Table 1.
Radiographic measurements in unisex and gender-specific TKAs
| Radiographic measurement | Female gender-specific (n = 39 knees) | Female unisex (n = 42 knees) | Male unisex (n = 41 knees) | Female gender-specific versus female unisex | Female gender-specific versus male unisex | Female unisex versus male unisex | |||
|---|---|---|---|---|---|---|---|---|---|
| p | 95% CI | p | 95% CI | p | 95% CI | ||||
| Posterior offset change (mm)* | 2.5 (2.2) | 1.3 (2.8) | 2.8 (2.6) | 0.04 | 0.1 to 2.3 | 0.59 | –1.4 to 0.8 | 0.01 | –2.6 to –0.3 |
| Femoral flexion (º)* | 4.4 (1.9) | 3.7 (2.3) | 4.4 (2.2) | 0.16 | –0.3 to 1.6 | 0.99 | –0.9 to 0.9 | 0.18 | –1.6 to 0.3 |
| Notch, number | 7 (18%) | 8 (19%) | 7 (17%) | 0.90 | –0.18 to 0.16 | 0.92 | –0.16 to 0.18 | 0.82 | –0.15 to 0.19 |
| Medial or lateral femoral component overhang, number | 2 (5%) | 7 (17%) | 0 (0%) | 0.10 | –0.25 to 0.02 | 0.14 | –0.02 to 0.12 | 0.006 | 0.05 to 0.28 |
| Anterior offset change (mm)* | −4.5 (2.3) | –3.1 (2.7) | –4.8 (3.4) | 0.01 | –2.6 to –0.3 | 0.66 | –1.0 to 1.6 | 0.01 | 0.4 to 3.1 |
| Tibial slope (º)* | 3.6 (1.6) | 3.3 (2.0) | 3.2 (2.1) | 0.57 | –0.6 to 1.0 | 0.40 | –0.5 to 1.2 | 0.78 | –0.8 to 1.0 |
*Values for variable expressed as means with standard deviations in parentheses; 95% CI = 95% confidence interval.