# Augmented-reality-assisted minimally invasive quad-rod spinopelvic fixation for spinopelvic dissociation caused by pathological fracture due to extramedullary plasmacytoma: an evaluation of technique and its benefits

## TL;DR

This paper presents a case where augmented reality was used to assist in a complex spinal surgery, showing it can help with accurate and efficient placement of surgical hardware.

## Contribution

The first reported use of AR for a dual-iliac quad-rod construct in spinopelvic dissociation.

## Key findings

- AR-assisted minimally invasive placement of L4–L5 pedicle and bilateral iliac screws was completed without complications.
- Stable fixation was maintained at the last follow-up, suggesting AR's potential in complex spinopelvic procedures.

## Abstract

Augmented reality (AR) provides real-time three-dimensional visualization for spinal instrumentation, though its role in spinopelvic stabilization remains limited. While AR-assisted pedicle and S2 alar-iliac screw placement has been reported, AR guidance for a dual-iliac quad-rod construct in spinopelvic dissociation has not. We describe AR-assisted minimally invasive placement of L4–L5 pedicle screws and bilateral iliac screws using intraoperative three-dimensional planning. Fixation was completed without complications and remained stable at last follow-up. This case suggests AR navigation may support accurate and efficient execution of complex minimally invasive spinopelvic fixation.