Changes in lower extremity kinematics with free and restricted arm swings in children with unilateral cerebral palsy
İlker Abdullah Sarıkaya1, Meltem Çelik2, Osman Doğan2
1Ota Jinemed Hospital Istanbul, Turkey.
Insights
Restricting arm swing in children with unilateral cerebral palsy (UCP) can improve pelvic alignment and knee flexion during gait. These findings offer new insights for UCP rehabilitation strategies.
Area of Science:
- Biomechanical analysis
- Pediatric gait disorders
- Neurorehabilitation
Background:
- Children with unilateral cerebral palsy (UCP) often display gait asymmetry impacting function.
- Arm swing is integral to gait mechanics; asymmetric arm movements may affect lower extremity kinematics.
Purpose of the Study:
- To investigate the effect of restricting arm swing on lower extremity kinematic parameters in children with UCP.
- To determine how different arm restriction conditions influence gait patterns.
Main Methods:
- A prospective cohort study involving 19 children (5-18 years) with UCP.
- 3D gait analysis under four conditions: no arm restriction (NAR), healthy arm restricted (HAR), affected arm restricted (AAR), and both arms restricted (BAR).
- Statistical analysis using Friedman Test and pairwise comparisons with bootstrapping.
Main Results:
- Healthy arm restriction (HAR) led to significant improvements in pelvic rotation and obliquity towards neutral alignment.
- Both arms restricted (BAR) increased knee flexion during the swing phase, a common deficit in UCP.
- Ankle dorsiflexion improved with both arm restriction conditions, though it remained impaired with HAR alone.
Conclusions:
- Arm restriction influences lower extremity gait kinematics in children with UCP.
- Restricting the unaffected arm corrects pelvic kinematics; restricting both arms enhances swing phase knee flexion.
- Findings provide valuable data for developing gait rehabilitation strategies for children with UCP.
Background:
Children with unilateral cerebral palsy (UCP) often exhibit asymmetry, which significantly impacts gait function. Arm swing plays a crucial role in gait mechanics and asymmetric arm movements are hypothesized to influence lower extremity kinematics.
Research Question:
How does restricting arm swing in children with unilateral cerebral palsy affect the kinematic parameters of lower extremity?
Methods:
A prospective cohort study was conducted with 19 children aged 5-18, diagnosed with UCP, who were able to walk independently. Participants underwent 3D gait analysis under four conditions: no arm restriction (NAR), healthy arm restricted (HAR), affected arm restricted (AAR), and both arms restricted (BAR). Comparative analysis was conducted using the Friedman Test and multiple pairwise comparisons with bootstrapping.
Results:
Pelvic rotation and obliquity showed significant improvements with HAR compared to NAR, with the pelvis moving closer to neutral alignment. Knee flexion during the swing phase increased with BAR, addressing a common deficit in UCP patients. Ankle dorsiflexion improved with both arm restrictions but remained impaired with only HAR.
Conclusion:
In conclusion, arm restriction has an influence on lower extremity gait kinematic in children with UCP. Restriction of the unaffected arm movement has a corrective effect on pelvic kinematics. Similarly, restricting both arms improve swing phase knee flexion. These results can be useful for gait rehabilitation strategies of UCP children.
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