title: [New horizons for minimally invasive treatment of acromioklavikular joint injuries].
abstract: BACKGROUND
  A novel radiation-free electromagnetic navigation system (ENS) method was developed and the feasibility and accuracy for transklavikular-transkorakoid drilling procedures were evaluated in an experimental setting.
  
  
  METHODS
  In this study ten arthroscopically assisted, electromagnetically navigated transkorakoid-transklavikular drilling procedures with subsequent implantation of two TightRope® (Arthrex, Naples, FL.) devices (anatomical reconstruction) were performed on five human cadavers. Postoperative computed tomography (CT) scan analysis was carried out to determine tunnel placement accuracy. All procedures were performed without fluoroscopy.
  
  
  RESULTS
  The mean overall operation time was 28.5 ± 6.6 min. Successful anatomical tunnel placement was achieved in 98.8 %. During the navigated drilling procedure no misguidance of the drill requiring directional readjustments or restarts occurred. No cortical breaches, fractures or complications occurred.
  
  
  CONCLUSIONS
  The electromagnetically navigated transkorakoid-transklavikular drilling procedure used in this study demonstrated high targeting accuracy, required no intraoperative x-ray radiation and was associated with no complications.
authors.affiliation: Klinik für Unfall-, Hand- und Wiederherstellungschirurgie, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Deutschland, mi.hoffmann@uke.de.
authors.forename: M
authors.initials: M
authors.lastname: Hoffmann
authors.forename: J P
authors.initials: JP
authors.lastname: Petersen
authors.forename: J M
authors.initials: JM
authors.lastname: Rueger
authors.forename: M
authors.initials: M
authors.lastname: Schroeder
mesh_terms: D000173:Acromioclavicular Joint / Q000293:injuries* / Q000601:surgery*; D002102:Cadaver; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation* / Q000379:methods*; D010027:Osteotomy / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D016896:Treatment Outcome