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 .
Clinical results of the modular porous-coated anatomic (PCA) total knee arthroplasty with cement: a 5-year prospective study.
Our study examines the clinical , radiographic , and patient satisfaction outcome of the cemented Modular Porous-Coated Anatomic ( PCA ) total knee arthroplasty with a minimum 5-year follow up . All data were gathered prospect ively and consecutively . Patient satisfaction was assessed with a self-administered survey . Statistical analysis examined the effect of 17 patient factors , 19 surgical factors , and postoperative continuous passive motion use on range of motion ( ROM ) and HSS scores at 2 years . Seventy-eight Modular PCA arthroplasties performed by 9 orthopedic surgeons on 71 patients between January 1988 and November 1989 are reported in this study .  Preoperative HSS scores averaged 51.2 and improved to an average of 89 at 1 and 2 years , and 86 at 5 years after surgery ( 90 % good or excellent ) . ROM changed after surgery through improvement in preoperative knee flexion contracture , but not in increased knee flexion . One patient underwent reoperation for patellar instability , and one patient 's arthroplasty was revised at 53 months for late instability . The total reoperation rate for any reason was 7.7 % . Zonal analysis for progressive radiolucency at the bone-cement interface showed increasing frequency of narrow ( < 1 mm ) radiolucencies concentrated on the anterior and medial aspect of the tibial tray . Ninety-eight percent of patients responded to an outcome question naire , and 96 % rated themselves improved . The Kaplan-Meier probability of an implant surviving without loosening at 5 years was 100 % . The Modular PCA TKA has a low incidence of patellofemoral problems , is clinical ly successful , and results are stable at a minimum 5-year follow-up examination
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 .