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Updated: Mar 17, 2026

Coordinate Mapping of Hyolaryngeal Mechanics in Swallowing
Published on: May 6, 2014
Variations in Head-Neck Posture and Hyoid Kinematics in Patients With Stroke and Aspiration Risk: A Cross-Sectional
Haipeng Jin1, Yanli Huang2, Weihong Xiao3
1Department of Rehabilitation, Xiamen Hospital of Traditional Chinese Medicine, Fujian University of Chinese Medicine, Fujian Province.
Objective:
To observe alterations in head-neck posture and hyoid kinematics in patients with stroke and aspiration risk.
Design:
A prospective observational study.
Setting:
Hospital inpatient unit.
Participants:
A total of 24 patients (N=24) with stroke were included in this study: 12 patients with high aspiration risk (7 men and 5 women) aged 62-77 years (median=72.50; IQR, 64.00-74.00) and 12 patients with low aspiration risk (8 men and 4 women) aged 50-80 years (median=66.00; IQR, 58.25-71.25).
Interventions:
Not applicable.
Main Outcome Measures:
Head-neck posture was assessed by craniovertebral angle (CVA), coronal C2-C7 Cobb angle, and cervical range of motion (CROM). Hyoid kinematics were evaluated via anterior horizontal displacement, superior horizontal displacement, and motion duration.
Results:
Compared with the low aspiration risk group, the high aspiration risk group exhibited a significantly smaller CVA and reduced CROM, along with diminished hyoid displacement (P<.05). Additionally, CROM for active extension was significantly greater than that for passive extension in the high aspiration risk group (z=-2.937, P=.003). Correlation analysis showed that there were significant positive correlations between head-neck posture (CVA and CROM for active and passive extension) and hyoid displacement (superior- horizontal displacement and anterior- horizontal displacement) (P<.001).
Conclusions:
This study observed variations in head-neck posture and hyoid kinematics in patients with stroke and aspiration risk and found positive correlations between them. Our results suggest that abnormal head-neck posture may be a relevant factor influencing swallowing function, and indicate new strategies and insights for patients with stroke.
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