT of the cervical spine showing the C1-C2 vertebral fracture-dislocation. Figs. 1-A and 1-B Neck CT prior to reduction. The severity of the rotatory deformity can be seen on the three-dimensional CT reconstructions. The overlapping axial CT reconstructions show the C1 and C2 vertebrae with the fracture of the left facet (arrow) prior to reduction (Figs. 1-C and 1-D) and after reduction (Figs. 1-E and 1-F) Polina Osler et al. JBJS Case Connect 2014;4:e67 ©2014 by The Journal of Bone and Joint Surgery, Inc.TRANSCRIPT
by Polina Osler, Philippe Phan, and Brian Grottkau
Aspirin Versus Heparin for Management of Cerebellar Stroke After
Vertebral Artery Dissection Following C1-C2 Fracture-Dislocation by
Polina Osler, Philippe Phan, and Brian Grottkau JBJS Case Connect
Volume 4(3):e67 August 13, 2014 2014 by The Journal of Bone and
Joint Surgery, Inc. Figs. 1-A through 1-F CT of the cervical spine
showing the C1-C2 vertebral fracture-dislocation.
Figs. 1-A through 1-F CT of the cervical spine showing the C1-C2
vertebral fracture-dislocation. Figs. 1-A and 1-B Neck CT prior to
reduction. The severity of the rotatory deformity can be seen on
the three-dimensional CT reconstructions. The overlapping axial CT
reconstructions show the C1 and C2 vertebrae with the fracture of
the left facet (arrow) prior to reduction (Figs. 1-C and 1-D) and
after reduction (Figs. 1-E and 1-F) Polina Osler et al. JBJS Case
Connect 2014;4:e67 2014 by The Journal of Bone and Joint Surgery,
Inc. Figs. 2-A through 2-F The CT angiogram and the MR angiogram of
the head and neck show occlusion of the left vertebral artery.
Figs. 2-A through 2-F The CT angiogram and the MR angiogram of the
head and neck show occlusion of the left vertebral artery. Normal
anatomy of the circle of Willis can be visualized on the MR
angiogram of the head with both the right and left vertebral
arteries visible (Fig. 2-A, arrow marked with asterisk indicates
the normal appearance of the left vertebral artery). The MR
angiogram of the head shows a normal right vertebral artery but the
left vertebral artery is not visualized; the arrows point to the
location where it would be expected to be seen (Figs. 2-B and 2-D).
Axial CT reconstruction of the C1-C2 complex after reduction (Fig.
2-C) shows the arch of the right vertebral artery (RVA) with the
contrast-filled lumen, but the left vertebral artery (LVA) is not
visualized; the arrow points to the location where it would be
expected to be seen. There is a filling defect in the left
vertebral artery from the point of the dural penetration to the
origin of the posterior inferior cerebellar artery. Finally,
sagittal CT reconstructions show the segment of the right vertebral
artery entering the skull (Fig. 2-E) and the presumed location of
the corresponding left segment (arrow), which is not visualized due
to occlusion (Fig. 2-F). Polina Osler et al. JBJS Case Connect
2014;4:e67 2014 by The Journal of Bone and Joint Surgery, Inc.
Figs. 3-A through 3-F MRI of the brain shows the acute cerebellar
infarct.
Figs. 3-A through 3-F MRI of the brain shows the acute cerebellar
infarct. Axial MR images taken at the level of the upper medulla
(top row) and the pontomedullary junction (bottom row) show
evidence of acute cerebellar infarction affecting both lateral
cerebellar hemispheres (large arrows) and the left medulla (small
arrows). Areas of acute ischemia appear bright on the diffusion
weighted imaging sequence (Figs. 3-A and 3-B) and dark on the
corresponding apparent diffusion coefficient sequence images (Figs.
3-C and 3-D). After six hours, damaged areas can be seen on the
T2-weighted fluid-attenuated inversion recovery images as areas of
increased signal intensity (Figs. 3-E and 3-F). Polina Osler et al.
JBJS Case Connect 2014;4:e67 2014 by The Journal of Bone and Joint
Surgery, Inc. At the twelve-month follow-up, CT and CT angiography
of the cervical spine showed near perfect alignment of C1 and C2 on
the axial reconstructions (left panel); the left vertebral artery
(LVA) lumen appears narrowed (arrow, right panel) compared with the
ap... At the twelve-month follow-up, CT and CT angiography of the
cervical spine showed near perfect alignment of C1 and C2 on the
axial reconstructions (left panel); the left vertebral artery (LVA)
lumen appears narrowed (arrow, right panel) compared with the
appearance of the right vertebral artery (RVA) (middle panel).
Polina Osler et al. JBJS Case Connect 2014;4:e67 2014 by The
Journal of Bone and Joint Surgery, Inc.