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  • Expandable PEEK interbody spacer failure. Case report.

    Final Number:

    Eduardo Martinez del Campo Oviedo MD; Hector Enrique Soriano-Baron MD; Nicholas Theodore MD, FACS

    Study Design:

    Subject Category:

    Meeting: Congress of Neurological Surgeons 2014 Annual Meeting

    Introduction: Expandable interbody spacers are part of a relatively new surgical devices, we present the second case reported in the literature of an expandable PEEK interbody spacer.

    Methods: 63 year-old male with grade 1 spondylolisthesis at L4-L5 and a large herniated intervertebral disc at the same level causing severe spinal canal stenosis, who underwent decompression with bilateral non-segmental pedicle screw fixation and placement of an expandable PEEK intervertebral device through a TLIF approach

    Results: Postoperative imaging (18 months follow-up) evidenced dislodged screw caps and sheared interbody device, leading to revision surgery with removal of spinal hardware and instrumentation with new screw-rod construct and PEEK / titanium interbody device through the approach previously used. Clinical and neurological status has remained unremarkable to date.

    Conclusions: Cage migration is a potential complication. This is the second case report of expandable cage failure. We believe that hardware fatigue predisposed the sheared dislodgement of the interbody spacer.

    Patient Care: Provide recent outcomes and complications in patients with machined biomechanical expandable interbody devices. Caution must be warranted with new surgical devices and techniques.

    Learning Objectives: The authors present and analyze a case report of a patient with hardware failure of a PEEK expandable cage.


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