title: [Computer-assisted navigated acetabulum placement in hip prosthesis implantation--application study in routine clinical care].
abstract: OBJECTIVE
  This study serves to examine the feasibility of a CAS system in clinical routine use in the field of total hip replacement.
  
  
  METHODS
  Within a prospective study 70 total hip replacements were performed by one surgeon (KB) between March and November, 1999 using a CAS system for preoperative planning and intraoperative cup placement.
  
  
  RESULTS
  The average operating time was 70 min. This means an average increase in total time of operation about 15-20 min. The average blood loss was 630 ml. No additional specific complications due to the use of the system were seen. There was no additional trauma created by percutaneous pointing at the spina or flxing a dynamic reference base (DRB) at the pelvis.
  
  
  CONCLUSIONS
  The active application of this CAS system in clinical routine use showed very good results in feasibility and can be considered as reliable. The navigated cup placement shows the potential of improving the results in cup placement, thus improving the outcome of hip arthroplasty.
authors.affiliation: Orthopädische Universitätsklinik im St. Josef-Hospital, Bochum. Kai.Bernsmann@ruhr-uni-bochum.de
authors.forename: K
authors.initials: K
authors.lastname: Bernsmann
authors.forename: U
authors.initials: U
authors.lastname: Langlotz
authors.forename: B
authors.initials: B
authors.lastname: Ansari
authors.forename: M
authors.initials: M
authors.lastname: Wiese
mesh_terms: D000077:Acetabulum / Q000601:surgery*; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D010043:Outcome and Process Assessment, Health Care; D012371:Robotics / Q000295:instrumentation*; D012984:Software; D013673:Technology Assessment, Biomedical
vernacular_title: Computerassistiert navigierte Pfannenplatzierung in der Hüftendoprothetik--Anwendungsstudie im klinischen Routinealltag.