INTERPRETATION There was a clinical ly relevant association between early migration of acetabular cups  and late revision due to loosening .
BACKGROUND AND PURPOSE The association between excessive early migration of acetabular cups  and late aseptic revision has been scantily reported .
We therefore performed 2 parallel systematic review s and meta-analyses to determine the association between early migration of acetabular cups  and late aseptic revision .
Ten-year survivorship of the Anatomique Benoist Girard I total hip arthroplasty.
The Anatomique Benoist Girard ( ABG ) I total hip arthroplasty has been widely used in Europe since 1989 . Two recent midterm reports have shown high rates of component failure secondary to polyethylene wear . To further investigate this issue , our study prospect ively follows 157 consecutive primary total hip arthroplasties using the ABG I prosthesis at an average follow-up of 10 years .  Clinical outcomes have been excellent , although the incidence of thigh pain was 7.2 % . Radiographic evaluation of the cup showed eccentric polyethylene wear in 93.6 % of the patients . The average polyethylene linear wear was 2.40 mm , whereas the average annual wear rate was 0.25 mm/y . There were 7 hips ( 5.6 % ) with severe periacetabular osteolysis . Nine revisions were performed for loosening or wear . The overall component survival rate was 92.6 % . The overall survival rate was 92.6 % ( confidence interval , 78.55 - 96.47 ) for the acetabular component and 96.3 % ( confidence interval , 85.67 - 100 ) for the femoral component . Although the clinical and radiographic results of the ABG I total hip arthroplasty in this series have been acceptable , high rates of polyethylene wear , most likely related to sterilization by gamma-irradiation in air , have been the limiting factor in the long-term success of this design
INTERPRETATION There was a clinical ly relevant association between early migration of acetabular cups  and late revision due to loosening .
BACKGROUND AND PURPOSE The association between excessive early migration of acetabular cups  and late aseptic revision has been scantily reported .
We therefore performed 2 parallel systematic review s and meta-analyses to determine the association between early migration of acetabular cups  and late aseptic revision .