Publication at First Faculty of Medicine |
2009
Abstract
Migration of the acetabular component may give rise to oval-shaped bone defects in the acetabulum. The oblong implant is designed to fill these defects and achieve a stable cementless anchorage with no significant bone loss.
We prospectively reviewed 133 oblong long oblique revision components at a mean follow-up of 9.74 years ( 0.6 to 14). All had been used in revisions for defects of type IIB to IIIB according to Paprosky.
Aseptic loosening was the reason for revision in 11 cases ( 8.3%) and deep infection in seven ( 5.3%). The probability of implant survival over a 12-year follow-up estimated by the Kaplan-Meier method gave a survival rate of 0.85% respectively 0.90% when deep infection was excluded as the endpoint.