dural sac

continuation of the dura mater inferior to the termination (caudal end) of the spinal cord (L2 vertebral level), surrounding the lumbar cistern, cauda equina, and filum terminale.

References in periodicals archive ?

Level of termination of the spinal cord and the dural sac: a magnetic resonance study.

Influence of Age, Sex, Height and Lumber Stenosis on the Position of the Conus Medullaris in Adults/Influencia de la Edad, Sexo, Altura y Estenosis Lumbar en la Posicion del Cono Medular en Adultos

(18) placed 1 mg morphine-impregnated microfibrillar collagen sponge over the intact dural sac during single level posterior lumbar laminectomy and instrumented fusion operation and found that postoperative morphine consumption is lower than the control group during 24 h.

The Effects of Locally Administered Morphine Over the Dura on Postoperative Morphine Consumption and Pain After Lumbar Disc Surgery: A Prospective, Randomised, Double-Blind and Placebo-Controlled Study

Although MED can directly remove intervertebral disc tissue protruding or prolapsing in the spinal canal, the surgical procedure is similar to that of open surgery by pulling the nerve root and dural sac. As a result, the risks of nerve root damage and adhesion during MED are the same as those during open surgery.11,12 As regards PTED, it is a minimally invasive method for treating LDH via the lateral approach.

A comparative study on short-term therapeutic effects of percutaneous transforaminal endoscopic discectomy and microendoscopic discectomy on lumbar disc herniation

MRI images revealed a consistent collection of acute intradural hematoma inside the dural sac approximately 8 cm long between the L1-L3 vertebral bodies, which caused a significant compression of the dural sac fibers (Figure 2.

A Rare and Unusual Complication of Kyphoplasty: A Case Report of Spinal Subdural Hemotoma/Kifoplasti Sonrasi Gelisen Nadir ve Beklenmeyen Bir Komplikasyon: Spinal Subdural Kanamaya Ait Bir Olgu Sunumu

There is also an abrupt wedge-shaped terminus of the cord, which lies opposite T12 and an abnormal course of the cauda equina with separation of the anterior and posterior nerve roots, forming the "double bundle shape." The dural sac is abnormally highly placed, ending at L5.

9-year-old girl with neurogenic bladder, chronic constipation

In Hirayama disease, chronic ischemic changes involving the anterior horns of the cord from C5-T1 level occur due to repeated cord flexion within a tight dural sac. (3) Disproportionate growth of the vertebral column in comparison with the spinal cord is also an etiological factor.

Bilateral Upper Limb Weakness

Imaging features were retrospectively analysed according to MR features of cervical cord appearance, attachment of dural sac and contrast enhancement pattern.

DYNAMIC CERVICAL MR IMAGING FINDINGS OF PATIENTS WITH HIRAYAMA DISEASE IN A TERTIARY CARE HOSPITAL OF NORTH-EAST INDIA

Magnetic resonance imaging (MRI) of the lumbar spine and sacrum revealed a solid expansive lesion on L2 topography, with an extensive epidural soft tissue component, infiltrating the bone marrow and determining compression of the dural sac. At that time, a core biopsy was performed, which revealed a lesion consistent with a grade 2 chordoma with positive immunostaining for pan-cytokeratin (AE1/AE3), S-100 protein, epithelial membrane antigen (EMA), and Ki-67 index of 20%.

Tumor Reduction with Pazopanib in a Patient with Recurrent Lumbar Chordoma

The lamina was thinned out using a burr to avoid further insult to the dural sac, and then using a Kerrison ronguer, laminectomy was completed all around the lesion under microscopic guidance (Figure 4).

Lumbar Intraspinal Osteolipoma Presenting as Cauda Equina Syndrome: A Case Report and Review of Literature

Before the wood was removed, the dural sac was mildly compressed above the level continuously, to prevent CSF from filling our surgical field.

Penetrating Sacral Injury with a Wooden Foreign Body

Once the dural sac was incised, the MEPs' amplitude suddenly dropped significantly because of the instant release of high-intradural pressure.

Posterior Mediastinal, Intraspinal, Intradural, Intramedullary Lipoma through a Kovalevsky Canal in the Thoracic Spine

Due to the special anatomical structure and functional characteristics of the upper lumbar spine, such as the narrow spinal space and the smaller range of motion, the dural sac and nerve structure in the spinal canal of the upper lumbar are more likely to be compressed, which is more likely to manifest as multiple neurological disorders rather than being limited to the involvement of a certain nerve [2].

A Modified Translaminar Osseous Channel-Assisted Percutaneous Endoscopic Lumbar Discectomy for Highly Migrated and Sequestrated Disc Herniations of the Upper Lumbar: Clinical Outcomes, Surgical Indications, and Technical Considerations