# Validation of the Kinematic Assessment Protocol Used in the Technology-Supported Neurorehabilitation System, Rehabilitation Technologies for Hand and Arm (R3THA™), in Children and Teenagers with Cerebral Palsy

## TL;DR

This study validates a technology-based system for assessing hand and arm movement in children with cerebral palsy, showing it works well for older children and aligns with standard clinical tests.

## Contribution

The study validates the R3THA™ assessment protocol for children with cerebral palsy, showing its reliability and correlation with clinical measures in older children.

## Key findings

- R3THA-AP is more reliable for children aged 8 and older.
- Kinematic measurements correlate with the Box and Blocks Test Index and MA2-ROM scores.
- No significant correlations were found with MA2’s accuracy and dexterity measurements.

## Abstract

This study evaluates the R3THA™ assessment protocol (R3THA-AP™), a technology-supported testing module for personalized rehabilitation in children with cerebral palsy (CP). It focuses on the reliability and validity of the R3THA-AP in assessing hand and arm function, by comparing kinematic assessments with standard clinical assessments. Conducted during a 4-week summer camp, the study assessed the functional and impairment levels of children with CP aged 3–18. The findings suggest that R3THA is more reliable for children aged 8 and older, indicating that age significantly influences the protocol’s effectiveness. The results also showed that the R3THA-AP’s kinematic measurements of hand and wrist movements are positively correlated with the Box and Blocks Test Index (BBTI), reflecting hand function and dexterity. Additionally, the R3THA-AP’s accuracy metrics for hand and wrist activities align with the Melbourne Assessment 2’s Range of Motion (MA2-ROM) scores, suggesting a meaningful relationship between R3THA-AP data and clinical assessments of motor skills. However, no significant correlations were observed between the R3THA-AP and MA2’s accuracy and dexterity measurements, indicating areas for further research. These findings validate the R3THA-AP’s utility in assessing motor abilities in CP patients, supporting its integration into clinical practice.