INTERPRETATION There was a clinical ly relevant association between early migration of TKPs and late revision for loosening .
PURPOSE We performed two parallel systematic review s and meta-analyses to determine the association between early migration of tibial components and late aseptic revision .
The Johnson-Elloy (Accord) total knee replacement. Poor results at 8 to 12 years.
We have found poor mid-term results in a multisurgeon series of 94 Johnson-Elloy ( Accord ) total knee replacements .  A total of 27 knees ( 29 % ) has required revision , in 26 for aseptic loosening . Only 18 ( 19 % ) remain in situ , and these give poor function , are painful and most show radiological evidence of early failure . At 12 to 13 years the survival rate is 43 % ( confidence interval 29 to 57 ) with failure requiring revision as the endpoint . Proximal migration of the femoral component is associated with considerable loss of bone stock . We believe that all patients who have this implant should be recalled for regular review in order to anticipate this problem
INTERPRETATION There was a clinical ly relevant association between early migration of TKPs and late revision for loosening .
PURPOSE We performed two parallel systematic review s and meta-analyses to determine the association between early migration of tibial components and late aseptic revision .