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Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 2 Calculated values

From: Calculation of pediatric femoral fracture rotation from direct roentgenograms

Actual rotation (AR) (°)

Mean calculated rotation (MCR) (°)

Mean absolute error (MAE) (°)

Mean relative error (MRE)

ER

IR

ER

IR

ER

IR

5

4.88

6.08

1.16

1.08

0.23

0.21

10

9.81

10.45

0.88

0.98

0.08

0.09

15

17.31

14.40

2.31

1.44

0.15

0.09

20

23.95

19.49

3.95

1.35

0.18

0.06

25

29.18

26.61

4.18

2.03

0.16

0.08

30

35.86

30.21

5.86

1.62

0.19

0.05

35

41.45

34.17

6.45

1.38

0.18

0.03

40

45.97

37.86

5.97

4.14

0.14

0.10

45

51.06

41.99

7.57

3.01

0.16

0.06

50

57.57

46.10

7.57

5.55

0.15

0.11

55

63.17

47.83

8.17

7.17

0.14

0.13

60

67.36

52.32

7.36

7.68

0.12

0.12

  1. MAE = ; MRE = 
  2. ER external rotation, IR internal rotation