Infinity: A Prospective Trial for Safety and Accuracy of… : Spine
on has been widely studied and implemented in the thoracic and lumbar spine. However less literature exists regarding the use of computer-assisted navigation for posterior cervical instrumentation, particularly with lateral mass fixation. Here we present the first prospective study of navigated cervical lateral mass screw placement for cervicothoracic fusion. Methods. Patients who met indications for posterior cervical fusion were screened, consented, and enrolled preoperatively for instrumentation with medtronic infinity occipital-cervical-thoracic implants, with use of intraoperative O-arm and stereotactic Stealth navigation. Postoperative CTs of the instrumented levels were obtained during the same hospital admission. Primary outcome of the trial was safety. Secondary outcomes were screw accuracy assessed by Gertzbein-Robbins grade, neurologic exams, and patient reported outcomes on the PROMIS 29 questionnaire. Results. A total of 50 patients underwent surgery, and 557 screws were p
