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Related Experiment Video

Updated: Sep 19, 2025

An Objective and Child-friendly Assessment of Arm Function by Using a 3-D Sensor
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Development of a web-based application for initial hand evaluation and 3D scanning: A pilot feasibility and validity

Maryam Farzad1, Joy MacDermid2, Louis Ferreira3

  • 1Hand and Upper Limb Center, St. Joseph's Health Center, London, ON, Canada; Neuromusculoskeletal Rehabilitation Reseach Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran; School of Physical Therapy, Department of Health and Rehabilitation Sciences, University of Western Ontario, London, ON, Canada; Orfit Industries, Wijnegem, Belgium.

Journal of Hand Therapy : Official Journal of the American Society of Hand Therapists
|June 18, 2025
PubMed
Summary

A new web application, HAND SCANS, enables remote hand evaluation and 3D scanning using smartphones. This validated tool shows high accuracy and user satisfaction, improving access to specialized care.

Keywords:
3D scanningFeasibilityHand evaluationTelehealthValidity

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Area of Science:

  • Digital health technologies
  • Orthopedics
  • Rehabilitation medicine

Background:

  • Digital health advancements offer remote evaluation for upper extremity conditions.
  • Limited comprehensive, validated, user-friendly platforms exist for remote hand assessment with 3D scanning.
  • The HAND SCANS application addresses this gap.

Purpose of the Study:

  • To develop and validate HAND SCANS, a novel web application for remote hand evaluation and 3D scanning.
  • To assess the application's feasibility, accuracy, and user satisfaction among clinicians and patients.
  • To explore its potential in telehealth models.

Main Methods:

  • Prospective validation and feasibility study design.
  • Development of a web-based application for patient-reported outcomes and smartphone-based 3D hand scanning.
  • Comparison of application measurements (range of motion, sensory function, pain, grip strength) with clinical standards and photogrammetry.
  • Gathering patient and clinician feedback on feasibility and usability.

Main Results:

  • The application demonstrated strong agreement with clinical gold standards for range of motion, sensory testing, and pain.
  • Smartphone-captured 3D hand scans achieved high dimensional accuracy compared to conventional photogrammetry.
  • High user satisfaction was reported, highlighting ease of use and remote care potential.
  • Areas for improvement identified include image quality and user interface.

Conclusions:

  • The HAND SCANS application is a validated and feasible tool for remote hand evaluation and 3D scanning.
  • Integration into telehealth can enhance access to specialized hand assessments, particularly in remote or underserved areas.
  • Further development is recommended to improve image quality and user experience.