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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 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...
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...
Local Anesthetics: Clinical Application as Spinal Anesthesia01:11

Local Anesthetics: Clinical Application as Spinal Anesthesia

Spinal anesthetics are given during lower abdomen and limb surgeries to block sensory and motor neurons. They are administered in the mid to low lumbar regions, primarily acting on the cauda equina's nerve roots. The blockade level depends on the local anesthetic (LA) concentration. Usually, low LA concentrations are sufficient to block sensory fibers, while only high LA concentrations block motor fibers. Other factors like injection volume and speed, the patient's posture, and the drug...

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Related Experiment Video

Updated: May 23, 2026

Percutaneous Endoscopic Unilateral-Approach Bilateral Decompression for Lumbar Spinal Stenosis
05:17

Percutaneous Endoscopic Unilateral-Approach Bilateral Decompression for Lumbar Spinal Stenosis

Published on: February 9, 2024

[Spinal lumbar stenosis: an update].

Marcelo Molina1, Pablo Wagner, Mauricio Campos

  • 1Escuela de Medicina, Departamento de Ortopedia y Traumatología, Pontificia Universidad Católica de Chile, Chile. mmolinas@med.puc.cl

Revista Medica De Chile
|March 27, 2012
PubMed
Summary
This summary is machine-generated.

Spinal lumbar stenosis, a narrowing of the spinal canal, commonly affects individuals aged 50-70. Treatment ranges from conservative measures like physical therapy to surgical decompression, with infiltrations predicting surgical success.

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Full-Endoscopic Interlaminar Approach for Decompression of Lateral Recess Stenosis
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Published on: February 24, 2023

Related Experiment Videos

Last Updated: May 23, 2026

Percutaneous Endoscopic Unilateral-Approach Bilateral Decompression for Lumbar Spinal Stenosis
05:17

Percutaneous Endoscopic Unilateral-Approach Bilateral Decompression for Lumbar Spinal Stenosis

Published on: February 9, 2024

Full-Endoscopic Interlaminar Approach for Decompression of Lateral Recess Stenosis
02:02

Full-Endoscopic Interlaminar Approach for Decompression of Lateral Recess Stenosis

Published on: February 24, 2023

Area of Science:

  • Neurology
  • Orthopedics
  • Radiology

Context:

  • Spinal lumbar stenosis (SLS) is a prevalent condition, primarily affecting individuals in their 5th to 7th decades of life.
  • It can be congenital or acquired, with degenerative causes being the most frequent.
  • SLS involves narrowing of the spinal canal due to factors like disc bulging, ligament hypertrophy, and osteophytes.

Purpose:

  • To review the pathophysiology, clinical presentation, diagnostic modalities, and management strategies for spinal lumbar stenosis.
  • To highlight the role of imaging, particularly magnetic resonance imaging (MRI), in diagnosis.
  • To discuss the efficacy of conservative and surgical treatment options.

Summary:

  • The hallmark symptom of SLS is sciatic pain, exacerbated by ambulation and relieved by lumbar flexion.
  • Conservative management includes NSAIDs, physical therapy, and epidural/radicular infiltrations, which can predict surgical outcomes.
  • Surgical options involve decompression, potentially with lumbar fusion (arthrodesis) for specific indications like instability or deformity.

Impact:

  • Provides a comprehensive overview of spinal lumbar stenosis for clinicians and researchers.
  • Emphasizes the diagnostic utility of MRI and the prognostic value of conservative treatment outcomes.
  • Guides therapeutic decision-making, from conservative interventions to surgical considerations including spinal fusion.