Table 1.
Mean ± standard deviation of pre- and post-operative radiographic measurements among aligned and outlier TKAs.
| Aligned | Outlier | Overall | |
|---|---|---|---|
| Preoperative Measurements * | |||
| Mechanical Femur | 1.0 ± 3.1 | 0.8 ± 2.6 | 1.0 ± 3.0 |
| FMA Angle | −6.0 ± 0.8 | −6.5 ± 1.3 | −6.1 ± 0.9 |
| TMA | −2.9 ± 3.7 | −4.5 ± 2.6 | −3.3 ± 3.6 |
| Overall Mechanical | −5.7 ± 6.9 | −8.1 ± 6.0 | −6.2 ± 6.7 |
| Plateau W (mm) | 83.1 ± 7.1 | 85.5 ± 9.5 | 83.5 ± 7.6 |
| Mechanical W (mm) | 21.1 ± 25.4 | 12.0 ± 14.5 | 19.4 ± 24.7 |
| Tibial Slope | 6.2 ± 3.9 | 7.5 ± 4.0 | 6.4 ± 3.9 |
| Post-operative Measurements * | |||
| Mechanical Femur | 0.3 ± 1.3 | −0.3 ± 2.4 | 0.2 ± 1.6 |
| Mechanical Tibia | −0.5 ± 1.6 | −5.5 ± 2.7 | −1.4 ± 2.7 |
| Overall Mechanical | 74.7 ± 4.7 | 77.8 ± 7.0 | 75.3 ± 5.2 |
| Plateau W (mm) | 35.0 ± 6.1 | 27.0 ± 14.1 | 33.6 ± 8.6 |
| Mechanical W (mm) | 12 ± 3.3 | 11.5 ± 3.3 | 11.9 ± 3.3 |
| Tibial Slope | 1.7 ± 2.8 | 2.1 ± 2.9 | 1.7 ± 2.8 |
* Degrees, FMA = femoral mechanical axis, W = width, TMA = tibial mechanical angle.