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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

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...

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Related Experiment Video

Updated: May 8, 2026

Transtubular Endoscopic Posterolateral Decompression for L5-S1 Lumbar Lateral Disc Herniation
10:09

Transtubular Endoscopic Posterolateral Decompression for L5-S1 Lumbar Lateral Disc Herniation

Published on: October 14, 2022

Relationship between physical work load and lumbar disc herniation.

M K Ahsan1, T Matin, M I Ali

  • 1Dr Md Kamrul Ahsan, Associate Professor of Spinal Surgery, Department of Orthopaedic Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbagh, Dhaka, Bangladesh.

Mymensingh Medical Journal : MMJ
|August 29, 2013
PubMed
Summary
This summary is machine-generated.

Physical workload significantly increases the risk of Lumbar Disc Herniation (LDH). Heavy physical labor and prolonged work hours are strongly associated with developing this disabling spinal condition.

Related Experiment Videos

Last Updated: May 8, 2026

Transtubular Endoscopic Posterolateral Decompression for L5-S1 Lumbar Lateral Disc Herniation
10:09

Transtubular Endoscopic Posterolateral Decompression for L5-S1 Lumbar Lateral Disc Herniation

Published on: October 14, 2022

Area of Science:

  • Orthopaedic Surgery
  • Occupational Health
  • Spinal Disorders

Background:

  • Lumbar Disc Herniation (LDH) is a common and disabling condition.
  • The role of occupational physical demands in LDH development requires further investigation.

Purpose of the Study:

  • To evaluate the association between physical workload and Lumbar Disc Herniation.
  • To identify specific occupational factors contributing to LDH.

Main Methods:

  • Retrospective case-control study involving 200 LDH patients and 200 controls.
  • Analysis included demographic data, work type, physical effort, workload, and working hours.
  • Statistical analysis employed Chi-square tests and Odds Ratios (OR).

Main Results:

  • A significant positive association was found between cumulative physical workload and LDH.
  • High Odds Ratios were observed for physical workload (OR: 3.48) and hard work (OR: 3.14).
  • Heavy load carrying (OR: 3.48) and stress at work (OR: 2.45) also showed increased risk.

Conclusions:

  • Occupational physical workload is a significant risk factor for Lumbar Disc Herniation.
  • Jobs involving heavy physical labor and prolonged hours increase the likelihood of developing LDH.
  • Implementing workplace safety measures and ergonomic considerations is crucial for prevention.