Table 1.
Patient demographics and clinical characteristics. Values are median (interquartile range) unless otherwise specified
| BS MC insert | I MC insert | P value | |
|---|---|---|---|
| Demographics | |||
| Age, mean (SD) | 67 (6) | 68 (7) | 0.4 |
| Male sex, n (%) | 19 (54) | 21 (60) | 0.8 |
| Body mass index, mean (SD) | 31 (6) | 31 (5) | 0.7 |
| Preoperative motion and deformity | |||
| Flexion contracture (°) | 10 (0–13) | 6 (4–10) | 0.4 |
| Flexion (°) | 118 (111–124) | 115 (108–120) | 0.07 |
| Varus (+)/valgus (–) deformity (°) | 10 (6–13) | 9 (–8 to 12) | 0.2 |
| Kellgren–Lawrence, n grade 3 / grade 4 | 12/23 | 11/24 | 1.0 |
| Preoperative function scores | |||
| Oxford Knee score a | 22 (13–29) | 25 (17–29) | 0.3 |
| 1-year postoperative motion | |||
| Extension (°) | 0 (0–2) | 1 (0–2) | |
| Flexion (°) | 118 (115–125) | 120 (110–125) | |
| 1-year postoperative function scores | |||
| Forgotten Joint score b | 73 (44–90) | 73 (48–88) | |
| Oxford Knee score a | 44 (40–46) | 44 (38–46) | |
a
48 best, 0 worst
b
100 best, 0 worst
SD = standard deviation.