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- Title
Neuralgic Amyotrophy and Hourglass Nerve Constriction/Nerve Torsion: Two Sides of the Same Coin? A Clinical Review.
- Authors
Granata, Giuseppe; Tomasello, Fabiola; Sciarrone, Maria Ausilia; Stifano, Vito; Lauretti, Liverana; Luigetti, Marco
- Abstract
Neuralgic amyotrophy, also called Parsonage–Turner syndrome, in its classic presentation is a brachial plexopathy or a multifocal neuropathy, involving mainly motor nerves of the upper limb with a monophasic course. Recently, a new radiological entity was described, the hourglass constriction, which is characterized by a very focal constriction of a nerve, or part of it, usually associated with nerve thickening proximally and distally to the constriction. Another condition, which is similar from a radiological point of view to hourglass constriction, is nerve torsion. The pathophysiology of neuralgic amyotrophy, hourglass constriction and nerve torsion is still poorly understood, and a generic role of inflammation is proposed for all these conditions. It is now widely accepted that nerve imaging is necessary in identifying hourglass constrictions/nerve torsion pre-surgically in patients with an acute mononeuropathy/plexopathy. Ultrasound and MRI are useful tools for diagnosis, and they are consistent with intraoperative findings. The prognosis is generally favorable after surgery, with a high rate of good motor recovery.
- Subjects
BRACHIAL plexus neuropathies; TORSION; NERVES; RADIAL nerve
- Publication
Brain Sciences (2076-3425), 2024, Vol 14, Issue 1, p67
- ISSN
2076-3425
- Publication type
Article
- DOI
10.3390/brainsci14010067