RT Journal
A1 Stefl, Michael D.
A1 Callaghan, John J.
A1 Liu, Steve S.
A1 Pedersen, Douglas R.
A1 Goetz, Devon D.
A1 Johnston, Richard C.
T1 Primary Cementless Acetabular Fixation at a Minimum of Twenty Years of Follow-upA Concise Update of a Previous Report*
JF The Journal of Bone & Joint Surgery
JO The Journal of Bone & Joint Surgery
YR 2012
FD February 1
VO 94
IS 3
SP 234
OP 239
DO 10.2106/JBJS.K.00237
UL http://dx.doi.org/10.2106/JBJS.K.00237
AB Abstract: 
  The purpose of the present study was to analyze the longer-term results for a previously reported cohort of patients with cementless acetabular fixation and to compare the results with those for historical controls with cement fixation and a comparable follow-up period. One hundred and twenty consecutive nonselected total hip arthroplasties were performed in 108 patients with use of a cementless acetabular component. This series was evaluated at a minimum of twenty years of follow-up and was compared with 330 consecutive hip arthroplasties that had been performed by the same surgeon with use of cemented acetabular components and had been followed for a comparable period of time. Thirty-nine patients (forty-two hips) in the cementless fixation group were living at twenty years of follow-up. In the group of 120 hips with cementless acetabular fixation, twenty-two hips (18.3%) were revised during the follow-up period, but only one hip (0.8%) was revised because of loosening of the acetabular component, with no additional cup loosening since the previous report at thirteen to fifteen years of follow-up. In the group with cemented acetabular fixation with comparable follow-up, thirty-two hips (10%) were revised overall and eighteen hips (6%) were revised because of acetabular loosening. An additional twenty-five hips (8%) had acetabular cups that were loose on radiographs but had not undergone revision. At a minimum of twenty years of follow-up, cementless acetabular components provided superior long-term fixation compared with cemented components but the overall rates of acetabular revision for mechanical reasons were comparable.Level of Evidence: 
  Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.