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

Articulations of the Vertebral Column

Articulations of the Vertebral Column

In addition to being held together by the intervertebral discs, adjacent vertebrae also articulate with each other at synovial joints formed between the superior and inferior articular processes called zygapophysial joints (facet joints). These are plane joints that provide for only limited motions between the vertebrae. The orientation of the articular processes at these joints varies in different regions of the vertebral column and serves to determine the types of motions available in each...

Rotational Motion about a Fixed Axis

Rotational Motion about a Fixed Axis

A rigid body's rotation around a fixed axis makes every point within it trace a circular path around a specific line or point. The term given to this type of spinning is defined by the angular position, symbolized by the angle θ. This angle is gauged from a static reference line to the revolving object. From this angular position, any variation is referred to as angular displacement, denoted by dθ. The extent of this displacement can be calculated in degrees, radians, or...

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...

Rotation of Asymmetric Top

Rotation of Asymmetric Top

By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment.
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...

You might also read

Related Articles

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

Sort by

Same author

Anticoagulant Treatment of a Thrombosed Giant Portal Vein Aneurysm.

Journal of the Belgian Society of Radiology·2024

Same author

Father and Son Jointly Announced the Discovery of Röntgen Rays in Two Consecutive Press Articles - Revisited.

Journal of the Belgian Society of Radiology·2023

See all related articles

Search research articles

Related Experiment Video

Updated: Oct 4, 2025

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device

Published on: November 8, 2024

Traumatic Atlanto-Axial Rotatory Fixation.

Damla Can¹, Unal Duran¹, Robert Ferdinand Dondelinger¹

¹Centre Hospitalier Universitaire de Liège, Département de physique Médicale, Service médical de radiodiagnostic, 4000 Liège, Belgique, BE.

Journal of the Belgian Society of Radiology

|February 2, 2022

Summary

Atlanto-axial rotatory fixation involves C1 and C2 vertebrae rotation. In this condition, CT scans reveal C1 rotation on C2, with both vertebrae moving as a single unit during head movement.

Keywords:

AARF CT atlantoaxial fixation torticollis trauma

More Related Videos

A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique

A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique

Published on: January 6, 2023

Novel Triple-Loop Technique for Suturing TFCC Injuries without Transosseous Tunnel

Novel Triple-Loop Technique for Suturing TFCC Injuries without Transosseous Tunnel

Published on: May 23, 2025

Related Experiment Videos

Last Updated: Oct 4, 2025

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device

Published on: November 8, 2024

A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique

A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique

Published on: January 6, 2023

Novel Triple-Loop Technique for Suturing TFCC Injuries without Transosseous Tunnel

Novel Triple-Loop Technique for Suturing TFCC Injuries without Transosseous Tunnel

Published on: May 23, 2025

Area of Science:

Orthopedics
Radiology
Neurosurgery

Background:

Atlanto-axial rotatory fixation is a complex condition affecting the upper cervical spine.
Understanding the biomechanics of the atlanto-axial joint is crucial for diagnosis and treatment.

Observation:

Computed tomography (CT) imaging in a neutral head position typically demonstrates rotation of the first cervical vertebra (C1) on the second cervical vertebra (C2).
This rotation is a key indicator of atlanto-axial rotatory fixation.

Findings:

During active or passive head rotation, the atlas (C1) and axis (C2) vertebrae move concurrently as a single functional unit.
This coordinated movement pattern differentiates fixation from normal physiological rotation.

Implications:

Accurate diagnosis through CT imaging is essential for appropriate management strategies.
Understanding the dynamic behavior of the atlanto-axial joint aids in surgical planning and predicting treatment outcomes.