title: Computer-assisted spinal navigation using a percutaneous dynamic reference frame for posterior fusions of the lumbar spine.
abstract: We report a 6-year retrospective review of screw placement utilizing a percutaneous dynamic reference frame attached to the posterior superior iliac spine performed by a single orthopedic surgeon. We included all lumbar spine procedures utilizing computer-assisted spinal navigation (StealthStation Navigation System, Medtronic Navigation, Louisville, Colo) performed from 2000 to 2005, with 272 of 289 patients (94.1%) having at least a 4-month follow-up with radiographs. Six hundred seventy-two screws were placed. Following surgery, none of these patients had screw misplacements. One patient (0.4%) had a screw backing out of the pedicle. Eighteen patients (6.6%) had their posterior instrumentation removed. Three had repeat operations but did not have their instrumentation removed. No patient with repeat operations had a screw misplaced.
authors.affiliation: University of Utah Health Sciences Center, Salt Lake City, Utah, USA.
authors.forename: Natalie M
authors.initials: NM
authors.lastname: Best
authors.forename: Rick C
authors.initials: RC
authors.lastname: Sasso
authors.forename: Ben J
authors.initials: BJ
authors.lastname: Garrido
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001863:Bone Screws; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D021621:Imaging, Three-Dimensional; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology; D011859:Radiography; D012189:Retrospective Studies; D013123:Spinal Fusion / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D025321:Surgery, Computer-Assisted / Q000379:methods*; D016896:Treatment Outcome; D055815:Young Adult