Failure of HA coating on a gritblasted acetabular cup: 155 patients followed for 7-10 years

Acta Orthopaedica Scandinavica
Olav Reikerås, Ragnhild B Gunderson

Abstract

We report the outcome of 191 acetabular gritblasted titanium cups with a hemispherical design for press-fit insertion and coated with hydroxyapatite. The prosthesis was made of gritblasted titanium entirely coated with hydroxyapatite. 155 patients aged 15-78 years were operated on during the years 1991-1993 and followed for 7-10 years. During this period, 39 cups were revised because of mechanical loosening, a further 9 had radiolucent lines and 2 focal osteolysis. None of these 11 patients had clinical symptoms. Failure was associated with age, wear and radiolucency/osteolysis. At revision, we found that the soft tissues were discolored, and that most of the coating had disappeared. This design of hydroxyapatite-coated cups has a high rate of debonding and failure.

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Citations

Jun 27, 2006·Archives of Orthopaedic and Trauma Surgery·Olav Reikerås, Ragnhild B Gunderson
Jun 6, 2008·Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association·Young-Yool ChungYeon Soo Lee
Sep 17, 2008·Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia·Jiri GalloIvana Cechova
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Jul 5, 2012·Journal of Orthopaedic Science : Official Journal of the Japanese Orthopaedic Association·Haruhiko AkiyamaTakashi Nakamura
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Jun 20, 2006·The Journal of Arthroplasty·Je-Ken ChangGwo-Jaw Wang
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