Sollerman Hand Function Sub-Test "Write with a Pen": A Computer-Vision-Based Approach in Rehabilitation Assessment.

Area of Science:

• Rehabilitation Medicine
• Computer Vision
• Biomedical Engineering

Background:

• Impaired hand function is a common stroke consequence, necessitating objective motor recovery assessments.
• The Sollerman Hand Function Test (SHT) evaluates daily activity capacity but requires in-person therapist administration.
• Current limitations include time constraints and reliance on clinical settings for SHT administration.

Purpose of the Study:

• To develop a computer-vision-based system for the "Write with a pen" sub-test of the SHT.
• To create an accessible and cost-effective tool for assessing hand function recovery.
• To provide an accurate hand spasticity evaluator integrated into the system.

Main Methods:

• Utilized a single RGB camera for data acquisition, eliminating the need for specialized hardware.
• Implemented the original SHT guidelines and scoring methods within the computer-vision application.
• Developed algorithms to analyze hand movements and evaluate spasticity.

Main Results:

• The proposed system accurately replicates the SHT's "Write with a pen" sub-test.
• The application demonstrates feasibility on lower-end hardware, enhancing accessibility.
• Preliminary findings from real-world usage show promising results for rehabilitation monitoring.

Conclusions:

• A computer-vision approach offers a viable, accessible alternative for SHT assessment.
• This technology can improve the efficiency and consistency of hand function evaluation post-stroke.
• Further research and real-world application will refine the system for broader clinical adoption.