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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...
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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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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

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A Mobile Outside-in Technique of Transforaminal Lumbar Endoscopy for Lumbar Disc Herniations
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How Does Resorption Differ Among Single-Level and Multilevel Lumbar Disc Herniations? A Prospective Multi-Imaging and

Alexander L Hornung1,2, Samuel S Rudisill1,2, J Nicolas Barajas1,2

  • 1Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL.

Spine
|February 12, 2024
PubMed
Summary

Spinal disc resorption occurs similarly for single-level and multilevel lumbar disc herniations (LDH). Patients with multilevel LDH often have higher BMI and specific endplate defects, but conservative management is effective for all.

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Area of Science:

  • Spine Surgery
  • Radiology
  • Orthopedics

Background:

  • Lumbar disc herniation (LDH) is a common spinal condition.
  • Spontaneous resorption is a known, yet poorly understood, healing mechanism for LDH.
  • Understanding differences in multilevel LDH is crucial for effective treatment.

Purpose of the Study:

  • To compare patient factors, MRI findings, and resorption outcomes between single-level and multilevel LDH.
  • To characterize spontaneous disc resorption in different LDH presentations.
  • To inform treatment strategies for lumbar disc herniation.

Main Methods:

  • Prospective case series of 90 patients with acute symptomatic LDH (2017-2019).
  • Baseline data included demographics and MRI characteristics.
  • Follow-up MRIs every three months to assess resorption and healing.

Main Results:

  • Multilevel LDH (17/90 patients) was associated with higher BMI and specific endplate defects (L3/L4, L4/L5).
  • No significant differences in resorption rates or time to resolution were observed between single-level and multilevel LDH.
  • MRI phenotypes, apart from endplate defects, were similar between groups.

Conclusions:

  • Spontaneous resorption rates are comparable for single-level and multilevel LDH.
  • Multilevel LDH patients may present with higher BMI and specific endplate defects.
  • Conservative management is effective for both single-level and multilevel LDH.