ArticleLaryngoscope investigative otolaryngology2020
Horizontal semicircular canal jam: Two new cases and possible mechanisms.
Article in Laryngoscope investigative otolaryngology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Pathophysiological Variants of Horizontal Semicircular Canal Benign Paroxysmal Positional Vertigo: Toward an Integrative Model Based on Otoconial Location and Cupular Dynamics.Audiology research · 2026Review
- Review
- Advances in Benign Paroxysmal Positional Vertigo: Updated Insights on Diagnostic Pitfalls and Management.Journal of audiology & otology · 2026Review
- Revisiting BPPV: Incidence and Behavior of Atypical Variants.Audiology research · 2025Article
- Epley's Influence on Horizontal Canal BPPV Variants.Audiology research · 2025Review
- Partial Treatment During BPPV Diagnostic Maneuvers.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2024Article
- Prevalence of Horizontal Canal Variant in 3,975 Patients With Benign Paroxysmal Positional Vertigo: A Cross-sectional Study.Neurology. Clinical practice · 2023Article
- Resolution of atypical posterior semicircular canal BPPV: evidence for putative short-arm location.BMJ case reports · 2023Article
- Spontaneous Upbeat Nystagmus and Selective Anterior Semicircular Canal Hypofunction on Video Head Impulse Test: A New Variant of Canalith Jam?Journal of audiology & otology · 2022Article
- Modified Interpretations of the Supine Roll Test in Horizontal Canal BPPV Based on Simulations: How the Initial Position of the Debris in the Canal and the Sequence of Testing Affects the Direction of the Nystagmus and the Diagnosis.Frontiers in neurology · 2022Article
- Spontaneous Jamming of Horizontal Semicircular Canal Combined with Canalolithiasis of Contralateral Posterior Semicircular Canal.Journal of audiology & otology · 2022Article
- The Video Head Impulse Test in the acute stage of posterior canal benign paroxysmal positional vertigo.Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale · 2021Article
- Horizontal semicircular canal jam: Two new cases and possible mechanisms.Laryngoscope investigative otolaryngology · 2020Article
- Feasibility of Using the Video-Head Impulse Test to Detect the Involved Canal in Benign Paroxysmal Positional Vertigo Presenting With Positional Downbeat Nystagmus.Frontiers in neurology · 2020Article
- Article
Corrections and comments
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionBenign paroxysmal positional vertigo (BPPV) of the horizontal semicircular canal (hSCC) can present with otoconia blocking its lumen (canalith jam), with signs and symptoms that make it difficult to distinguish from central nervous system pathology.
objectiveHere we report two cases of canalith jam affecting the hSCC and offer a theoretical mechanism based on known vestibular neurophysiology.
methodsWe use video-oculography to document the canalith jam and show the moment the otoconia loosen.
resultsCanalith jam is a rare form of BPPV remedied with repositioning maneuvers.
conclusionClinicians should consider canalith jam as a mechanism for BPPV when the nystagmus is (a) Direction fixed with fixation removed and during positional testing; (b) Velocity dependent on supine head position; (c) Converts to geotropic directional changing nystagmus.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.