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Sonographic and electrodiagnostic features of hereditary neuropathy with liability to pressure palsies.

Byline: Federica Ginanneschi, Georgios Filippou, Fabio Giannini, Maria A. Carluccio, Antonella Adinolfi, Bruno Frediani, Maria T. Dotti, Alessandro Rossi Keywords: HMSN; neurophysiology; ultrasound Abstract In hereditary neuropathy with liability to pressure palsies (HNPP), the increase in distal mo... Full description

Journal Title: Journal of the peripheral nervous system : JPNS December 2012, Vol.17(4), pp.391-398
Main Author: Ginanneschi, Federica
Other Authors: Filippou, Georgios , Giannini, Fabio , Carluccio, Maria A , Adinolfi, Antonella , Frediani, Bruno , Dotti, Maria T , Rossi, Alessandro
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1529-8027 ; DOI: 1529-8027 ; DOI: 10.1111/j.1529-8027.2012.00437.x
Link: http://search.proquest.com/docview/1273126594/?pq-origsite=primo
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title: Sonographic and electrodiagnostic features of hereditary neuropathy with liability to pressure palsies.
format: Article
creator:
  • Ginanneschi, Federica
  • Filippou, Georgios
  • Giannini, Fabio
  • Carluccio, Maria A
  • Adinolfi, Antonella
  • Frediani, Bruno
  • Dotti, Maria T
  • Rossi, Alessandro
subjects:
  • Action Potentials–Physiology
  • Adolescent–Diagnosis
  • Adult–Diagnostic Imaging
  • Anatomy, Cross-Sectional–Methods
  • Arthrogryposis–Diagnosis
  • Electric Stimulation–Diagnostic Imaging
  • Electrodiagnosis–Physiology
  • Electrophysiological Phenomena–Diagnostic Imaging
  • Female–Pathology
  • Hereditary Sensory and Motor Neuropathy–Pathology
  • Humans–Pathology
  • Image Processing, Computer-Assisted–Pathology
  • Male–Pathology
  • Middle Aged–Pathology
  • Neural Conduction–Pathology
  • Peripheral Nerves–Pathology
  • Predictive Value of Tests–Pathology
  • Ultrasonography–Pathology
  • Young Adult–Pathology
ispartof: Journal of the peripheral nervous system : JPNS, December 2012, Vol.17(4), pp.391-398
description: Byline: Federica Ginanneschi, Georgios Filippou, Fabio Giannini, Maria A. Carluccio, Antonella Adinolfi, Bruno Frediani, Maria T. Dotti, Alessandro Rossi Keywords: HMSN; neurophysiology; ultrasound Abstract In hereditary neuropathy with liability to pressure palsies (HNPP), the increase in distal motor latencies (DMLs) is often out of proportion to the slowing of conduction velocities, but the pathophysiological mechanism is still unclear. We used a combined electrophysiological and ultrasonographic (US) approach to provide insight into this issue. Twelve HNPP subjects underwent extensive electrophysiological studies and US measurements of the cross-sectional area (CSA) of several peripheral nerves. US nerve enlargement was only observed in the carpal tunnel, Guyon's canal, the elbow and the fibular head. We did not observe US abnormalities at sites where nerve entrapment is uncommon. An increase in DMLs was observed regardless of US nerve enlargement. The increased nerve CSA only in common sites of entrapment likely reflected the well-documented nerve vulnerability to mechanical stress in HNPP. No morphometric changes were seen in the distal nerve segments where compression/entrapment is unlikely, despite the fact that the DMLs were increased. These data suggest that factors other than mechanical stress are responsible for the distal slowing of action potential propagation. We speculate that a mixture of mechanical insults and an axon-initiated process in the distal nerves underlies the distal slowing and/or conduction failure in HNPP. Author Affiliation: Department of Neurological, Neurosurgical and Behavioural Sciences
language: eng
source:
identifier: E-ISSN: 1529-8027 ; DOI: 1529-8027 ; DOI: 10.1111/j.1529-8027.2012.00437.x
fulltext: fulltext
issn:
  • 15298027
  • 1529-8027
url: Link


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titleSonographic and electrodiagnostic features of hereditary neuropathy with liability to pressure palsies.
creatorGinanneschi, Federica ; Filippou, Georgios ; Giannini, Fabio ; Carluccio, Maria A ; Adinolfi, Antonella ; Frediani, Bruno ; Dotti, Maria T ; Rossi, Alessandro
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subjectAction Potentials–Physiology ; Adolescent–Diagnosis ; Adult–Diagnostic Imaging ; Anatomy, Cross-Sectional–Methods ; Arthrogryposis–Diagnosis ; Electric Stimulation–Diagnostic Imaging ; Electrodiagnosis–Physiology ; Electrophysiological Phenomena–Diagnostic Imaging ; Female–Pathology ; Hereditary Sensory and Motor Neuropathy–Pathology ; Humans–Pathology ; Image Processing, Computer-Assisted–Pathology ; Male–Pathology ; Middle Aged–Pathology ; Neural Conduction–Pathology ; Peripheral Nerves–Pathology ; Predictive Value of Tests–Pathology ; Ultrasonography–Pathology ; Young Adult–Pathology
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descriptionByline: Federica Ginanneschi, Georgios Filippou, Fabio Giannini, Maria A. Carluccio, Antonella Adinolfi, Bruno Frediani, Maria T. Dotti, Alessandro Rossi Keywords: HMSN; neurophysiology; ultrasound Abstract In hereditary neuropathy with liability to pressure palsies (HNPP), the increase in distal motor latencies (DMLs) is often out of proportion to the slowing of conduction velocities, but the pathophysiological mechanism is still unclear. We used a combined electrophysiological and ultrasonographic (US) approach to provide insight into this issue. Twelve HNPP subjects underwent extensive electrophysiological studies and US measurements of the cross-sectional area (CSA) of several peripheral nerves. US nerve enlargement was only observed in the carpal tunnel, Guyon's canal, the elbow and the fibular head. We did not observe US abnormalities at sites where nerve entrapment is uncommon. An increase in DMLs was observed regardless of US nerve enlargement. The increased nerve CSA only in common sites of entrapment likely reflected the well-documented nerve vulnerability to mechanical stress in HNPP. No morphometric changes were seen in the distal nerve segments where compression/entrapment is unlikely, despite the fact that the DMLs were increased. These data suggest that factors other than mechanical stress are responsible for the distal slowing of action potential propagation. We speculate that a mixture of mechanical insults and an axon-initiated process in the distal nerves underlies the distal slowing and/or conduction failure in HNPP. Author Affiliation: Department of Neurological, Neurosurgical and Behavioural Sciences
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titleSonographic and electrodiagnostic features of hereditary neuropathy with liability to pressure palsies.
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titleSonographic and electrodiagnostic features of hereditary neuropathy with liability to pressure palsies.
authorGinanneschi, Federica ; Filippou, Georgios ; Giannini, Fabio ; Carluccio, Maria A ; Adinolfi, Antonella ; Frediani, Bruno ; Dotti, Maria T ; Rossi, Alessandro
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