title: [Disc replacement with the SB Charité endoposthesis - experience, preliminary results and comments after 35 prospectively performed operations].
abstract: Aim of this prospective study was an investigation concerning the indication for the implantation of an artificial disc endoprosthesis and the rating of this operation.
  
  
  METHODS
  35 patients with 11 bi- and 24 monosegmental implanted disc endoprosthesis were observed over an average follow-up of 14.7 months. Indications for the operation were: unsuccessful, orthopedic conservative treatment > 6 months, segmental pain, age < 45 years, evidence of a radiologic (MRI) demonstrable mono- or bisegmental disc degeneration with or without disc prolabation, exclusion of psychogenic disease and positive preoperative, diagnostic measures.
  
  
  RESULTS
  The average stay in the hospital was 16.8 days (preoperative: 4.3 days), the average operation time 85.5 minutes, the average blood loss was 125 ccm. 23 patients were operated in L 5 / S 1, 20 in L 4 / 5 and 2 in L 3 / 4. NSAR was given in 33 patients preoperatively, opiates in 2 further patients, postoperatively NSAR was necessary in 5 patients, opiates in 2 patients. The preoperative angle of lordosis (L 1 - S 1, n = 25) was changed from 35.6 degrees to 42.6 degrees (20,2 %), the segmental angle from 19 degrees to 30 degrees (57.5 %).
  
  
  CONCLUSIONS
  The implantation of the artificial disc was followed by a good pain relief in patients suffering from a mono- or bisegmental disc degeneration. In patients with a facett joint arthrosis and elderly patients > 45 years this method cannot be used, the indication in patients with failed back surgery syndrome cannot be estimated yet. Improvements of the instrumentation and the discussion in the case of revisional operations are mandatory.
authors.affiliation: Abt. für Wirbelsäulenchirurgie, Kinder- und onkologische Orthopädie, Lubinus Klinik Kiel, Germany. C.Hopf@lubinus-clinicum.de
authors.forename: C
authors.initials: C
authors.lastname: Hopf
authors.forename: H
authors.initials: H
authors.lastname: Heeckt
authors.forename: C
authors.initials: C
authors.lastname: Beske
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D007403:Intervertebral Disc / Q000473:pathology / Q000601:surgery*; D007405:Intervertebral Disc Displacement / Q000175:diagnosis / Q000601:surgery; D008159:Lumbar Vertebrae / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis / Q000601:surgery; D011474:Prosthesis Design; D019919:Prosthesis Implantation; D012086:Reoperation; D013122:Spinal Diseases / Q000175:diagnosis / Q000601:surgery*; D013167:Spondylitis, Ankylosing / Q000175:diagnosis / Q000601:surgery