title: Postoperative evaluation of transpedicular screws with computed tomography.
abstract: The accuracy of screw placement was assessed with postoperative computed tomography (CT) scans in 75 consecutive patients treated with transpedicular screw fixation. The pedicular screws (n = 379) were inserted at levels ranging from thoracal (T-8) to sacral (S-2) vertebrae using different systems. Most of the screws (90%) were correctly placed in the pedicle. Ten screws (3%) were inserted medially into the spinal canal. Only 1 screw caused root compression symptoms. Screw misplacement lateral to the pedicle occurred in 18 cases (5%), 9 screws (2%) were inserted superior to the pedicle. No important complications developed that were related to the misplaced screws.
authors.affiliation: Marmara University Faculty of Medicine, Department of Orthopaedics and Traumatology, Istanbul, Turkey.
authors.forename: O
authors.initials: O
authors.lastname: Güven
authors.forename: S
authors.initials: S
authors.lastname: Yalçin
authors.forename: M
authors.initials: M
authors.lastname: Karahan
authors.forename: T T
authors.initials: TT
authors.lastname: Sevinç
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001863:Bone Screws; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery; D008875:Middle Aged; D009985:Orthopedics / Q000379:methods*; D012447:Sacrum / Q000000981:diagnostic imaging / Q000601:surgery; D013122:Spinal Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000601:surgery*; D013904:Thoracic Vertebrae / Q000000981:diagnostic imaging / Q000601:surgery; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome