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 .
Impact of modern technique on long-term results of total condylar knee arthroplasty.
This study reports the 14-year survivorship for 106 consecutive total condylar knee arthroplasties implanted using modern technique . All were performed by a single surgeon and have been observed prospect ively since 1979 . Failure was defined as revision for any reason , or radiographic evidence of loosening of the components . Life-table analysis reveals a 95.6 % clinical survival rate at 14 years , with no radiographically loose components . Confidence interval is + /- 4.2 % . There were 4 revisions , but none for aseptic loosening , and there are no impending revisions . Thirty-seven patients ( 49 knees ) were known to be deceased as of April 1993 , and 8 other patients are lost to followup . Clinical results for patients with pre- and postoperative Hospital For Special Surgery knee scores show 72 knees rated excellent and 11 good ( mean score , 90 points ) . The 4 failures were rated poor . Mean flexion was 100 degrees . Radiographs of 93 knees were evaluated using the criteria of the Knee Society . Average overall alignment was 5 degrees valgus . Radiolucencies were present in 29 of 78 femoral components with adequate radiographs , and averaged 1 mm in 1 zone . Tibial radiolucency was present in 42 of 93 tibiae , again averaging 1 mm in 1 zone , with no loose pegs . In comparison with the first series of total condylar prostheses , this series showed comparable clinical results , with improved radiographic results , and no radiographic failures
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 .