Evaluation of a porous tantalum uncemented acetabular cup in revision total hip arthroplasty: clinical and radiological results of 60 hips

Long-term survival of the acetabular component in revision total hip arthroplasty (THA) is determined by initial implant stability and bone ingrowth. Highly porous Trabecular Metal (TM, Zimmer, Inc, Warsaw, Ind) facilitates ingrowth and may be an ideal material for revision THA. The outcome and surv...

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Bibliographic Details
Published in:The Journal of arthroplasty 2005-12, Vol.20 (8), p.1002-1009
Main Authors: Unger, Anthony S, Lewis, Randall J, Gruen, Thomas
Format: Article
Language:English
Subjects:
Acetabulum - diagnostic imaging
Acetabulum - surgery
Adult
Aged
Aged, 80 and over
Arthroplasty, Replacement, Hip - instrumentation
Female
Hip Prosthesis
Humans
Male
Middle Aged
Postoperative Complications
Prosthesis Design
Prosthesis Failure
Radiography
Reoperation
Tantalum
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Summary:Long-term survival of the acetabular component in revision total hip arthroplasty (THA) is determined by initial implant stability and bone ingrowth. Highly porous Trabecular Metal (TM, Zimmer, Inc, Warsaw, Ind) facilitates ingrowth and may be an ideal material for revision THA. The outcome and survivorship of a TM, nonmodular, uncemented acetabular cup were assessed in 60 consecutive patients undergoing revision THA (mean follow-up, 42 months; range, 14-68 months). Most (55/60) acetabular cups were implanted without screw fixation. Mean Harris Hips Scores improved from 74.8 preoperatively to 94.4 at last follow-up. Serial radiographs demonstrated excellent bone apposition and bone graft incorporation. Complications were limited to 7 cases of dislocation and 1 revision for aseptic loosening. The TM acetabular cup appears suitable for use in revision THA and warrants further study.
ISSN:0883-5403
DOI:10.1016/j.arth.2005.01.023