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 .
Kinematic total knee arthroplasty: a 10- to 14-year prospective follow-up review.
To underst and better the type and incidence of long-term complications in  total knee replacement , 306 primary Kinematic total knee arthroplasties performed between June 1978 and December 1982 were prospect ively review ed in detail . The Kinematic knee is a nonconstrained , posterior cruciate-retaining prosthesis that has right and left femoral components to afford anatomic tracking of the patella . The overall revision rate was 6.5 % . The most common cause for revision surgery was patellar complications . Ten revisions ( 3.06 % ) were for patellar component loosening . Two knees were revised for patella subluxation ( 0.65 % ) ; 1 was in a resurfaced rheumatoid patella , and 1 in an unsurfaced osteoarthritic patella . Stair climbing was better with an unsurfaced patella . Anterior knee pain was 21.8 % in the unsurfaced patella and 11.2 % in the replaced patella . These data suggest patella replacement is not appropriate with this design
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 .