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Machined cervical interfacet allograft spacers for the administration of atlantoaxial instability.

Machined cervical interfacet allograft spacers for the administration of atlantoaxial instability.

J Craniovertebr Junction Backbone. 2017 Oct-Dec;eight(four):332-337

Authors: Turel MK, Kerolus MG, Traynelis VC

Background: The usage of cervical interfacet spacers (CISs) to enhance stability and supply stable arthrodesis on the atlantoaxial joint has not been studied intimately. The goal of this work is to report the outcomes with the usage of machined allograft CISs at C1-2.
Strategies: A retrospective evaluation of 19 sufferers who underwent an atlantoaxial fusion with the usage of CISs was carried out. All sufferers had instability documented with flexion and extension lateral radiographs. This instability was as a result of trauma, degenerative stenosis, symptomatic C1-2 arthropathy, and os odontoideum. Scientific and radiological outcomes had been assessed. Fusion was decided based mostly on a scarcity of failure, absence of movement on flexion and extension plain X-ray movies, and presence of bridging trabecular bone which was most frequently demonstrated by a computed tomography.
Outcomes: The imply age was 69.1 ± 12.9 years. Eight sufferers had traumatic fractures, six sufferers had degenerative stenosis, two sufferers had C2 neuralgia as a result of C1-2 arthropathy, two sufferers had C1-2 ligamentous subluxation, and one affected person had an unstable os odontoideum. The occiput or subaxial backbone was included within the arthrodesis in 10 sufferers. Rib autograft was utilized in most sufferers. No affected person had postoperative neurological worsening, malposition of , or vertebral artery harm and there have been no mortalities. The fusion price was 95%. The imply follow-up was 12.1 ± 5.5 months.
Conclusions: CIS is a promising adjuvant for the therapy of atlantoaxial instability.

PMID: 29403245 [PubMed]

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