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.

Kumar, Rakesh; Nguyen, Kenneth T; Yamanouchi, Kento; Nemani, Venu M; Leveque, Jean-Christophe; Louie, Philip K; Sethi, Rajiv K · Acta Neurochir (Wien) · 2026

case_report · Level V

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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.

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