Related Experiment Video
Updated: Apr 15, 2026
08:40
Isokinetic Robotic Device to Improve Test-Retest and Inter-Rater Reliability for Stretch Reflex Measurements in Stroke Patients with Spasticity
Published on: June 12, 2019
8.0K
Test-retest reliability and convergent validity of a computer based hand function test protocol in people with
Cynthia S Srikesavan1, Barbara Shay2, Tony Szturm2
1Faculty of Graduate Studies, University of Manitoba, Winnipeg, Canada.
The Open Orthopaedics Journal
|April 11, 2015
Summary
A new computer-based tool reliably assesses hand function in arthritis patients by measuring object manipulation tasks. It objectively quantifies performance and tracks pain reduction, offering a more comprehensive evaluation than traditional methods.
Area of Science:
- Biomedical Engineering
- Rehabilitation Science
- Orthopedics
Background:
- Hand function impairment significantly impacts daily living for individuals with arthritis.
- Existing hand function assessments often rely on subjective measures or limited task scopes.
- Objective quantification of task performance in arthritis is crucial for effective rehabilitation.
Purpose of the Study:
- To determine the test-retest reliability and convergent validity of a novel computer-based hand function assessment tool.
- To evaluate the tool's ability to quantify task performance during object manipulations in individuals with arthritis.
- To assess the correlation between objective performance measures and patient-reported outcomes.
Main Methods:
- Forty participants with rheumatoid arthritis (RA) or hand osteoarthritis (HOA) performed three object manipulation tasks twice.
- Objects were instrumented with motion sensors, interacting with computer-generated targets.
- Task performance was correlated with grip strength, Nine Hole Peg Test, DASH, and HAQ scores; pain and stiffness were recorded pre- and post-task.
Main Results:
- The assessment protocol demonstrated moderate to high test-retest reliability (ICCs 0.5–0.84).
- Task performance showed low to moderate correlations with self-reported composite scores (Spearman rho <0.7).
- Significant reductions in joint pain and stiffness were observed post-task (p<0.05).
Conclusions:
- The computer-based tool offers reliable and valid hand function assessment for individuals with RA or HOA.
- It provides objective task performance measures, unlike subjective or limited traditional methods.
- The tool tracks pain and stiffness changes, offering a more holistic evaluation relevant to daily life activities.
