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Related Concept Videos

Degenerative Disc Disease I: Introduction01:27

Degenerative Disc Disease I: Introduction

Degenerative disc disease is a chronic condition in which intervertebral discs gradually lose structure and function. It is not infectious or autoimmune; rather, it results from age-related biochemical and mechanical changes, influenced by genetic, metabolic, and environmental factors.Structure and Function of DiscsThe spine contains 23 intervertebral discs that absorb load, distribute forces, maintain spacing, and allow flexibility. Each disc consists of a nucleus pulposus, a gel-like core...
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...
Herniated Intervertebral Disc l: Introduction01:29

Herniated Intervertebral Disc l: Introduction

Intervertebral disc herniation refers to the displacement of the nucleus pulposus (the gel-like inner core of the disc) through a tear or weakened area in the annulus fibrosus (the outer fibrous ring). The displaced disc material extends beyond the normal boundaries of the disc space and may compress or irritate nearby spinal nerve roots or, less commonly, the spinal cord.Etiology and Risk FactorsHerniation commonly results from degeneration, in which aging reduces disc hydration and...

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Related Experiment Video

Updated: Jul 5, 2026

Surgical Technique for the Implantation of a Biomimetic Artificial Intervertebral Disc in a Goat Animal Model
07:06

Surgical Technique for the Implantation of a Biomimetic Artificial Intervertebral Disc in a Goat Animal Model

Published on: October 10, 2025

[Cervical disc prosthetics].

I Ivanov, A Petkov, F V Calenbergh

    Khirurgiia
    |May 8, 2008
    PubMed
    Summary
    This summary is machine-generated.

    Cervical disc replacement using a functional disc prosthesis offers a promising alternative to fusion surgery. This innovative technique preserves motion and alleviates symptoms in patients with cervical spondylosis.

    More Related Videos

    Anterior Cervical Discectomy and Fusion in the Ovine Model
    06:11

    Anterior Cervical Discectomy and Fusion in the Ovine Model

    Published on: October 5, 2009

    Related Experiment Videos

    Last Updated: Jul 5, 2026

    Surgical Technique for the Implantation of a Biomimetic Artificial Intervertebral Disc in a Goat Animal Model
    07:06

    Surgical Technique for the Implantation of a Biomimetic Artificial Intervertebral Disc in a Goat Animal Model

    Published on: October 10, 2025

    Anterior Cervical Discectomy and Fusion in the Ovine Model
    06:11

    Anterior Cervical Discectomy and Fusion in the Ovine Model

    Published on: October 5, 2009

    Area of Science:

    • Neurosurgery
    • Orthopedic Surgery
    • Biomedical Engineering

    Background:

    • Traditional cervical fusion surgery for disc herniation can lead to accelerated degeneration in adjacent spinal levels.
    • Preserving natural biomechanics at the operated level is crucial for improving long-term surgical outcomes.

    Observation:

    • A novel surgical technique involving discectomy and implantation of a Bryan cervical disc prosthesis (Medtronic) was employed in three patients with symptomatic cervical spondylosis.
    • The procedure involved precise calibration and shaping of the vertebral endplates to accommodate the prosthetic device.

    Findings:

    • All three patients experienced significant regression of subjective complaints and neurological symptoms post-operatively.
    • Dynamic cervical X-rays demonstrated preserved range of motion at the treated spinal segment.

    Implications:

    • Cervical discectomy with functional disc prosthesis implantation presents a viable alternative to standard anterior discectomy with corporodesis, particularly for younger patients.
    • This approach may help mitigate the long-term complications associated with spinal fusion and enhance patient recovery.