Randomized comparison between the cemented Scientific Hip Prosthesis and Omnifit: 2-year DEXA and minimum 10-year clinical follow-up.

Autor: Broeke RH; Department of Orthopaedic Surgery, Maastricht University Medical Centre, 6202 AZ Maastricht, The Netherlands., Harings SE, Emans PJ, Jutten LM, Kessels AG, Geesink RG
Jazyk: angličtina
Zdroj: The Journal of arthroplasty [J Arthroplasty] 2013 Sep; Vol. 28 (8), pp. 1354-61. Date of Electronic Publication: 2013 Feb 27.
DOI: 10.1016/j.arth.2012.09.024
Abstrakt: Radiostereometry (RSA) of the cemented Scientific Hip Prosthesis (SHP) reported excessive migration and predicted high failure rates. In a prospective randomized clinical trial we compared minimum 10 years results of the SHP (n=38) with the Omnifit-stem (n=37). Two-year bone remodelling, compared with dual energy x-ray absorptiometry and assessed in regions of interest A-D based on the 7 Gruen zones, showed better periprosthetic bone preservation around the SHP in all but one regions (P<.05). At 10 years Harris Hip Score was better for the SHP (P=.0001) but Oxford Hip Score was the same (P=.79). There were no revisions in either group, but radiographic loosening was definite in 1 SHP and 1 Omnifit. Based on earlier RSA studies, the rough surface finish of the SHP was expected to cause cement abrasion, osteolysis and inferior survival. However our clinical and remodelling results could not confirm these expectations, suggesting that the link of early migration and mid-term clinical results is not sufficiently clear for the SHP.
(Copyright © 2013 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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