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European Spine Journal

Erschienen in:

01.02.2012 | Original Article

Mechanical implant failure in posterior cervical spine fusion

verfasst von: Takeshi Okamoto, Masashi Neo, Shunsuke Fujibayashi, Hiromu Ito, Mitsuru Takemoto, Takashi Nakamura

Erschienen in: European Spine Journal | Ausgabe 2/2012

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Abstract

Purpose

The aim of this study was to determine whether the recent refinement and downsizing of the implants for posterior cervical fusion increase the occurrence of implant failure.

Methods

One hundred forty-two consecutive cases of cervical fusion, using either cannulated Magerl screws or a multiaxial pedicle screw–rod system, were reviewed retrospectively after an average follow-up period of more than 3 years, and the rate and characteristics of the failure of these implants were evaluated.

Results

Implant failure occurred in six (4.2%) patients: five with rheumatoid arthritis and one with athetoid cerebral palsy. Occipital plate fracture occurred in two patients, Magerl screw breakage in one patient, cervical pedicle screw fracture in two patients, and disassembly of the pedicle screw and rod in two patients (one with an occipital plate fracture). There was no rod fracture. The implant failures were asymptomatic, except in one patient. Disassembly of the pedicle screw and rod was observed immediately after another surgical procedure under general anesthesia in two patients.

Conclusions

The failure rate of 4.2% was similar to the rates reported in the literature for posterior lumbar spinal fusion, confirming the reliability of the recent cervical screw–rod system.

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Titel: Mechanical implant failure in posterior cervical spine fusion
verfasst von: Takeshi Okamoto
Masashi Neo
Shunsuke Fujibayashi
Hiromu Ito
Mitsuru Takemoto
Takashi Nakamura
Publikationsdatum: 01.02.2012
Verlag: Springer-Verlag
Erschienen in: European Spine Journal / Ausgabe 2/2012
Print ISSN: 0940-6719
Elektronische ISSN: 1432-0932
DOI: https://doi.org/10.1007/s00586-011-2043-8

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