foramen

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foramen

a natural hole, esp one in a bone through which nerves and blood vessels pass
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

foramen

[fə′rā·mən]
(biology)
A small opening, orifice, pore, or perforation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
(23) By the mid 2000s, Schubert and Hoogland (27) described their technique for transforaminal endoscopic removal of a sequestered disc fragment using reamers to first expand the foraminal window by removing the ventral portion of the superior articular process.
An MRI of the lumbar spine showed a large disc herniation/sequestered disc fragment within the left lateral recess and left foraminal region at L1-L2, with significant narrowing of the left neural foramen and impingement on the exiting left L1 nerve root (Figure 2).
The most common anatomic regions where the cement leak is encountered are paravertebral space, epidural space, intervertebral disc, and foraminal zone.
The foraminal index (FI) of a bone is calculated by using the formula: FI=(DiNF/TL)x100; where FI=foraminal index, DiNF=distance from the proximal end of the bone to NF, and TL=total bone length (10).
No evidence of epidural abscess, spinal canal compromise, neural foraminal narrowing, or spinal cord compression was noted.
Evaluation in the ER, which included a hip X-ray and MRI of the lumbar spine (seen in Figure 1), revealed only mild lumbar facet arthropathy and moderate left neural foraminal stenosis at L3-L4 without any concomitant hip or spine fracture.
This new technology will determine more accurately the length of the canal, foraminal output, degree of curvature, major, and minor diameter of the canal, and the presence of isthmuses and accessory channels.
Estudio anatomico de la amplitud de los discos intervertebrales y de la zona foraminal a nivel toracolumbar en perros adultos.
For example, postoperative scarring inhibits epidural contrast spread, while foraminal stenosis blocks the extraforaminal extension of injected drugs [16, 17].
The other type is foraminal stenosis, which is a narrowing around a foramen (hole or opening) that a nerve passes through as it exits the spinal cord.
Patients who have a disc herniation or foraminal stenosis causing symptoms in one leg, best benefit from this type of procedure.