Artroplastia total de cadera con componente acetabular de recubrimiento poroso.

Craig J. Della Valle, MD1, Richard A. Berger, MD1, Susan Shott, PhD1, Aaron G. Rosenberg, MD1, Joshua J. Jacobs, MD1, Laura Quigley, MS1 and Jorge O. Galante, MD1
1 Department of Orthopaedic Surgery, Rush University Medical Center, 1725 West Harrison Street, Suite 1063, Professional Building, Chicago, IL 60612. E-mail address for C.J. Della Valle: craigdv@yahoo.com

Investigation performed at the Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, Illinois

We previously reported the seven-to-ten-year results of the use of a porous-coated acetabular metal shell in a consecutive series of 204 primary total hip arthroplasties. In the present study, we evaluated the longer-term outcomes of these arthroplasties, at fifteen to eighteen years. One hundred and thirty-six (96%) of the 142 hips available for study retained the original acetabular metal shell. Three of the 142 metal shells failed secondary to aseptic loosening. Ten hips (7%) required a change of the modular acetabular liner because of excessive wear or for the treatment of osteolysis. The fifteen-year rate of survival of the metal shell, with failure defined as revision because of loosening or radiographic evidence of loosening, was 99%. The rate of survival of cementless acetabular reconstructions was excellent at fifteen years, although osteolysis and reoperations were noted to occur much more frequently as the duration of follow-up increased. The majority of the complications were related to wear of the polyethylene liner.