Authors: Yona Kosashvili Oleg Safir David Backstein Dror Lakstein Allan E Gross
Publish Date: 2009/06/20
Volume: 468, Issue: 2, Pages: 466-471
Abstract
Acetabular revision of failed cages or rings may be facilitated by previously placed bone graft enabling the use of highly porous cementless hemispheric cups We retrospectively reviewed all 15 patients who had conversion of failed antiprotrusion cages 10 patients or roof rings five patients to cementless cups All patients had restoration of bone stock three major column eight morselized four combined bone grafts performed in conjunction with their index cage or ring reconstruction arthroplasty The minimum followup was 24 months average 483 months range 24–72 months Failure was defined as radiographic cup migration In 12 of the 15 patients there was no radiographic change in cup position at the last followup or symptoms indicative of loosening The average Harris hip scores improved from 31 range 15–48 to 69 range 56–87 at latest followup Cup failure occurred in three patients In two patients the failed cups were revised the third patient refused additional surgery Our experience suggests treatment of failed cages by highly porous cementless cups is a reasonable option However we recommend patients be followed closely to detect cup migration which can occur until satisfactory bony ingrowth occursThe senior author AEG is a consultant for Zimmer Warsaw IN All other authors certify that they do not have commercial associations eg consultancies stock ownership equity interest patent/licensing arrangements etc that might pose a conflict of interest in connection with the submitted article
Keywords: