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The Levator Veli Palatini: Are all Segments Created Equal?
Jamie L Perry1, Taylor D Snodgrass1, Imani R Gilbert1
1Department of Communication Sciences and Disorders, East Carolina University, Greenville, NC, USA.
Summary
Children with VPI have a different levator veli palatini (LVP) muscle structure. Their intravelar segments are longer and extravelar segments shorter, impacting velopharyngeal function.
Area of Science:
- Anatomy and Physiology
- Speech Pathology
- Craniofacial Anomalies
Background:
- The levator veli palatini (LVP) muscle is crucial for velopharyngeal function.
- Its two segments, intravelar and extravelar, have distinct roles.
- Previous research indicates a potential link between segment length distribution and velopharyngeal closure efficiency.
Purpose of the Study:
- To investigate differences in LVP muscle segment distribution.
- To compare children with cleft palate with and without VPI to controls.
Main Methods:
- Study included 97 children: 37 with cleft palate +/- lip and VPI, 37 controls, and 19 with cleft palate and normal resonance.
- Measurements included mean LVP length, mean extravelar LVP length, and intravelar LVP length.
Main Results:
- Overall LVP length was similar across groups.
- Significant differences were found in segment lengths: intravelar segments were longer in the VPI group.
- Extravelar segments were shorter in the VPI group compared to controls and normal resonance groups.
Conclusions:
- A distinct distribution of LVP muscle segments exists in children with VPI.
- This altered distribution appears disadvantageous for velopharyngeal function.
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