TY  - JOUR
T1  - Primary Cementless Acetabular Fixation at a Minimum of Twenty Years of Follow-upA Concise Update of a Previous Report*
AU  - Stefl, Michael D.
AU  - Callaghan, John J.
AU  - Liu, Steve S.
AU  - Pedersen, Douglas R.
AU  - Goetz, Devon D.
AU  - Johnston, Richard C.
Y1  - 2012/02/01
N1  - 10.2106/JBJS.K.00237
JO  - The Journal of Bone & Joint Surgery
SP  - 234
EP  - 239
VL  - 94
IS  - 3
N2  - 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.
SN  - 0021-9355
M3  - doi: 10.2106/JBJS.K.00237
UR  - http://dx.doi.org/10.2106/JBJS.K.00237
ER  -