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Correlation Between Gadolinium-Enhanced MRI and Neurophysiology in Bell’s Palsy: A Preliminary Study

  • L. Jonsson
  • M. Engström
  • K.-Å. Thuomas
  • E. Stålberg
Conference paper

Abstract

Fifty percent of patients with clinically complete Bell’s palsy run the risk of suffering from sequelae, including persisting muscle weakness and dyskinesia (abnormal facial muscle movements). The pathophysiological event that causes facial dyskinesia and the location of the primary nerve injury in Bell’s palsy is unknown. It has been speculated that central (facial nucleus) hyperexcitability, ephaptic transmission along the facial nerve, or defect reinnervation (to false muscle) of the nerve fibers may be responsible for facial dyskinesias [2]. In the present study, gadolinium-enhanced MRI (GadMRI) and refined neurophysiological methods were used in an attempt to locate the primary nerve injury and get more information on the pathogenesis of facial dyskinesias in Bell’s palsy.

References

  1. 1.
    Engström M, Thuomas K-Å, Naeser P, Stalberg E, Jonsson L., (1993) Facial nerve enhancement in Bell’s palsy demonstrated by different gadolinium-enhanced MRI techniques Arch Otolaryngol Head Neck Surg 119: 221–225Google Scholar
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    Jankovic J., (1988) Cranial-cervical dyskinesias. An overview. In: Jankovic J, Tolosa E., (eds) Facial dyskinesias. Raven, New York, pp 1–13 (Advances in neurology, vol 49 )Google Scholar
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    Kamp Nielsen V., (1985) Electrophysiology of the facial nerve in hemifacial spasm: ectopic/ephaptic excitation. Muscle Nerve 8: 545–555PubMedCrossRefGoogle Scholar
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    Schwaber MK, Larson TC, Zealar DL, Creasy J., (1990) Gadolinium-enhanced MRI in Bell’s palsy. Laryngoscope 100: 1264–1269PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag 1994

Authors and Affiliations

  • L. Jonsson
    • 1
    • 2
  • M. Engström
    • 1
    • 2
  • K.-Å. Thuomas
    • 3
  • E. Stålberg
    • 4
  1. 1.Department of Oto-Rhino-LaryngologyUppsala UniversityUppsalaSweden
  2. 2.Department of Head & Neck SurgeryUppsala UniversityUppsalaSweden
  3. 3.Diagnostic RadiologySweden
  4. 4.Clinical NeurophysiologyUppsala UniversitySweden

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