Hemimasticatory Spasm: A Case Report with a New Management Strategy

Sinha, Ramen; Chattopadhyay, P. K.; Roychowdhury, Sujoy; Bennur, Sunil

doi:10.1007/s12663-010-0162-0

Cited by 8 publications

(2 citation statements)

References 7 publications

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“…7 Debulking of the masseter muscles has also yielded good improvement. 17 The exact pathophysiology of HMS is still not clear. HMS is usually precipitated by talking, laughing, etc.…”

Section: Jmdmentioning

confidence: 99%

Long-Term Outcome of Hemimasticatory Spasm

Ray

Kamble

Yadav

et al. 2022

JMD

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ObjectiveaaThis study aims to identify the demographic, clinical, and therapeutic characteristics of four patients with hemimasticatory spasm (HMS) seen in our outpatient department over a period of 20 years.MethodsaaWe performed a retrospective chart review of four patients with HMS who visited outpatient services in the Department of Neurology from 2001 to 2020.ResultsaaThe follow-up for all patients ranged from 2 years to 9 years. Three patients had facial or bucco-oral morphea. Two patients maintained long-term improvements in symptoms after being treated with botulinum toxin for 4-7 years, while one patient reported improvement in symptoms with treatment of carbamazepine that subsequently remitted after pregnancy.ConclusionaaThis report highlights the long-term outcome of HMS in our patients. Our patients reported a significant reduction or complete resolution of symptoms after treatment, and eventually, two patients were asymptomatic while off treatment.

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“…7 Debulking of the masseter muscles has also yielded good improvement. 17 The exact pathophysiology of HMS is still not clear. HMS is usually precipitated by talking, laughing, etc.…”

Section: Jmdmentioning

confidence: 99%

Long-Term Outcome of Hemimasticatory Spasm

Ray

Kamble

Yadav

et al. 2022

JMD

View full text Add to dashboard Cite

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“…Numerous investigations have categorically refuted the idea that HMS is brought on by problems with the muscles or the central nervous system. [ 5 - 10 ] It is also proposed that it would be worthwhile to look into whether stopping the masseteric nerve’s excessive discharge could help to avoid HMS. While the afflicted side is in spasm, the activated trigeminal nerve does not influence the muscle’s inhibitory reflex.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Efficacy of TMJ Arthroscopy-Assisted Masseter Nerve Avulsion on Hemimasticatory Spasm: An Original Research

Pillai¹,

Kumar²,

Kumar³

et al. 2023

Journal of Pharmacy and Bioallied Sciences

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The goal of this study is to find a cure for the masticatory muscle disease known as hemimasticatory spasm (HMS). This retrospective investigation intends to find a more efficient therapeutic approach for HMS patients by examining the clinical effectiveness of masseteric nerve avulsion performed on HMS using a temporomandibular arthroscope. A clinical study was piloted where the subjects were treated for masseter nerve avulsion by TMJ arthroscopy. The follow-up was done till 2 years, and the subjects were evaluated for the various characteristics like difficulties, masticatory abilities, and various sounds at the joint for the various functions of the joint. The diagnosis was done using the electrophysiological electromyogram (EMG) at the designated time intervals. There was a complete remission in all the subjects. The masseter nerve avulsion was effective since the scores lowered. Within 3 years of the operation, electrophysiological EMG depicted no discharge potential with a high frequency, and the total efficiency when paired with the clinical effectiveness was deemed acceptable. The maximal masseter power between the treated and nontreated sides was comparable. The mastication, on comparing, was also as effective as the normal side; however, lower mastication was noted in the first year. The avulsed nerve tissues lacked any apparent demyelination. Masseteric nerve avulsion with temporomandibular arthroscope assistance provided acceptable and stable total effectiveness for the intervention of the hemimasticatory spasm. While the strength of the muscle of the afflicted side was only marginally reduced, its masticatory effectiveness was optimally preserved.

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