Table 3 Deviations of the landmarks. Manual method’s deviation (MMD) (n = 400), ITP method’s deviation (ITPMD) (n = 20), p values of the Wilcoxon rank-sum test (α = 0.05).
From: A robust method for automatic identification of landmarks on surface models of the pelvis
Landmark | Direction | MMD [mm] | ITPMD [mm] | p value | ||||
|---|---|---|---|---|---|---|---|---|
Median | IQR (Q1 to Q3) | Range (min. to max.) | Median | IQR (Q1 to Q3) | Range (min. to max.) | |||
ASISs | Med.-Lat. | 0 | 2.5 (−1.3 to 1.2) | 12.1 (−5.7 to 6.4) | −0.3 | 3.0 (−1.4 to 1.5) | 9.5 (−5.9 to 3.6) | 0.95 |
Pos.-Ant. | −0.3 | 1.0 (−0.9 to 0.1) | 13.1 (−11.0 to 2.1) | 0.6 | 0.6 (0.3 to 0.8) | 2.5 (0.0 to 2.5) | <0.05 | |
Inf.-Sup. | 0 | 3.5 (−1.5 to 2.0) | 29.6 (−13.4 to 16.3) | 3 | 3.4 (1.7 to 5.1) | 13.2 (−1.3 to 11.9) | <0.05 | |
Euc. Dist. | 2.7 | 2.6 (1.6 to 4.2) | 17.3 (0.0 to 17.3) | 3.4 | 2.4 (2.8 to 5.3) | 12.4 (0.0 to 12.4) | <0.05 | |
PS | Med.-Lat. | 0 | 0.4 (−0.2 to 0.2) | 5.3 (−2.8 to 2.5) | 0 | 0.7 (−0.4 to 0.3) | 5.0 (−2.2 to 2.8) | 0.71 |
Pos.-Ant. | 0 | 0.8 (−0.5 to 0.3) | 11.1 (−7.4 to 3.7) | 2.1 | 1.8 (1.1 to 2.9) | 6.2 (0.6 to 6.8) | <0.05 | |
Inf.-Sup. | 0 | 1.7 (−0.8 to 0.9) | 9.5 (−4.2 to 5.4) | 1.4 | 2.8 (0.7 to 3.5) | 9.4 (−2.6 to 6.8) | <0.05 | |
Euc. Dist. | 1.1 | 1.1 (0.7 to 1.8) | 7.6 (0.0 to 7.7) | 3.3 | 2.4 (2.5 to 4.8) | 6.9 (1.4 to 8.3) | <0.05 | |
PSISs | Med.-Lat. | 0 | 2.9 (−1.6 to 1.3) | 22.6 (−13.1 to 9.6) | −0.5 | 1.8 (−1.3 to 0.4) | 5.3 (−3.2 to 2.0) | 0.16 |
Pos.-Ant. | 0.3 | 0.8 (0.0 to 0.8) | 8.2 (−1.0 to 7.2) | 0 | 0.3 (−0.2 to 0.1) | 1.7 (−0.8 to 0.9) | <0.05 | |
Inf.-Sup. | 0 | 3.7 (−2.1 to 1.6) | 29.1 (−20.4 to 8.7) | 1.2 | 2.2 (0.1 to 2.3) | 8.3 (−2.1 to 6.2) | <0.05 | |
Euc. Dist. | 2.9 | 3.0 (1.8 to 4.7) | 22.6 (0.0 to 22.6) | 1.9 | 1.7 (1.3 to 3.0) | 6.3 (0.0 to 6.3) | <0.05 | |
ISs | Med.-Lat. | 0 | 1.0 (−0.5 to 0.5) | 8.1 (−4.0 to 4.1) | 0 | 1.7 (−0.9 to 0.8) | 6.0 (−2.2 to 3.8) | 0.75 |
Pos.-Ant. | 0.1 | 0.8 (−0.1 to 0.6) | 6.8 (−1.4 to 5.5) | 0.9 | 0.7 (0.5 to 1.2) | 2.2 (−0.2 to 2.0) | <0.05 | |
Inf.-Sup. | 0 | 1.9 (−1.0 to 1.0) | 16.2 (−8.8 to 7.3) | −1 | 1.9 (−2.4 to −0.5) | 6.0 (−5.2 to 0.8) | <0.05 | |
Euc. Dist. | 1.4 | 1.4 (0.9 to 2.3) | 10.2 (0.0 to 10.2) | 1.9 | 1.3 (1.5 to 2.7) | 5.2 (0.7 to 5.9) | <0.05 | |
SPs | Med.-Lat. | 0 | 1.7 (−0.9 to 0.8) | 10.3 (−4.8 to 5.5) | −0.3 | 3.4 (−2.4 to 1.0) | 9.5 (−5.0 to 4.6) | 0.22 |
Pos.-Ant. | −0.1 | 0.3 (−0.3 to 0.0) | 2.3 (−1.6 to 0.7) | 0 | 0.3 (−0.1 to 0.2) | 1.0 (−0.3 to 0.7) | <0.05 | |
Inf.-Sup. | 0 | 1.1 (−0.5 to 0.6) | 4.2 (−1.9 to 2.3) | 0.7 | 1.2 (0.1 to 1.3) | 3.2 (−0.6 to 2.7) | <0.05 | |
Euc. Dist. | 1.1 | 0.8 (0.9 to 1.7) | 5.5 (0.0 to 5.5) | 1.9 | 2.4 (1.0 to 3.4) | 5.1 (0.0 to 5.1) | <0.05 | |
