Table 2.
Comparison of radiologic results and polyethylene liner thickness between the MAKO and conventional groups
| MAKO group (n = 154) |
Conventional group (n = 154) | P-value | |
|---|---|---|---|
| Preoperative (degree) | |||
| HKA axis | 8.9 ± 3.9 | 9.0 ± 2.8 | n.s |
| Posterior slope | 7.4 ± 1.9 | 7.5 ± 2.0 | n.s |
| Postoperative (degree) | |||
| HKA axis | 1.9 ± 1.6 | 2.8 ± 1.5 | < 0.05 |
| α | 91.2 ± 0.8 | 91.8 ± 1.2 | < 0.05 |
| β | 90.8 ± 0.5 | 91.1 ± 0.8 | < 0.05 |
| δ | 90.7 ± 0.6 | 91.7 ± 1.0 | < 0.05 |
| Postoperative outliers, n (%) | |||
| HKA axis | 28 (18.2) | 55 (35.7) | < 0.05 |
| α | 5 (3.2) | 22 (14.3) | < 0.05 |
| β | 0 (0) | 2 (1.3) | n.s |
| δ | 0 (0) | 14 (9.1) | < 0.05 |
| Polyethylene liner thickness, n (%) | n.s | ||
| 9 mm | 84 (54.5) | 76 (49.3) | |
| 11 mm | 55 (35.7) | 54 (35.1) | |
| 13 mm | 15 (9.8) | 20 (13.0) | |
| 16 mm | 0 (0) | 4 (2.6) | |
HKA hip-knee-ankle, α coronal inclination of the femoral component, β coronal inclination of the tibial component, δ sagittal inclination of the tibial component, n.s. not significant