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Customized EMG needle insertion guide for the muscle afferent block of jaw-deviation and jaw-opening dystonias

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Dec 1999Publisher:Elsevier BVJournal:Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, volume 88, pages 664-669 (issn: 1079-2104,

Authors: Tadahiko Iizuka; Akira Takagi; Ryuji Kaji; Kazuya Yoshida;

doi: 10.1016/s1079-2104(99)70006-5

pmid: 10625846

Customized EMG needle insertion guide for the muscle afferent block of jaw-deviation and jaw-opening dystonias

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Abstract

Jaw-opening and jaw-deviation dystonias are characterized by mouth opening or lateral shift of the mandible due to involuntary contraction of the lateral pterygoid muscle, causing difficulties in speech or mastication. We introduce the method of muscle afferent block by using a removable device for inserting a hollow electromyographic needle.A technique for fabricating a customized needle insertion guide into the lateral pterygoid muscle is described. Using the device, intramuscular injection of lidocaine and ethanol was performed in 3 patients with jaw-opening dystonia and 2 with jaw-deviation dystonia. Subjective improvement was assessed on a linear self-rating scale ranging from 0 (no improvement) to 100 points (complete cure).The overall subjective improvement was 72% +/- 16.4% without major side effects.The device is very useful for safe and accurate injection into the lateral pterygoid muscle. The muscle afferent block is effective for jaw-opening and jaw-deviation dystonias.

Related Organizations

Japan Society for the Promotion of Science
United Kingdom
Japan Society for the Promotion of Science
United Kingdom
Kyoto University
Japan

Keywords

Adult, Male, Injections, Intramuscular, Humans, Anesthetics, Local, Electrodes, Aged, Afferent Pathways, Ethanol, Electromyography, Lidocaine, Nerve Block, Equipment Design, Middle Aged, Dystonic Disorders, Needles, Chronic Disease, Female, Jaw Diseases

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	17
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average