title: [3-dimensional computed tomography and multiplanar CT-reformations in lumbar spondylodesis].
abstract: Three-dimensional computed tomography (3-D-CT) and multiplanar CT reformations were performed in 42 patients who were clinically suspected of spinal instability following posterior lumbar fusion. Sagittal and coronal CT reformations demonstrated fusion pseudarthrosis more frequently than axial CT or conventional radiography. Three-dimensional CT cuts through the fusion revealed pseudarthrosis in most patients with positive 2-D images. In 5 patients, however, fusion appeared to be artifactually stable or unstable on 3-D cuts contrasting the 2-D images. Three-dimensional surface reconstructions demonstrated the complex anatomy of the fusion and showed superficial breaks. They were helpful in preoperative planning as well as intraoperative localization. 3-D-CT is a clinically useful adjunctive imaging method.
authors.affiliation: Department of Radiology, University of California, San Francisco.
authors.forename: P
authors.initials: P
authors.lastname: Lang
authors.forename: H K
authors.initials: HK
authors.lastname: Genant
authors.forename: P
authors.initials: P
authors.lastname: Steiger
authors.forename: N
authors.initials: N
authors.lastname: Chafetz
authors.forename: J M
authors.initials: JM
authors.lastname: Morris
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging* / Q000209:etiology; D008159:Lumbar Vertebrae / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011542:Pseudarthrosis / Q000000981:diagnostic imaging* / Q000209:etiology; D013123:Spinal Fusion / Q000009:adverse effects*; D014057:Tomography, X-Ray Computed / Q000379:methods*
vernacular_title: Dreidimensionale Computertomographie und multiplanare CT-Reformationen bei lumbalen Spondylodesen.