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Related Experiment Video

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Pedicle Screw Placement Using an Augmented Reality Head-Mounted Display in a Porcine Model
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Anatomic techniques for cervical pedicle screw placement.

Kimberly-Anne Tan1, Shuxun Lin1, Brian Zhaojie Chin1

  • 1University Orthopaedics, Hand and Reconstructive Microsurgery Cluster (UOHC), National University Health System, Singapore, Singapore.

Journal of Spine Surgery (Hong Kong)
|April 21, 2020
PubMed
Summary

Mastering freehand cervical pedicle screw (CPS) insertion is crucial for optimal outcomes in spinal surgery. This technique, while challenging, enhances fixation and allows advanced technologies to improve patient results.

Keywords:
Cervical spineinsertionpedicle screwtechnique

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Area of Science:

  • Neurosurgery
  • Orthopedic Surgery
  • Spinal Instrumentation

Background:

  • Cervical pedicle screws (CPS) offer superior fixation compared to lateral mass screws for various spinal pathologies.
  • Technological advancements enhance CPS accuracy, but freehand technique mastery is key to realizing their full potential.

Purpose of the Study:

  • To review current literature on freehand cervical pedicle screw insertion techniques.
  • To share clinical experience regarding freehand CPS insertion.

Main Methods:

  • Comprehensive literature search of PubMed, Medline, and EMBASE databases.
  • Inclusion of full-text clinical studies describing freehand techniques; exclusion of cadaveric, drill jig, navigation, or robotic studies.
  • Review of 13 primary references encompassing 1,480 patients.

Main Results:

  • Common entry points identified: cranial margin of lamina for C2, lateral to center of articular mass for C3-7.
  • Diverse instruments used for trajectory guidance, including probes and burrs.
  • Preoperative planning and intraoperative checks for pedicle integrity are vital; malpositions may require repositioning or conversion.

Conclusions:

  • Successful freehand CPS insertion relies on meticulous preoperative planning for screw entry point and trajectory.
  • Advanced technologies should complement, not replace, expertise in freehand CPS insertion for improved patient outcomes.