Magnetic resonance imaging (MRI) of her abdomen and thorax 1 year earlier for evaluation of her cardiac pathology revealed extensive ectasia of the dural sac
at the sacral level (Fig.
Contrast agent uptake was observed, especially at the dural sac
, with edema in the nerve roots.
The aim of this study was to determine the volumes of both CSF and nerve roots within the human lumbar dural sac
and estimate the degree of vulnerability at different vertebral levels.
Several studies have shown that although there is minimal increase in the dural sac
diameter with age, it is not statistically significant, while other studies have shown that the mid-sagittal growth of the lumbar spine does not change significantly after 4 years of age.
Mut(3) suggested classifying IDDH into, Type A: Herniation of a disc into the dural sac
The spinal cord ends at the level of the L1-L2 disk space, with the nerve roots extending caudally in an enclosed sac known as the dural sac
Intradural lesions occur within the dural sac
and are further classified as either intradural intramedullary or intradural extramedullary lesions.
Moreover, excessive retraction of the dural sac
imposes a potential neurological hazard.
Following approval from the Ethics Committee of Clinical Research (CEIC del Grupo Hospital de Madrid, Spain), the dural sac
and its contents at thoraco-lumbar levels were extracted from six human cadavers between 61 and 72 years of age.
endings range from the lower third of L5 to the lower third of S3.
Dural grafts are used for the repair of some congenital malformations, following dural resection, or in cases requiring enlargement of the dural sac
DETERMINATION AND COMPARISON OF THE TERMINATION OF THE DURAL SAC
TIP IN A SOUTH AFRICAN POPULATION: CLINICAL SIGNIFICANCE IN CRANIOSPINAL IRRADIATION