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Gait Analysis in Rett Syndrome: Integrating Linear and Nonlinear Techniques
Dacia Martinez Diaz1,2, Brock Futrell1,2, Bernhard Suter3,4
1Department of Health and Human Performance, University of Houston, Houston, TX, USA.
Journal of Child Neurology
|September 19, 2025
Summary
Gait analysis in Rett syndrome reveals impaired lower limb coordination and reduced joint motion. Targeted interventions can improve mobility for individuals with this rare neurodevelopmental disorder.
Area of Science:
- Neuroscience
- Biomechanical Engineering
- Developmental Pediatrics
Background:
- Rett syndrome is a rare neurodevelopmental disorder affecting girls, characterized by significant impairments in walking and postural control.
- Understanding the specific gait abnormalities is crucial for developing effective therapeutic strategies.
Purpose of the Study:
- To quantitatively analyze and compare the gait characteristics of females with Rett syndrome and age-matched neurotypical controls.
- To identify specific lower limb kinematic patterns associated with gait deficits in Rett syndrome.
Main Methods:
- Bilateral sagittal plane joint angles (hip, knee, ankle) were analyzed in 22 females with Rett syndrome across three age groups and compared to controls.
- Gait parameters included joint range of motion, stride time, peak angular velocity, angle-angle diagrams, phase portrait areas, and asymmetries.
Main Results:
- Individuals with Rett syndrome exhibited reduced joint range of motion and angular velocity.
- Greater gait parameter asymmetries in Rett syndrome indicated disrupted bilateral coordination.
- Proximal joint coordination was preserved, but ankle movement showed increased variability, though resembling controls in older participants (9-14 years).
Conclusions:
- The study identifies distinct lower limb motion patterns contributing to gait impairments in Rett syndrome.
- Findings provide a basis for targeted interventions aimed at improving mobility and postural control in affected individuals.
