title: [Navigated reposition of transverse acetabulum fractures. A precision analysis].
abstract: Up to now navigated reduction control based on computed tomography (CT) image data could not be used commercially. With newly developed software, a transverse fracture of the acetabulum was reduced with navigation control in a laboratory test. The results were compared to visual and tactile control in a foam pelvis and specimen. Measurements were done with another magnet-based navigation system. The residual dislocation was measured with translation (mm) and rotation (degrees). Compared with visually controlled reduction, navigated reduction led to a residual dislocation of 0.7 mm and 0.9 degrees. Navigated reduction based on CT image data is also accurate for reduction of joint fractures under laboratory conditions. Further improvements of the software are planned for later in vivo use.
authors.affiliation: Unfallchirurgische Klinik, Medizinische Hochschule, Hannover. huefner.tobias@mh-hannover.de
authors.forename: T
authors.initials: T
authors.lastname: Hüfner
authors.forename: M
authors.initials: M
authors.lastname: Citak
authors.forename: S
authors.initials: S
authors.lastname: Tarte
authors.forename: A
authors.initials: A
authors.lastname: Gänsslen
authors.forename: T
authors.initials: T
authors.lastname: Pohlemann
authors.forename: J
authors.initials: J
authors.lastname: Geerling
authors.forename: C
authors.initials: C
authors.lastname: Krettek
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000293:injuries* / Q000601:surgery*; D003198:Computer Simulation; D004867:Equipment Design; D005593:Fracture Fixation, Internal / Q000295:instrumentation*; D050723:Fractures, Bone / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D021621:Imaging, Three-Dimensional / Q000295:instrumentation*; D008280:Magnetics / Q000295:instrumentation; D008432:Mathematical Computing; D008953:Models, Anatomic; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D012985:Software Design; D025321:Surgery, Computer-Assisted / Q000295:instrumentation*; D013673:Technology Assessment, Biomedical / Q000706:statistics & numerical data; D036542:Tomography, Spiral Computed / Q000295:instrumentation*; D014584:User-Computer Interface