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Related Experiment Video

Updated: Oct 8, 2025

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

Cortical Bone Trajectory-Based Dynamic Stabilization.

Yi-Hsuan Kuo¹, Chao-Hung Kuo², Hsuan-Kan Chang³

¹Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Institute of Biomedical Informatics, National Yang Ming Chiao Tung University, Taipei, Taiwan.

World Neurosurgery

|December 26, 2021

Summary

This summary is machine-generated.

Cortical bone trajectory (CBT)-based dynamic stabilization (CBT-DDS) shows outcomes comparable to minimally invasive transforaminal lumbar interbody fusion (MI-TLIF). This CBT-DDS approach offers a viable alternative with shorter operation times and similar segmental motion preservation.

Keywords:

Cortical bone trajectory Dynamic stabilization Minimally invasive surgery Transforaminal lumbar interbody fusion

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Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects

Creating Rigidly Stabilized Fractures for Assessing Intramembranous Ossification, Distraction Osteogenesis, or Healing of Critical Sized Defects

Published on: April 11, 2012

Area of Science:

Spine surgery
Orthopedic biomechanics
Minimally invasive spinal procedures

Background:

Cortical bone trajectory (CBT) screws offer biomechanical strength comparable to conventional pedicle screws for lumbar fusion.
Limited research exists on the efficacy of CBT screws in dynamic stabilization systems.
This study compares CBT-based Dynesys dynamic stabilization (CBT-DDS) with standard minimally invasive transforaminal lumbar interbody fusion (MI-TLIF).

Purpose of the Study:

To compare the clinical and radiological outcomes of CBT-DDS versus MI-TLIF for lumbar fusion.
To evaluate the viability of CBT screws within a dynamic stabilization construct.
To assess patient-reported pain and functional outcomes.

Main Methods:

Retrospective review of consecutive patients undergoing CBT-DDS or MI-TLIF at L4-L5 or L3-L5 levels.
Comparison of pre- and postoperative radiological evaluations.
Assessment of visual analog scale (VAS) pain scores, Japanese Orthopaedic Association (JOA) scores, and Oswestry Disability Index (ODI).

Main Results:

Sixty patients were analyzed (20 CBT-DDS, 40 MI-TLIF).
MI-TLIF had a significantly longer operation time (P=0.010) but similar blood loss (P=0.484).
Perioperative complications and postoperative range of motion reduction were similar between groups; no pseudarthrosis occurred in the MI-TLIF group.

Conclusions:

CBT-DDS demonstrates similar clinical and radiological outcomes to MI-TLIF for L4-L5 or L3-L5 spondylosis/spondylolisthesis.
CBT-DDS is a viable and effective alternative to MI-TLIF.
CBT-DDS offers a shorter operation time with comparable segmental motion preservation.