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Herniated Intervertebral Disc l: Introduction

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: Pathophysiology

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: Introduction

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...

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Updated: Jun 12, 2026

Full-Endoscopic Isolation Zone Technique for the Treatment of Lumbar Disc Herniation

Full-Endoscopic Isolation Zone Technique for the Treatment of Lumbar Disc Herniation

Published on: April 7, 2023

Recurrent lumbar disk herniation.

Joseph K Lee¹, Louis Amorosa, Samuel K Cho

¹Department of Orthopaedic Durgery, New York-Presbyterian Hospital, Columbia University Medical Center, New York, NY, USA.

The Journal of the American Academy of Orthopaedic Surgeons

|June 1, 2010

Summary

This summary is machine-generated.

Recurrent lumbar disk herniation, a common complication after surgery, causes pain returning after six months. Differentiating it from scar tissue is key for effective treatment, which includes medical management or surgery.

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Last Updated: Jun 12, 2026

Full-Endoscopic Isolation Zone Technique for the Treatment of Lumbar Disc Herniation

Full-Endoscopic Isolation Zone Technique for the Treatment of Lumbar Disc Herniation

Published on: April 7, 2023

Area of Science:

Neurosurgery
Orthopedic Surgery
Spinal Surgery

Background:

Recurrent lumbar disk herniation is the most frequent complication after primary open diskectomy.
It is characterized by the return of back and/or leg pain after a minimum 6-month pain-free interval post-surgery.

Purpose of the Study:

To summarize the definition, diagnosis, and treatment of recurrent lumbar disk herniation.
To highlight the importance of distinguishing recurrent herniation from postoperative epidural scar.

Main Methods:

Review of clinical presentation and diagnostic criteria for recurrent lumbar disk herniation.
Discussion of differential diagnosis, including postoperative epidural scar.
Overview of treatment options: medical management and surgical interventions.

Main Results:

Neurologic examination and laboratory tests are crucial for diagnosis, with imaging confirming herniation at the operated level.
Accurate differentiation from epidural scar is vital as scar tissue may not warrant reoperation.
Surgical options range from conventional and minimally invasive diskectomy to fusion for instability or stenosis.

Conclusions:

Recurrent lumbar disk herniation requires careful evaluation to distinguish it from other postoperative complications.
Treatment strategies should be tailored based on accurate diagnosis, with surgical intervention including fusion reserved for specific indications like instability.