Table 2.
Median and interquartile ranges of surface root mean squared errors and distances between segmented and reconstructed hip joint centre locations for reconstructions of the femur and tibia/fibula from a statistical shape model (SSM) using one mode of variation, uniform scaling and scaling using segment length and pelvis width. For a significance level of α=0.05, significant differences between values are indicated with identical superscripts.
| Reconstruction method | Landmark set | Tibia/Fibula (mm) | Femur (mm) | Hip joint centre distance (mm) |
|---|---|---|---|---|
| SSM reconstruction | Segmented bone | 2.88 (0.62) | 2.60a (1.05) | 13.82*,† (9.62) |
| Measured skin | 2.95A (1.03) | 2.68 (1.26) | 17.02 (14.07) | |
| SSM reconstruction with soft tissue correction | Measured skin | 2.90B (0.82) | 2.66b (1.74) | 16.10 (10.61) |
| Uniform scaling with segment length | Measured skin | 3.87 (0.96) | 3.66 (1.50) | 22.07* (8.71) |
| Scaling with segment length and pelvis width | Measured skin | 3.84A, B (0.82) | 3.76a,b (1.51) | 22.40† (9.54) |
A, a, b, *, †: p < 0.05; B: p < 0.01.