Table 2.
Mean and standard deviation of the range of knee flexion (°), axial rotation of the femoral component and the insert (°) and anterior-posterior (AP) translation (mm) of the lateral and medial condyle during the step-up motion for each prosthetic group
| Prosthesis | Knee flexion (°) | Axial rotation (°) | AP translation (mm) | ||
|---|---|---|---|---|---|
| Femoral component | Mobile insert | Medial condyle | Lateral condyle | ||
| Duracon | 59.7 (9.3) | 8.6 (2.3) | – | 9.0 (2.1) | 11.1 (3.4) |
| Triathlon FB | 60.3 (5.4) | 8.3 (2.7) | – | 6.6 (1.5) | 7.1 (1.8) |
| Triathlon MB | 62.0 (12.9) | 9.6 (4.3) | 8.7 (4.9) | 6.8 (2.0) | 6.0 (1.6) |
| PFC-Sigma | 56.5 (9.9) | 8.3 (4.5) | – | 5.3 (1.9) | 6.8 (2.5) |
| NexGen | 34.5 (10.3) | 3.0 (0.5) | 2.0 (0.7) | 3.9 (2.1) | 4.8 (1.8) |
| ROCC | 59.0 (8.8) | 10.4 (5.4) | 7.3 (2.8) | 6.9 (2.0) | 7.0 (1.5) |
| Levene’s test | 0.83 n.s. | 3.80 P = 0.006 | 9.60 P = 0.001 | 0.31 n.s. | 1.74 n.s. |
| ANOVA Brown-Forsythe | F(5, 36.7) = 8.38 P = 0.000 | F(5, 25.1) = 3.56 P = 0.014 | F(2, 13.2) = 9.11 P = 0.003 | F(5, 40.7) = 6.46 P = 0.000 | F(5, 34.6) = 8.55 P = 0.000 |
Also, the results of the Levene’s test and ANOVA are presented. There was a significant effect of prosthetic design on all outcome variables
–: Fixed-bearing prosthesis; therefore, no ‘mobile insert’ data
n.s. Not significant