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Related Experiment Videos

Thoracic pedicle: surgical anatomic evaluation and relations.

H C Ugur1, A Attar, A Uz

  • 1Department of Neurosurgery, The University of Ankara, Faculty of Medicine, Turkey.

Journal of Spinal Disorders
|March 10, 2001
PubMed
Summary

This study examined thoracic pedicle anatomy for safe transpedicular screw fixation. Understanding these anatomical variations is crucial for avoiding surgical complications.

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Area of Science:

  • Anatomy
  • Orthopedic Surgery
  • Neurosurgery

Background:

  • Transpedicular screw fixation is a common spinal procedure.
  • Complications can arise from inaccurate screw placement due to anatomical variations.

Purpose of the Study:

  • To investigate the detailed anatomy of the thoracic pedicle.
  • To provide data for safe transpedicular screw fixation and complication avoidance.

Main Methods:

  • Anatomic study of 20 cadavers.
  • Exposure and measurement of thoracic pedicle dimensions, nerve root distances, and dural sac proximity.
  • Analysis of root exit angles and nerve root diameters.

Main Results:

  • Significant variations in pedicle width, height, and interpedicular distance were observed.

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  • Proximity to the dural sac and nerve roots varied, with some specimens showing no distance.
  • Nerve root diameter and root exit angles showed consistent changes across thoracic levels.

    • Conclusions:

    • Careful screw placement in the horizontal plane is recommended.
    • Consideration of individual anatomic variations is essential to prevent medial pedicle screw misplacement.
    • Preoperative computed tomography evaluation is vital for thoracic transpedicular fixation due to significant pedicle size variations.