Video-Based Compensatory Movement Assessment for Supporting Upper Limb Rehabilitation Evaluation

Area of Science:

• Biomedical Engineering
• Rehabilitation Science
• Movement Analysis

Background:

• Clinical assessment of upper limb rehabilitation relies on subjective, qualitative evaluations by therapists.
• Objective, quantitative metrics are needed to enhance the precision and consistency of rehabilitation assessments.

Purpose of the Study:

• To introduce and validate a novel quantitative metric, the "compensatory degree," for evaluating upper limb movement quality during rehabilitation.
• To establish a correlation between the "compensatory degree" and expert therapist assessments.

Main Methods:

• Development of a novel metric, the "compensatory degree," derived from video analysis of patient rehabilitation movements.
• Conducting a verification experiment to compare the "compensatory degree" metric with established clinical evaluations.

Main Results:

• The "compensatory degree" metric demonstrated a strong correlation with therapist evaluations for trunk compensatory movements (|r| = 0.79).
• A high correlation was also observed for shoulder compensatory movements (|r| = 0.83), validating the metric's reliability.

Conclusions:

• The "compensatory degree" offers a reliable, quantitative method for assessing upper limb function in rehabilitation settings.
• This novel metric has the potential to improve the objectivity and effectiveness of physical therapy interventions.