gms | German Medical Science

Deutscher Kongress für Orthopädie und Unfallchirurgie
74. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie
96. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie
51. Tagung des Berufsverbandes der Fachärzte für Orthopädie und Unfallchirurgie

26. - 29.10.2010, Berlin

A 10–18 years follow up of the uncemented isoelastic monoblock RM acetabular component in young patients

Meeting Abstract

  • D. Pakvis - St Maartens Kliniek, orthopedic surgey, Nijmegen, Netherlands
  • L. Biemond - University Hospital St. Radboud, Nijmegen, Netherlands
  • G. van Hellemondt - St Maartens Kliniek, Nijmegen, Netherlands
  • M. Spruit - Dubai Bone and Joint Center LLC, Dubai, United Arab Emirates

Deutscher Kongress für Orthopädie und Unfallchirurgie. 74. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie, 96. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie, 51. Tagung des Berufsverbandes der Fachärzte für Orthopädie. Berlin, 26.-29.10.2010. Düsseldorf: German Medical Science GMS Publishing House; 2010. DocIN20-70

DOI: 10.3205/10dkou124, URN: urn:nbn:de:0183-10dkou1249

Published: October 21, 2010

© 2010 Pakvis et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.


Outline

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Objective: The purpose of this retrospective cohort study was to evaluate the long-term clinical and radiological survival of the uncemented isoelastic RM cup in high demand patients under 50 years.

Methods: During the period of 1990 and 1997 a cohort of 158 total hip arthroplasties were performed in our institution on 131 patients. The mean age was 42.4 years (range 16-50 years); 67 were female and 64 were male. The mean follow up period was 13.2 years ( range 10–18 years). Clinical and radiological analysis was performed using standard pelvic radiographs and questionnaires.

Results and conclusions: During follow up twenty-two patients underwent acetabular revision mainly due to acetabular wear. The mean wear rate was 0.11 mm/year (0–0.68) and was significantly higher in components with a metal on polyethylene articulation. Progressive significant acetabular osteolysis was seen in 4 patients (3%). Kaplan-Meier survival curves at 10 and 14 years showed survival of 98% (95% CI 95–100) and 80% (95% CI 72–89) for revision for any cause and 98% (95% CI 96–100) for aseptic loosening.