The accuracy of 3D fluoroscopy-navigated screw insertion in the upper and subaxial cervical spine

Autor: Jan Bredow, B. Kraus, P. Schiller, Peer Eysel, T. Koy, Johannes Oppermann, Rolf Sobottke, G. Schiffer
Rok vydání: 2014
Předmět:
Zdroj: European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society. 24(12)
ISSN: 1432-0932
Popis: Due to better primary stability and repositioning options, pedicle screws are increasingly used during posterior stabilization of the cervical spine. However, the serious risks generally associated with the insertion of screws in the cervical spine remain. The purpose of this study is to examine the accuracy of pedicle screw insertion with the use of 3D fluoroscopy navigation systems, also accounting for various spine levels. Data of 64 patients were collected during and after screw implantation (axial and subaxial) in the cervical spine. 207 screws were implanted from C1 to C7 and analyzed for placement accuracy according to postoperative CT scans and following the modified Gertzbein and Robbins classification. The accuracy of most of the inserted screws was assessed as grade 2 according to the modified Gertzbein and Robbins classification. 93.9 % of the screws implanted at C1 or C2, and 78.51 % of the screws implanted at levels C3–C7 showed placement accuracy grade 2 or better, indicating pedicle wall perforation of
Databáze: OpenAIRE