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Exploring Kinetic and Kinematic Finger Individuation Capability in Children With Hemiplegic Cerebral Palsy
James V McCall1, Xiaogang Hu2, Derek G Kamper1
1Joint Department of Biomedical Engineering, 6798University of North Carolina at Chapel Hill/ North Carolina State University, Raleigh, NC, USA.
Insights
Children with hemiplegic cerebral palsy (hCP) show significantly reduced finger force and movement individuation in their paretic hands compared to typically developing peers. Targeted training may improve digit independence in both hands for children with CP.
Area of Science:
- Neuroscience
- Developmental Pediatrics
- Rehabilitation Medicine
Background:
- Fine manual dexterity develops throughout childhood.
- Quantifying independent finger control and the effects of perinatal brain injury is crucial.
- Hemiplegic cerebral palsy (hCP) affects motor control, but digit individuation deficits are not well-characterized.
Purpose of the Study:
- To assess and compare finger force and movement individuation in children with hCP and typically developing (TD) children.
- To investigate the impact of hemiplegic cerebral palsy on digit independence.
Main Methods:
- Evaluated finger force individuation using five independent load cells.
- Captured joint movement individuation through video tracking.
- Compared 8-14 year old children with hCP (n=4) and TD children (n=10).
Main Results:
- No significant differences in individuation indices were found between dominant and non-dominant hands in TD children.
- Individuated force and movement were substantially reduced in the paretic hands of children with hCP compared to their non-paretic hands (p < 0.001).
- TD participants showed the greatest independent control in the thumb.
Conclusions:
- Children with hCP exhibit significant loss of digit individuation in the paretic hand.
- Deficits in digit independence were also observed in the non-paretic hand of children with hCP.
- Findings suggest potential benefits from targeted training programs focusing on digit independence for children with CP.
Abstract:
While fine manual dexterity develops over time, the extent to which children show independent control of their digits in each hand and the impact of perinatal brain injury on this individuation have not been well quantified. Our goal in this study was to assess and compare finger force and movement individuation in 8-14 year old children with hemiplegic cerebral palsy (hCP; n = 4) and their typically developing peers (TD; n = 10). We evaluated finger force individuation with five independent load cells and captured joint movement individuation with video tracking. We observed no significant differences in individuation indices between the dominant and non-dominant hands of TD children, but individuated force and movement were substantially reduced in the paretic versus non paretic hands of children with hCP (p < 0.001). In TD participants, the thumb tended to have the greatest level of independent control. This small sample of children with hCP showed substantial loss of individuation in the paretic hand and some deficits in the non-paretic hand, suggesting possible benefit from targeted training of digit independence in both hands for children with CP.
