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Mini Screws for Improving Accuracy in Navigation-assisted Spine Surgery.

Sebastian A Ahmadi1, Amin Hashemi2, Jürgen Harms2

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This new surgical technique enhances navigation-assisted spine surgery by using mini screws for accurate referencing. It simplifies initial setup and allows for easy re-referencing, improving accuracy and efficiency during complex procedures.

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Area of Science:

  • Neurosurgery
  • Orthopedic Surgery
  • Spine Surgery

Background:

  • Navigation-assisted spine surgery is standard for complex interventions.
  • Achieving high accuracy and managing reference array disruptions remain challenges.

Purpose of the Study:

  • To present a technique for improving initial and re-referencing accuracy in navigation-assisted spine surgery.
  • To offer an easy-to-implement solution for multilevel instrumentation or reference array dislocation.

Main Methods:

  • A surgical technique using intraoperative videos, photographs, and imaging data is presented.
  • Mini screws are inserted as landmarks for initial referencing before attaching the reference array.
  • Intraoperative navigation scans are used for referencing with mini screws.

Main Results:

  • The technique achieves mean accuracies of 1 mm or lower.
  • Referencing is easily verifiable and repeatable.
  • Allows for hassle-free re-referencing without additional scans.

Conclusions:

  • The presented technique enables rapid and highly accurate initial referencing.
  • It is applicable to all navigation-assisted spine surgeries.
  • Facilitates easy re-referencing following reference array disruption or removal.