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 .
Cemented versus uncemented socket in hip arthroplasty. A radiostereometric study of 60 randomized hips followed for 2 years.
60 patients with arthrosis who received a Charnley total hip replacement were r and omly assigned to either an uncemented porous Harris-Galante type I socket or a cemented all-polyethylene Charnley socket .  Socket migration and rotation were studied by radiostereometry ( RSA ) for 2 years . After 2 years , all sockets were still in situ . There was no difference in migration or rotation between the 2 socket design s , nor was there any difference in pain or function . We conclude that the initial fixation of the Harris-Galante socket resembles that of the Charnley socket
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 .