Estimating Jaw, Neck, and Shoulder Range of Motion Using an AI Model

February 9, 2026 updated by: National Taiwan University Hospital

A Novel Technique for Estimating Maximal Jaw Movement, Neck and Shoulder Joint Range of Motion Using an Artificial Intelligence Model

This observational study aims to develop an AI-based system for tracking mandibular and shoulder movements using deep learning techniques. It will compare AI-generated pose estimations with gold standard measurements to assess accuracy, particularly in patients with functional impairments from oral cancer treatment, such as trismus, spinal accessory nerve dysfunction, neck dystonia, and radiation fibrosis.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Due to the involvement of various structures, patients with oral cancer may experience functional impairments after treatment, such as trismus, spinal accessory nerve dysfunction, neck dystonia, radiation fibrosis, and fatigue. This observational study aims to develop an AI-based system for tracking mandibular and shoulder movements using deep learning techniques. AI-generated pose estimations will be compared with gold standard measurements: maximal mouth opening will be compared with caliper measurements, and Therabilte scale, while shoulder abduction range of motion will be compared with universal goniometer measurements. We will recruit 20 healthy adults and 20 oral cancer patients. Data on maximal mouth opening and shoulder abduction will be collected through video recordings, calipers, Therabilte scale, and universal goniometers. The videos will be analyzed using deep learning to estimate mouth opening and shoulder abduction angles. These estimates will then be compared with the gold standard measurements. The Intraclass Correlation Coefficient (ICC), Mean Absolute Error (MAE), and Coefficient of Variation (CV) will be used as performance indicators to assess and compare the reliability, accuracy, and consistency of the models.

Study Type

Observational

Enrollment (Estimated)

40

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • Taiwan
      • Taipei, Taiwan, 100
        • Recruiting
        • School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

Yes

Sampling Method

Non-Probability Sample

Study Population

primary care clinic, community, university

Description

Inclusion Criteria:

  • Healthy adults without a history of head, neck or shoulder injury or surgery, and without HNC-related radiotherapy or chemoradiotherapy
  • Oral cancer patients with trismus, clinical signs of neck or shoulder joint impairment after oral cancer surgery or radiotherapy
  • Age between 20 and 65 years

Exclusion Criteria:

  • Could not communicate
  • Had any disorder that could influence movement performance

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
oral cancer patients
oral cancer patients with trismus, neck, or shoulder problems
Behavioral: observation alone
observation of maximal mouth opening, lateral excursion, and range of motion of shoulder abduction, neck joint
healthy adults
healthy adults without history of trismus, neck, or shoulder problems
Behavioral: observation alone
observation of maximal mouth opening, lateral excursion, and range of motion of shoulder abduction, neck joint

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
range of motion of shoulder abduction
Time Frame: The date of enrollment
range of motion of shoulder abduction
The date of enrollment
maximal mouth opening
Time Frame: The date of enrollment
maximal mouth opening
The date of enrollment
maximal lateral excursion of mandible
Time Frame: The date of enrollment
maximal lateral excursion of mandible
The date of enrollment
range of motion of neck
Time Frame: The date of enrollment
lateral side bending and rotation of the neck
The date of enrollment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Taiwan University Hospital

Investigators

  • Principal Investigator: Yueh-Hsia Chen, PhD, School and Graduate Institute of Physical Therapy, College of Medicine, National Taiwan University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

December 5, 2024

Primary Completion (Estimated)

December 31, 2026

Study Completion (Estimated)

December 31, 2026

Study Registration Dates

First Submitted

October 3, 2024

First Submitted That Met QC Criteria

October 3, 2024

First Posted (Actual)

October 8, 2024

Study Record Updates

Last Update Posted (Actual)

February 11, 2026

Last Update Submitted That Met QC Criteria

February 9, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 202403103RINA

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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