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Related Concept Videos

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...
Degenerative Disc Disease I: Introduction01:27

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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...
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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...

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Related Experiment Video

Updated: Jul 18, 2026

A Mobile Outside-in Technique of Transforaminal Lumbar Endoscopy for Lumbar Disc Herniations
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New Hope for Treating Intervertebral Disc Degeneration: Microsphere-Based Delivery System.

Taowen Guo1,2, Xiaobo Zhang3, Yicun Hu1,2

  • 1Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou, China.

Frontiers in Bioengineering and Biotechnology
|August 5, 2022
PubMed
Summary

Novel microsphere delivery systems offer a promising approach for intervertebral disc degeneration (IVDD) treatment. This strategy targets the source of the problem, potentially regenerating the disc and alleviating low back pain (LBP).

Keywords:
delivery systeminflammationintervertebral disc degenerationmechanismmicrospheresregenerationtreatment

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Area of Science:

  • Regenerative Medicine
  • Biomaterials Science
  • Orthopedics

Background:

  • Intervertebral disc degeneration (IVDD) is a primary cause of low back pain (LBP).
  • Current treatments for IVDD primarily manage symptoms and do not address the underlying pathology.
  • The complex mechanisms of IVDD necessitate innovative therapeutic strategies.

Purpose of the Study:

  • To review the mechanisms of IVDD and limitations of existing therapies.
  • To explore the application of microsphere delivery systems for IVD regeneration.
  • To provide insights into novel treatment approaches for IVDD.

Main Methods:

  • Review of current literature on IVDD mechanisms and treatments.
  • Focus on microsphere-based delivery systems for targeted therapy.
  • Discussion of drug delivery, cell therapy, and gene therapy applications using microspheres.

Main Results:

  • Microsphere carriers demonstrate excellent injectability, biocompatibility, and biodegradability.
  • These systems enable targeted delivery and controlled release of therapeutic agents.
  • Microspheres support cell implantation and directed differentiation for IVD regeneration.

Conclusions:

  • Microsphere-based strategies hold significant promise for IVD regeneration.
  • This approach offers a potential solution for treating IVDD at its source.
  • Further research into microsphere applications could revolutionize LBP treatment.