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Updated: May 30, 2026
Event-related Potentials During Target-response Tasks to Study Cognitive Processes of Upper Limb Use in Children with Unilateral Cerebral Palsy
Published on: January 11, 2016
Three-dimensional upper limb movement characteristics in children with hemiplegic cerebral palsy and typically
Ellen Jaspers1, Kaat Desloovere, Herman Bruyninckx
1Department of Rehabilitation Sciences, Faculty of Kinesiology and Rehabilitation Sciences, Katholieke Universiteit Leuven, Tervuursevest 101, 3001 Leuven, Belgium. ellen.jaspers@faber.kuleuven.be
Insights
Children with hemiplegic cerebral palsy (HCP) exhibit distinct upper limb movement patterns compared to typically developing children (TDC). Measuring 3D spatiotemporal and kinematic parameters can identify these pathological movements for targeted treatment.
Area of Science:
- Biomedical Engineering
- Movement Science
- Pediatric Rehabilitation
Background:
- Hemiplegic cerebral palsy (HCP) significantly impacts motor function in children, particularly affecting upper limb movement.
- Understanding the specific kinematic and spatiotemporal differences in upper limb motion is crucial for effective intervention.
Purpose of the Study:
- To identify three-dimensional (3D) spatiotemporal and kinematic parameters that differentiate upper limb movement in children with HCP from typically developing children (TDC).
- To assess the discriminative ability of a standardized measurement protocol for characterizing upper limb pathology in HCP.
Main Methods:
- A standardized protocol involving reach, reach-to-grasp, and gross motor tasks was administered to 20 children with HCP and 20 age-matched TDC.
- 3D spatiotemporal parameters (movement duration, trajectory straightness, maximum velocity) and kinematic parameters (joint angles and waveforms) were measured.
- Analysis followed International Society of Biomechanics recommendations.
Main Results:
- Children with HCP demonstrated longer movement durations, less straight hand trajectories, and lower maximum velocities than TDC.
- Increased trunk movement and reduced shoulder elevation were observed in children with HCP during reaching tasks.
- Children with HCP exhibited less elbow extension and supination, and greater wrist flexion.
Conclusions:
- Distinct 3D upper limb movement characteristics differentiate children with HCP from TDC.
- Combining spatiotemporal and kinematic parameters can aid in identifying pathological movement patterns in HCP.
- This approach supports the development of well-targeted upper limb treatment plans for children with HCP.
Abstract:
The aim of this study was to measure which three-dimensional spatiotemporal and kinematic parameters differentiate upper limb movement characteristics in children with hemiplegic cerebral palsy (HCP) from those in typically developing children (TDC), during various clinically relevant tasks. We used a standardized protocol containing three reach tasks (forwards, upwards, and sideways), two reach-to-grasp tasks (with objects requiring different hand orientations), and three gross motor tasks. Spatiotemporal (movement duration, trajectory straightness, maximum velocity, and timing of maximum velocity), as well as kinematic parameters (discrete angles and waveforms of the trunk, scapula, shoulder, elbow and wrist), were compared between 20 children with HCP (age 10.9 ± 2.9 years) and 20 individually age-matched TDC (age 10.9 ± 3.0 years). Kinematic calculations followed the recommendations from the International Society of Biomechanics. Results showed that children with HCP had longer movement durations, less straight hand trajectories, and lower maximum velocities compared to the TDC. Timing of maximum velocity did not differ between both groups. The movement pathology in children with HCP was highlighted by increased trunk movements and reduced shoulder elevation during reaching and reach-to-grasp. We also measured an increased anterior tilting and protraction of the scapula in children with HCP, although differences were not significant for all tasks. Finally, compared to the TDC, children with HCP used less elbow extension and supination and more wrist flexion to execute all tasks. This study reported distinct 3D upper limb movement characteristics in children with HCP and age-matched TDC, establishing the discriminative ability of the measurement procedure. From a clinical perspective, combining spatiotemporal and kinematic parameters may facilitate the identification of the pathological movement patterns seen in children with HCP and thereby add to a well-targeted upper limb treatment planning.
