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 .
Five- to 8-year results of the uncemented Duracon total knee arthroplasty system.
We report prospect i ve clinical and radiographic outcomes of a series of 219 hydroxyapatite-coated Duracon ( Stryker Howmedica Osteonics Corporation , Kalamazoo , Mich ) total knee arthroplasties with a follow-up of 5 to 8 years .  Knee Society Score , Western Ontario and McMaster Universities Osteoarthritis index ( WOMAC ) , and SF-12 Health Status Question naire were used . Analysis of fluoroscopic radiographs was performed with the American Knee Society Score .  All living patients ( 186 knees ) were followed up . Twenty-eight patients ( 30 knees ) had died . The preoperative Knee Society Score of 43.8 increased to 77.1 and the preoperative Function score of 20.3 increased to 63.4 . WOMAC scores showed marked improvement ( pain , 250 preoperatively to 157 ; stiffness , 115 preoperatively to 56 ; and function , 910 preoperatively to 588 ) . There was no radiographic evidence of loosening or migration . Gaps visible at the bone-implant interface healed over the first year . Three prostheses were revised , 2 for deep infection and 1 for tibial tray subsidence . A survivorship of 98.6 % has been achieved at 8 years . This intermediate-term study with 100 % follow-up at 8 years demonstrates excellent clinical and radiographic outcomes . It is our opinion that these are comparable to the gold st and ard cemented total knee arthroplasties and may have advantages over other uncoated cementless 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 .