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Articulations of the Vertebral Column01:28

Articulations of the Vertebral Column

In addition to being held together by the intervertebral discs, adjacent vertebrae also articulate with each other at synovial joints formed between the superior and inferior articular processes called zygapophysial joints (facet joints). These are plane joints that provide for only limited motions between the vertebrae. The orientation of the articular processes at these joints varies in different regions of the vertebral column and serves to determine the types of motions available in each...
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Spinal cord injury progresses through two interconnected phases: primary injury and secondary injury.Primary InjuryPrimary injury happens at the moment of trauma and involves immediate mechanical damage to the spinal cord.Compression happens when broken vertebrae, herniated discs, or accumulating blood (such as a hematoma) press directly against the spinal cord, distorting its normal shape and function. In cases of contusion, the cord is bruised by a blunt force (like penetrating injuries or...
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Related Experiment Video

Updated: Jun 27, 2026

Clinical Application of Microscope-Assisted Minimally Invasive Anterior Lumbar Interbody Fusion
04:42

Clinical Application of Microscope-Assisted Minimally Invasive Anterior Lumbar Interbody Fusion

Published on: June 16, 2023

510

Risk Factors for Sacroiliac Joint Fusion after Instrumented Spinal Fusion.

Peter Z Du1, Gurmit Singh1, Spencer Smith1

  • 1Department of Orthopaedics & Rehabilitation, Oregon Health and Science University, Portland, OR, USA.

Global Spine Journal
|September 16, 2024
PubMed
Summary
This summary is machine-generated.

Prior sacroiliac (SI) joint injection is the strongest predictor of needing SI joint fusion after spinal surgery. Longer spinal fusion constructs also increase the risk of subsequent SI joint fusion.

Keywords:
PearlDiverinstrumented spinal fusionsacroiliac joint fusion

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Area of Science:

  • Spine surgery
  • Orthopedics
  • Biomechanical research

Background:

  • Sacroiliac (SI) joint fusion is a known complication following instrumented spinal fusion.
  • Identifying risk factors for SI joint fusion is crucial for patient management and surgical planning.

Purpose of the Study:

  • To identify patient-specific and surgical factors associated with the incidence of SI joint fusion after instrumented spinal fusion.

Main Methods:

  • Retrospective cohort study utilizing the PearlDiver BiscayneBay database.
  • Analysis of 549,625 patients undergoing posterior spinal fusions, comparing those with and without subsequent SI joint fusion.
  • Univariate and multivariate logistic regression to assess risk factors.

Main Results:

  • 1.1% of patients (6068/549,625) underwent subsequent SI joint fusion.
  • Significant risk factors included female gender, obesity, fibromyalgia, diabetes, tobacco use, longer construct length, and prior SI joint injection.
  • Prior SI joint injection (OR: 8.70) and longer spinal fusion constructs (7+ segments OR: 2.17; 3-6 segments OR: 1.49) were the strongest predictors.

Conclusions:

  • Prior SI joint injection is the most significant predictor for requiring subsequent SI joint fusion.
  • Increased spinal fusion construct length is also associated with a higher risk of SI joint fusion.