Table 1.
Patients demographic data: age, body mass index (BMI), preoperative Knee Society Score (KSS), preoperative mechanical axis and preoperative hemoglobin (Hb) level
| Parameters | STD group (N = 19) | PMI group (N = 19) | ||||
|---|---|---|---|---|---|---|
| Mean ± SD | ||||||
| Age | 66.8 ± 6.7 | 67.1 ± 7.1 | ||||
| BMI | 33.3 ± 5.5 | 31.9 ± 5.3 | ||||
| KSS for knee and function | 49 ± 15 | 54 ± 18 | ||||
| 63 ± 11 | 58 ± 21 | |||||
| Mean ± SD | 95 % CI | Median | Mean ± SD | 95 % CI | Median | |
| Preoperative mechanical axisa | 3.6 ± 2.4 | 2.5–4.8 | 3.1 | 4.2 ± 2.0 | 3.2–5.1 | 4.3 |
| Preoperative Hb level | 133 ± 16 | 125–140 | 137 | 134 ± 12 | 128–140 | 135 |
There were no statistical significant differences among the groups
STD standard TKA instrumentation, PMI patient-matched instruments
aRepresented as an absolute difference from the neutral axis