Constrained acetabular liners in hip revision surgery. A low cost solution for senile patients

The objective of this study was to analyse the results using a cemented polyethylene model that captures the hip prosthetic head. In a retrospective study we have reviewed 36 cemented constrained acetabular liners implanted in patients older than 75 years (mean 83, SD: 4.4), 30 patients were aged between 80-90 years. The average period of follow-up of our patients was 25.4 months (12-39 months, SD: 7.3). 26 were women. In 26 patients this model was implanted due to recurrent dislocation or instability, in 8 other cases this model was implanted in revision surgery for periprosthetic fractures, aseptic loosening of the acetabular component, wear of the polyethylene or replacement of the implant because of infection. There was a single case of recurrent dislocation (2.8%). Cemented acetabular constrained liners are a good option in revision surgery in senile patients in which the femoral stem is firmly fixed to the bone