title: Cemented and cementless total hip replacement. Critical analysis and comparison of clinical and radiological results of 182 cases operated in Al Razi Hospital, Kuwait.
abstract: OBJECTIVE
  In this study we present the results of a series of cemented Exeter and cementless Zweymuller implants.
  
  
  METHODS
  Eighty-seven cemented and 95 cementless hip replacements for different hip pathologies were followed for an average period of 36 months for cementless and 60 months for cemented cases. Clinical results were calculated using the Merle d'Aubigne score. The orientation of the prosthetic components and the fixation of the cup and stem were analyzed. The clinical and radiological results were compared using statistical methods.
  
  
  RESULTS
  In the average period of 36 months in cementless and 60 months in cemented hip replacements the clinical results improved significantly when compared with the preoperative score (p < 0.05). Sixty-seven cemented acetabular cups (77.1%) were in the desired position (30-50 degrees ) and 20 cemented cups (22.9%) were outside this range. Seventy-six cups (80%) were in the desired degree of abduction and 19 (20%) were outside this range. All cups except 1 were anteverted or neutral. Of the femoral stems, 173 were in the neutral position, 5 in the valgus and 4 in the varus position. Cemented cups were more commonly loose and cemented and cementless stems did equally well. No significant differences in rate of complications were found.
  
  
  CONCLUSIONS
  Cementless acetabular implants had better clinical results and a lower loosening rate at 3 years of follow-up compared to cemented implants at 5 years of follow-up. The cemented femoral implants were equally stable compared to the cementless ones.
authors.affiliation: Department of Orthopedics, Al Razi Hospital, Kuwait. pospulawieslaw@hotmail.com
authors.forename: Wieslaw
authors.initials: W
authors.lastname: Pospula
authors.forename: Tarek
authors.initials: T
authors.lastname: Abu Noor
authors.forename: Tarek
authors.initials: T
authors.lastname: Roshdy
authors.forename: Ali
authors.initials: A
authors.lastname: Al Mukaimi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods*; D004868:Equipment Failure; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D007730:Kuwait; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D011300:Preoperative Care; D011859:Radiography; D012189:Retrospective Studies; D016896:Treatment Outcome