Table 2 Preoperatively planned correction and residual malalignment error after surgery are given for each patient

Ramp guide

1

26.82

26.58

3.15

−2.63

0.00

−0.05

0.01

4.45

3.34

−2.86

−0.61

0.25

0.77

−0.18

2

27.83

19.93

10.02

−18.63

0.47

−1.29

1.43

5.71

1.01

1.12

−5.52

1.65

0.27

0.06

3

14.64

5.35

3.74

−12.94

0.95

1.26

2.80

2.24

−1.21

0.09

−1.99

1.28

0.31

−0.58

4

12.24

11.28

2.71

−4.20

− 0.06

0.29

− 0.12

5.95

−3.84

− 0.06

− 4.55

−0.95

0.72

−1.35

5

23.98

23.57

3.14

−3.91

2.58

−2.07

−8.74

4.88

1.06

−2.92

−3.80

−0.21

0.22

0.19

6

36.31

34.33

4.49

−12.62

0.00

−0.26

0.11

1.69

−0.89

1.31

−0.61

−0.44

− 0.15

−0.29

7

20.29

19.55

4.94

−3.33

0.45

2.03

−0.43

4.08

−3.57

−1.26

−1.56

−1.12

0.51

−1.08

8

40.13

40.03

−2.54

−0.93

− 0.80

1.15

0.00

3.66

0.85

2.02

2.91

0.58

1.16

0.53

Control

9

22.79

19.33

10.98

−7.39

−1.66

1.16

5.31

7.94

4.90

2.33

−5.90

0.10

1.79

0.86

10

10.49

5.78

8.76

−0.71

0.55

0.36

7.66

4.76

3.63

0.56

−3.05

−1.99

−0.31

1.60

11

28.26

24.34

−9.81

12.96

−0.54

0.81

9.08

17.51

13.08

−3.74

11.50

−0.92

−1.66

1.44

12

35.39

7.42

32.61

9.84

0.09

1.15

17.93

12.47

4.06

10.86

4.25

−1.56

−1.21

2.17

13

23.58

−10.46

−19.88

5.70

0.09

0.72

5.81

9.38

−2.24

−9.11

−0.21

1.70

1.14

−0.44

14

33.65

−12.59

−16.12

−28.73

1.13

1.50

1.93

3.36

−0.36

− 0.55

−3.29

−0.90

−1.08

0.08

15

8.57

−2.51

0.48

8.19

4.43

4.57

1.83

2.70

1.14

2.44

−0.18

0.14

−0.35

0.53