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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...

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Related Experiment Video

Updated: May 16, 2026

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device
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Published on: November 8, 2024

[Device implanted complications of Coflex interspinous dynamic stabilization].

Lei Zang1, Yong Hai, Qing-jun Su

  • 1Department of Orthopaedics, Beijing Chaoyang Hospital, Beijing, China.

Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery]
|November 20, 2012
PubMed
Summary

Complications from the Coflex interspinous dynamic stabilization system can occur, including spinous process fractures and device malposition. Conservative treatment or revision surgery with pedicle screws are effective strategies for managing these issues.

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Area of Science:

  • Spine surgery
  • Orthopedic implants
  • Degenerative spinal disorders

Context:

  • Degenerative lumbar spine diseases pose significant challenges.
  • Dynamic stabilization systems offer alternatives to traditional fusion.
  • The Coflex device is used for interspinous dynamic stabilization.

Purpose:

  • To investigate intraoperative and postoperative complications of the Coflex system.
  • To analyze therapeutic strategies for Coflex-related complications.
  • To evaluate patient outcomes following treatment for complications.

Summary:

  • A retrospective review of 133 patients undergoing Coflex implantation identified 13 cases with complications.
  • Complications included spinous process fractures, spondylolysis, instability, and malposition.
  • Treatment strategies varied, including revision with pedicle screws or conservative management, leading to improved pain and function scores.

Impact:

  • Identifies specific patient profiles contraindicating Coflex use (osteoporosis, narrow interspinous space, instability).
  • Provides evidence-based recommendations for managing Coflex complications.
  • Highlights the efficacy of pedicle screw fixation as a salvage procedure.