Cortical bone trajectory fixation cause low compression force in anterior vertebral column.

ABSTRACT:

Background

The cortical bone trajectory (CBT) screws follow a caudocephalad and lateral path from the pedicle to the vertebral body. The bone fusion rate of CBT fixation is equal to or lower than conventional pedicle screw fixation. It remains unclear whether or not CVT screws exert equally compressive forces across the vertebral column. In this study, we intraoperatively examined the insertional torque of CBT screws, and investigated the compression loading and pressure distribution in conventional and CBT fixation using pig bones.

Methods

The insertional torque was measured for a total of 115 CBT screws. Detailed positions of these screws were retrospectively confirmed using CT scans. Screw loosening and interbody fusion were examined 1 year after surgery. In the experimen

SUBMITTER: Fujiwara S 

PROVIDER: S-EPMC9005947 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature