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Updated: Feb 15, 2026

A Spine Robotic-Assisted Navigation System for Pedicle Screw Placement
Published on: May 11, 2020
Iatrogenic peritonitis following an incident during ablation of a pedicle screw
P Cottin1, N Mebtouche1, G Pourcher2
1Service d'orthopédie, traumatologie et chirurgie reconstructrice, hôpital Antoine-Béclère, Assistance publique-Hôpitaux de Paris, 157, rue de la Porte-de-Trivaux, 92140 Clamart, France.
Abstract:
Immediate complications can arise due to faulty implantation of material during fusion procedures, but none have been reported in connection with ablation of material in the spine. We report a case of intraperitoneal migration of a pedicle screw during attempted removal. It crossed the psoas muscle and perforated a small-intestine loop, triggering hemorrhagic shock and peritonitis by perforation. We analyze the causes and mechanisms underlying this exceptional case of migration, with a view to sharing preventive measures. Initial extra-pedicular screw positioning and the pressure exerted to remove it were responsible for this serious incident.
Insights
A migrated pedicle screw during spine surgery removal caused internal injuries. This rare complication highlights the need for careful technique to prevent serious patient harm.
Area of Science:
- Spinal surgery
- Surgical complications
- Medical device migration
Background:
- Spinal fusion and ablation procedures carry risks.
- Complications from material implantation are known.
- Spinal material ablation complications are undocumented.
Observation:
- A case of intraperitoneal pedicle screw migration during attempted removal is presented.
- The screw migrated through the psoas muscle.
- The screw perforated a loop of the small intestine.
Findings:
- The migration led to hemorrhagic shock and peritonitis.
- Initial extra-pedicular screw placement was a contributing factor.
- Excessive force during removal exacerbated the incident.
Implications:
- This case underscores the potential for severe complications during spinal device removal.
- Preventive measures focusing on accurate screw placement and careful removal techniques are crucial.
- Understanding migration mechanisms can improve patient safety in spinal procedures.
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