Are pedicle screw perforation rates influenced by registered or unregistered vertebrae in multilevel registration using a CT-based navigation system in the setting of scoliosis?

摘要

We developed a new multilevel registration technique for pedicle screw (PS) insertion that has the capability of registering three consecutive vertebrae simultaneously, using a reference frame set to one of the caudal vertebrae. PSs are inserted in the consecutive and adjacent one or two vertebrae. This study aimed to investigate the perforation rates of the registered and unregistered adjacent vertebrae and compare the perforation rate of the PS and insertion time per PS between the conventional and new techniques.