ArticleOrphanet journal of rare diseases2025
Maximal mouth opening in infants and toddlers with spinal muscular atrophy: a prospective controlled study.
Article in Orphanet journal of rare diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Swallowing development in infants and toddlers with spinal muscular atrophy following therapy compared to healthy controls: the prospective controlled DySMA trial.Orphanet journal of rare diseases · 2026Article
- A qualitative, mixed-method approach to reaching consensus on function, fatigue, and fatigability outcomes in teens and adults living with spinal muscular atrophy.Orphanet journal of rare diseases · 2025Article
- Biomarkers in spinal muscular atrophy.Frontiers in neurology · 2025Review
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundBulbar function is frequently impaired in patients with spinal muscular atrophy (SMA). Although extremely important for the patient's quality of life, it is difficult to address therapeutically. Due to bulbar dysfunction, maximum mouth opening (MMO) is suspected to be reduced in children with SMA. However, no published MMO values exist for SMA children younger than 24 months. This study presents a novel approach to measuring MMO in infants and toddlers with SMA and compares it with healthy controls.
methodsChildren with SMA (0-24 months) who received disease-modifying therapy at a single neuropediatric center and similarly aged healthy children were prospectively recruited. MMO was measured using a cardboard scale and a custom-designed instrument.
resultsA total of 115 children were included (SMA = 24, healthy controls = 91). Inter-rater reliability between two examiners was excellent (ICC = 0.987, 95% CI 0.959 to 0.995), as was the reliability between the cardboard scale and the custom-designed instrument (ICC = 0.986, 95% CI 0.968 to 0.994). A mixed linear model showed a significant increase of MMO with age, and a significantly wider mouth opening in healthy controls (p < .001).
conclusionFor future research, MMO can provide valuable information about the involvement of cranial nerves, particularly in the context of disease-modifying therapies, even at a very early age.
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