One-year Follow-up of 214 Total Knee Arthroplasties With Navigated Columbus Implants

In this study, 206 patients with 214 Columbus total knee arthroplasty, (TKA) implants were followed up at 1 year. Preoperatively, patient demographics (mean [SD]) were 85 male; age, 69.7 (8.7) years; ASA score, 2.5 (0.7); body mass index, 32.2 (5.7); 161 degrees varus and 27 degrees valgus; fixed flexion, 5.6 degrees (6.1 degrees); flexion, 96.1 degrees (18.8 degrees); and Oxford score, 43 (7.0). At 1-year follow-up, results were fixed flexion, 0.9 degrees (2.6): maximum, 17 degrees, minimum, 0 degrees; flexion, 101.3 degrees (9.1): maximum, 125 degrees, minimum, 75 degrees; and Oxford score, 23 (7.7). Radiographs showed radiolucent lines in 6 femurs in 1 zone; 1 in 2 zones and 0 in more than 2 zones; and 3 tibias in 1 zone. There were 2 deep infections. Ninety-eight percent of patients were satisfied with their TKA.