Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Relative Motion Analysis using Rotating Axes-Problem Solving

Relative Motion Analysis using Rotating Axes-Problem Solving

Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

An Angiotensin II Receptor Blocker Suppresses Glucose-Induced Oxidative Stress in Human Rotator Cuff-Derived Cells.

Journal of orthopaedic research : official publication of the Orthopaedic Research Society·2026

Same author

The Importance of Exercise Habits for Preventing Osteoporosis in Postmenopausal Women: Insights From the COVID-19 Pandemic.

Journal of orthopaedic research : official publication of the Orthopaedic Research Society·2026

Same author

Potential Effect of Imeglimin on Mitochondrial Function in Subsynovial Connective Tissue of Idiopathic Carpal Tunnel Syndrome.

Journal of orthopaedic research : official publication of the Orthopaedic Research Society·2025

Same author

Effects of glutaminase 1 inhibitor on rotator cuff derived cells: a preliminary report in 12 patients.

BMC musculoskeletal disorders·2025

Same author

A bad break: mechanisms and assessment of acute and chronic pain after bone fracture.

Pain·2025

Same author

Combination Therapy of Losartan and Fisetin Reduces Senescence and Enhances Osteogenesis in Human Bone Marrow-Derived Mesenchymal Stem Cells.

Journal of tissue engineering and regenerative medicine·2025

Search research articles

Related Experiment Video

Updated: May 10, 2026

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Published on: February 10, 2015

Estimation of Shoulder Joint Rotation Angle Using Tablet Device and Pose Estimation Artificial Intelligence Model.

Shunsaku Takigami¹, Atsuyuki Inui¹, Yutaka Mifune¹

¹Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan.

Sensors (Basel, Switzerland)

|May 11, 2024

Summary

This study introduces an AI-powered method for accurately measuring shoulder rotation angles, overcoming traditional goniometer limitations. The novel approach combines pose estimation AI and machine learning for precise analysis in sports and rehabilitation.

Keywords:

artificial intelligence range of motion shoulder

More Related Videos

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Published on: March 14, 2017

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

Related Experiment Videos

Last Updated: May 10, 2026

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact

Published on: February 10, 2015

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Video Movement Analysis Using Smartphones ViMAS: A Pilot Study

Published on: March 14, 2017

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

Area of Science:

Biomechanics
Artificial Intelligence
Machine Learning

Background:

Traditional goniometers present challenges in accurately measuring complex shoulder joint movements, particularly internal/external rotation.
The intricate base and moving axes of the shoulder complicate angle measurements from an upright position.

Purpose of the Study:

To develop and evaluate a novel method for estimating shoulder joint internal/external rotation angles.
To leverage pose estimation artificial intelligence (AI) and machine learning to overcome the limitations of traditional measurement techniques.

Main Methods:

Utilized pose estimation AI to extract coordinate parameters from shoulder movement videos of 10 healthy volunteers.
Trained machine learning models, including linear regression and Light GBM, using these parameters and smartphone angle device measurements as ground truth.
Compared the performance of different machine learning models in estimating shoulder rotation angles.

Main Results:

The Light GBM model achieved a high correlation coefficient of 0.999 and a low Mean Absolute Error (MAE) of 0.945.
The linear regression model yielded a correlation coefficient of 0.971 and an MAE of 5.778.
The developed method accurately estimates internal and external rotation angles from a direct-facing view.

Conclusions:

The combination of pose estimation AI and machine learning offers a precise and accessible method for measuring shoulder rotation.
This AI-driven approach holds significant value for analyzing motor movements in sports performance and physical rehabilitation.
The findings suggest a potential advancement in non-invasive joint angle assessment technologies.