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Related Concept Videos

Degenerative Disc Disease ll: Pathophysiology01:23

Degenerative Disc Disease ll: Pathophysiology

The symptoms of degenerative disc disease arise from a combination of mechanical compression, vascular compromise, and biochemical inflammation, which together disrupt nerve function and produce pain.Mechanical CompressionDisc degeneration reduces height and elasticity, predisposing to herniation of the nucleus pulposus, a major cause of radicular pain. Herniations may be protrusion (bulging with intact annulus), extrusion (nucleus extends beyond disc but remains connected), or sequestration...
Structural Joints: Cartilaginous Joints01:17

Structural Joints: Cartilaginous Joints

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Synchondrosis
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Degenerative Disc Disease I: Introduction01:27

Degenerative Disc Disease I: Introduction

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Herniated Intervertebral Disc l: Introduction

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Center of Mass: Introduction

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Related Experiment Video

Updated: May 9, 2026

Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability
11:30

Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability

Published on: July 25, 2025

Composite motion in cervical disc segments.

N Milne1

  • 1Department of Anatomy and Human Biology, University of Western Australia, Nedlands, Australia.

Clinical Biomechanics (Bristol, Avon)
|August 7, 2013
PubMed
Summary
This summary is machine-generated.

This study reveals how cervical spine motion occurs. The anterior disc acts as a pivot, while the posterior disc and uncinate processes form a socket for vertebral body rolling.

Related Experiment Videos

Last Updated: May 9, 2026

Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability
11:30

Multilevel Oblique Lumbar Interbody Fusion in Degenerative Lumbar Disc Disease with Instability

Published on: July 25, 2025

Area of Science:

  • Biomechanical analysis of the cervical spine.
  • Spinal anatomy and kinematics.

Background:

  • Understanding cervical motion is crucial for diagnosing and treating spinal conditions.
  • Previous studies have not fully elucidated the complex axes of motion in the cervical spine.

Purpose of the Study:

  • To determine the relationship between the axes of motion and the planes of the discs and zygapophyseal joints in cervical motion segments.
  • To analyze the mechanics of composite motion in the cervical spine.

Main Methods:

  • Utilized biplanar radiography to capture cervical motion.
  • Applied principles of rigid body mechanics for analysis.
  • Investigated motion in both full range and unilateral movements.

Main Results:

  • Axes of motion shift depending on the direction and type of movement (e.g., unilateral vs. full range).
  • The orientation of the axis varies with applied moments (axial rotation vs. lateral flexion).
  • Cervical disc segments exhibit distinct variations in axis orientation, particularly between upper and lower segments.

Conclusions:

  • The anterior cervical disc functions as a pivot point.
  • The posterior disc, along with the uncinate processes, acts as a socket guiding vertebral body motion.
  • These findings provide a detailed biomechanical model for cervical spine movement.