root avulsion

root a·vul·sion

the tearing away of the anterior and posterior primary nerve roots from the spinal cord, as a result of severe traction; most often, the C5 through T1 roots are affected.

root a·vul·sion

(rūt ă-vŭlshŭn)
Tearing away of anterior and posterior primary nerve roots from spinal cord, as a result of severe traction; most often, the C5 through T1 roots are affected.
References in periodicals archive ?
Background: Root avulsion to all 5 roots of the brachial plexus is a common presentation and keeps a major reconstructive challenge.
Although Carlstedl et al19 have tried repairing roots into the ventral spinal cord and Bertelli and Ghizoni20 have reported the direct replantation of the nerve graft into the spinal cord with some promising results, the surgical treatment of choice for brachial plexus root avulsion is nerve transfer.
1) CT myelogram is also useful in diagnosing CSF leak and nerve root avulsion.
These tender areas are believed to be areas of nerve root avulsion or constriction, for some other reason than the bony neuroforaminal stenosis, as is seen in most other patients.
The child has nerve root avulsion at C7 with damage to adjacent nerve trunks at C5-C6.
On MRI, spinal cord was normal but there was nerve root avulsion injury with pseudomeningocele on right at C6/C7 level and edema of brachial plexus on left side.
8) This manner of forceful separation typically results in pre-ganglionic root avulsion or post-ganglionic rupture of the upper roots (C5-C6) while sparing the lower roots (C7, C8, T1).
Traction forces on nerves can cause various injuries, ranging from temporary conduction deficits to nerve root avulsion from the spinal cord.
11) The MRI finding of a pseudomeningocele has a low sensitivity (approximately 50%), but a high specificity (approaching 100%) in the diagnosis of nerve root avulsion.
The cause of the recurrent SAH is determined on imaging in only 50% of cases (3) and includes dural pathology, postsurgical CSF cavity with neovascularity, bleeding central nervous system (CNS) tumours (ependymoma, oligodendroglioma and astrocytoma), vascular malformations (arteriovenous malformations and cavernous malformation near the brain's surface), aneurysms, and in the spinal cord--tumours, arteriovenous malformations and traumatic nerve root avulsion.
Brachial plexus root avulsion could be clinically intervented using the contralateral healthy C7 nerve-root as autologous graft.
Nerve root avulsion may result with dural tear forming traumatic pseudo-meningocoele seen as a focal CSF collection extending from the neural foramen (Figure 10).