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Assessment of sensorimotor functions after traumatic brain injury (TBI) in childhood - Methodological aspects
Kerstin Jöhnk1, Johann P. Kuhtz-Buschbeck, Henning Stolze
1Department of Physiology, Christian-Albrechts-Universität, Kiel, Germany.
Insights
Evaluating sensorimotor functions after traumatic brain injury (TBI) in children requires diverse methods. Quantitative movement analysis is crucial for tracking recovery, revealing deficits in fine motor skills and gait, and guiding future research.
Area of Science:
- Neuroscience
- Rehabilitation Medicine
- Pediatric Neurology
Background:
- Traumatic Brain Injury (TBI) significantly impacts sensorimotor functions in children.
- Standard clinical assessments may not fully capture the nuances of motor recovery post-TBI.
Purpose of the Study:
- To introduce and discuss qualitative and quantitative methods for evaluating sensorimotor functions after childhood TBI.
- To assess the efficacy of various methods in documenting the recovery course through a case study.
Main Methods:
- A single-case follow-up study of a child with severe TBI compared to a healthy control group.
- Utilized neurological examination, clinical scales (Barthel-Index, Terver Numeric Score, Rappaport Disability Rating Scale), and motor tests (KTK, Motor Function Score).
- Included quantitative gait analysis (spatiotemporal parameters) and kinematic assessment of hand motor functions.
Main Results:
- Quantitative movement analysis identified slowing of movements and compensatory strategies as primary motor disorders.
- Significant deficits were observed in fine motor skills (hand movements) and gait, with averaged z-scores of 1.86 and 1.3, respectively.
- Recovery showed a strong initial improvement followed by stagnation, highlighting the limitations of standard clinical scores in documenting the full recovery trajectory.
Conclusions:
- A combination of qualitative and quantitative methods, with an emphasis on functional and kinematic assessments, is essential for comprehensive sensorimotor evaluation post-TBI.
- Procedural uniformity and the integration of diverse assessment techniques are necessary for accurate monitoring of recovery in pediatric TBI.
- Further research is needed to refine and standardize these evaluation methods.
Abstract:
Various basic qualitative and quantitative methods for the evaluation of sensorimotor functions after Traumatic Brain Injury (TBI) are introduced and discussed. Methodological aspects are illustrated by a single case follow-up study of a child after severe TBI (age 11; 7-12;1 yrs; 6, 8 and 12 month post TBI) in comparison to an age-matched healthy control group (N=16). The evaluation consisted of neurological investigation, Barthel-Index, Terver Numeric Score for Functional Assessment, Rappaport Disability Rating Scale (modified version), a coordination-test for children (KTK), a pilot-tested Motor Function Score, quantitative evaluation of spatiotemporal gait parameters on a walkway and on a treadmill, and the kinematic assessment of hand motor functions. Quantitative movement analyses revealed two general types of motor disorder: Slowing of movements and compensatory motor strategies. Averaged z-scores showed deficits, which were pronounced in fine motor skills (hand movements: 1.86, gait: 1.3). During follow-up, a strong improvement rate during the first (-0.48 z-scores) and nearly no improvement rate (-0.03 z-scores) during the second time interval was seen. Clinical scores and developmental tests were not able to document the whole restitutional course, whereas motor tests with special emphasis on functional aspects and the quantitative movement assessment seemed to be suitable methods. We conclude that a sufficient evaluation of sensorimotor functions after TBI in childhood needs an increase in procedural uniformity on onehand and the combination of various qualitative and quantitative methods on the other hand. To connect both claims, further research is necessary.