Intradural disk rupture has been reported [1-5] . In most cases disk herniation in the lumbar region occurs on one side or the other of the strong posterior longitudinal ligament; seldom is the central part of the ligament perforated . Very rarely , a disk fragment ruptures through the anterior aspect of the spinal dura to project intrathecally [1] . Continued negative pressure is not necessary...

In the original description of herniated intervertebral disk by Mixter and Barr [1), the term used was rupture of the inter-vertebral disk. However, with the passage of time, this term, although used frequently by surgeons, has become meaningless. A rupture of the disk is a common finding at autopsy when the disks are examined, but ruptures are not necessarily associated with herniation of the ...

Self-assembly dynamics in binary surfactant mixtures and structure changes of lipid vesicles induced by detergent solution are studied using coarse-grained molecular simulations. Disk-shaped micelles, the bicelles, are stabilized by detergents surrounding the rim of a bilayer disk of lipids. The self-assembled bicelles are considerably smaller than bicelles formed from vesicle rupture, and thei...

Fifteen nuclear magnetic resonance (NMR) studies of 14 patients with herniated lumbar intervertebral disks were performed on the UCSF NMR imager. Computed tomographic (CT) scans done on a GE CT/T 8800 or comparable scanner were available at the time of NMR scan interpretation. Of the 16 posterior disk ruptures seen at CT, 12 were recognized on NMR. Diminished nucleus pulposus signal intensity w...

The diagnosis of transverse spinal fractures in patients with ankylosing spondylitis and Forestier's disease (DISH) may be difficult. The MRI features of 9 such fractures at the disk, vertebral body, spinal canal and posterior elements are presented. Fractures of the posterior elements (posterior arch fractures and/or rupture of interspinous or supraspinous ligaments and contiguous soft tissue ...

The association between post-traumatic optic disc pallor and traumatic choroidal rupture is poorly understood. To further define this relationship, nine cases of indirect traumatic choroidal rupture and post-traumatic optic disc pallor were compared with cases of indirect choroidal rupture without disc pallor in terms of severity of ocular injury, fundus findings, and visual outcome. The type a...