Development of a Patient-specific Guide for High Cervical Spine Fixation

• Autor(a) principal: Nanni,Felipe de Negreiros
• Data de Publicação: 2019
• Outros Autores: Vialle,Emiliano Neves, Foggiattob,José Aguiomar, Silva,Kayo Winiccius Samuel Neves e, Mello Neto,Heraldo de Oliveira
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Brasileira de Ortopedia (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162019000100020
• topic: cervical vertebrae/ pathology; cervical vertebrae/ surgery; spinal fractures; spinal fusion; three-dimensional printing

Abstract Objective High cervical spine fixation represents a challenge for spine surgeons due to the complex anatomy and the risks of vascular and medullar injury. The recent advances in 3-D printing have unfolded a whole new range of options for these surgeons. Methods In the present study, a guide for the placement of the lateral mass screw in the C1 vertebra was developed using 3-D printing. Eight real-size models of the high cervical spine and their respective screw guides were built using computed tomography (CT) scan images. The guidewires were inserted with the help of the printed guides and then the models were analyzed with the help of CT scan images. Results All of the guidewires in the present study obtained a safe placement in the models, avoiding the superior and inferior articular surfaces, the vertebral foramen, and the vertebral artery. Conclusion The present study demonstrated the efficiency of the guide, a reliable tool for aiding the insertion of guidewires for screws in lateral masses of the C1.