anterior column


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column

 [kol´um]
an anatomical part or other structure that resembles a pillar.
anal c's vertical folds of mucous membrane at the upper half of the anal canal; called also rectal columns.
anterior column the anterior portion of the gray substance of the spinal cord, in transverse section seen as a horn.
gray column the longitudinally oriented parts of the spinal cord in which the nerve cell bodies are found, comprising the gray matter of the spinal cord.
lateral column the lateral portion of the gray substance of the spinal cord, in transverse section seen as a horn; present only in the thoracic and upper lumbar regions.
posterior column the posterior portion of the gray substance of the spinal cord, in transverse section seen as a horn.
rectal c's anal columns.
spinal column (vertebral column) spine (def. 2).

an·te·ri·or col·umn

[TA]
the pronounced, ventrally oriented ridge of gray matter in each half of the spinal cord; it corresponds to the anterior or ventral horn appearing in transverse sections of the cord and contains the motor neurons innervating the skeletal musculature of the trunk, neck, and extremities.
See also: gray columns.
Synonym(s): columna anterior [TA]

an·te·ri·or col·umn

(an-tēr'ē-ŏr kol'ŭm) [TA]
The pronounced, ventrally oriented ridge of gray matter in each half of the spinal cord; it corresponds to the anterior or ventral horn appearing in transverse sections of the cord and contains the motor neurons innervating the skeletal musculature of the trunk, neck, and extremities.
See also: gray columns

column

(kol'um) [L. columna, pillar]
A cylindrical supporting structure.

anal column

Vertical folds of the mucous membrane in the anal canal. Synonym: rectal column

anterior column

Ventral column.

column of Bertin

See: Bertin, Exupère

column of Burdach

See: Burdach, Karl

Clarke's column

See: Clarke, Jacob A.L.

dorsal column

The triangular (in cross-section) sector of white matter demarcated by the dorsal midline (the dorsal median sulcus) and the dorsal horn on each side of the spinal cord. The dorsal column is a large bundle of ipsilateral primary sensory axons.
Synonym: dorsal funiculus; posterior column 2

column of fornix

Either of two arched bands of fibers that form the anterior body of the fornix. The fibers lead to the mammillary body.

column of Goll

See: Goll, Friedrich

gray column

Gray matter in the anterior and posterior horns of the spinal cord.

intermediolateral cell column

Lateral horn.

lateral column

1. A column in the lateral portion of the gray matter of the spinal cord. It contains cell bodies of preganglionic neurons of the sympathetic nervous system.
2. The triangular (in cross-section) sector of white matter demarcated by the dorsal and ventral horns on each side of the spinal cord. The lateral column contains axons of neurons with cell bodies inside the brain or spinal cord, not axons from the dorsal root ganglia. Synonym: lateral funiculus
3. The articulation in the midfoot between the fourth and fifth metatarsal bones and the cuboid.

motorcolumn

In the brainstem and spinal cord, a group of functionally analogous motor nuclei that are aligned longitudinally and that occupy a stereotyped position in cross-sections. The three motor columns, which run in the medial and ventral quadrants of the brainstem and spinal cord, comprise the branchial motor column (the nucleus ambiguus, the facial motor nucleus, and the trigeminal motor nucleus), the somatic motor column (the ventral horns of the spinal cord and the hypoglossal, abducens, trochlear, and oculomotor nuclei), and the visceral motor column (the lateral horns of the spinal cord and the dorsal motor nucleus of the vagus, the salivatory nucleus, and the Edinger-Westphal nucleus).

posterior column

1. The posterior horn of the gray matter of the spinal cord. It consists of an expanded portion or caput connected by a narrower cervix to the main portion of the gray matter.
2. Dorsal column.

rectal column

Anal column.

renal column

Cortical material of the kidney that extends centrally, separating the pyramids.

sensorycolumn

In the brainstem and spinal cord, a group of functionally analogous secondary sensory nuclei that are aligned longitudinally and that occupy a stereotyped position in cross-sections. The three sensory columns, which run in the lateral and dorsal quadrants of the brainstem and spinal cord, comprise the general somatic sensory column (the dorsal horns of the spinal cord and the mesencephalic, principal sensory, and spinal trigeminal nuclei), the special somatic sensory column (the cochlear and vestibular nuclei), and the visceral sensory column (the nucleus of the solitary tract).

spinal column

Vertebral column.

ventral column

The triangular (in cross-section) sector of white matter demarcated by the ventral horn and the ventral midline (the ventral median fissure) on each side of the spinal cord. The ventral column contains axons of neurons with cell bodies inside the brain or spinal cord, not axons from the dorsal root ganglia.
Synonym: anterior column; ventral funiculus
Enlarge picture
VERTEBRAL COLUMN

vertebral column

The portion of the axial skeleton consisting of vertebrae (7 cervical, 12 thoracic, 5 lumbar, the sacrum, and the coccyx) joined together by intervertebral disks and fibrous tissue. It forms the main supporting axis of the body, encloses and protects the spinal cord, and attaches the appendicular skeleton and muscles for moving the various body parts.
Synonym: spinal column See: illustration
References in periodicals archive ?
After all the treatment options were explained, 20 (of the 75) patients with severe canal compromise anterior column disruption and posterior ligamentous complex (PLC) disruption were selected to undergo surgery using a posterior-only approach consisting of a transpedicular corpectomy with anterior column reconstruction via expandable-cage placement and posterior instrumentation and fusion.
The PSO with a cage method includes inserting a cage with bone autograft into the osteotomy space in the anterior column of the osteotomized vertebra.
A relative reduction may occur with either: 1) large tongue volume relative to the volume of the bony limits of the anterior column or 2) prominent top incisors requiring more mandibular protrusion during direct laryngoscopy.
Because the anterior columns remain intact, this fracture is considered mechanically stable.
Underlying bone quality is different, and activities have changed in the elderly, resulting in the generation of a different set of fracture patterns with a predominance of anterior column damage combined with often incomplete posterior fractures [26].
"By utilizing an oblique lateral approach to the spine, this procedure enables placement of a large interbody graft into the disc space for anterior column support and segmental sagittal alignment while minimizing the nerve, muscle, and bone obstacles associated with traditional direct lateral approaches."
(5) This alteration has significant adverse sequelae in that it places additional stress on the posterior paraspinal muscles and ligaments, predisposes to a loss of balance, and places additional stress on the anterior column such that adjacent and other vertebrae are at risk for compression.
For the long-term health of soil tissues and facets, the elasticity of the anterior column unit should be restored to normal physiologic ranges.
described the case of a 15-year-old hockey player who sustained a non-displaced bilateral anterior column and wall acetabular fracture after low-energy trauma that was managed conservatively.
[6] reported in 2001 that the anterior column of the thoracic spine could easily be assessed and reconstructed using a minithoracotomy and a table-mounted retractor.
The potential complications caused by SPO include paraplegia from spinal kinking, cauda equina compression, and abdominal vessel injury from stretching of the anterior column. Some surgeons have modified SPO into a more posterior column resection and anterior osteoclasis and have achieved over 30[degrees] of correction at one level.[sup][8] It should be noted that SPO is susceptible to sagittal translation of the spinal column, which can cause cord compromise.

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