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Table 1 Radiologic Measurements in Various Parameters at L1 to L5 in Our Results and Zindrick et al

From: What is the difference in morphologic features of the lumbar vertebrae between Caucasian and Taiwanese subjects? A CT-based study: implications of pedicle screw placement via Roy-Camille or Weinstein method

Radiologic parameters

Study

L1

L2

L3

L4

L5

Mean

SD

Range

Number

Mean

SD

Range

Number

Mean

SD

Range

Number

Mean

SD

Range

Number

Mean

SD

Range

Number

Pedicle angle (PA) (0)a

Our results

9.3

1.6

6–14

156

7.4

2.1

4–12

162

7.9

1.8

4–13

154

11.2

3.2

5–19

156

17.0

3.1

9–25

146

Zindrick et al

10.9

2.2

6.5–14.5

26

12

3.5

5–17.5

38

14.4

3.8

8.0–23.5

68

17.7

5.2

5.5–27.5

76

29.8

6.3

19–44

76

Midline axis distance (MAD) (mm)a

Our results

40.3

3.3

34–49

156

41.1

3.3

36–47

162

38.8

3.6

31–46

154

37.3

5.3

25–45

156

31.4

3.6

25–44

146

Zindrick et al

44.7

4.5

36–51

26

45.5

3.7

37–52

35

44.4

5.1

31–54

64

40.7

4.3

27–48

74

33.7

5.6

20–44

69

Pedicle axis distance (PAD) (mm)a

Our results

44.8

4.8

37–56

156

46.4

5.8

36–58

162

43.5

5.0

35–58

154

43.7

5.0

33–58

156

43.3

4.5

32–57

146

Zindrick et al

50.7

4.3

42–57

26

51.9

3.7

45–58

35

51.9

4.6

42–62

64

49.7

4.4

43–62

74

51.0

4.7

42–62

69

Pedicle diameter (PD) (mm)a

Our results

5.7

1.2

4–10.4

156

6.4

1.6

4–12.2

162

7.6

2.0

4.3–14.2

154

10.1

1.8

7–14.4

156

12.6

2.1

9.6–25.1

146

Zindrick et al

8.7

2.3

4.5–13

26

8.9

2.2

4–13

30

10.3

2.6

5.3–16

49

12.9

2.1

9.1–17

36

18.0

4.1

9.1–29

56

Transverse pedicle axis distance (TPAD) (mm)

Our results

45.3

3.5

40–52

156

48.1

3.6

42–55

162

46.1

4.1

40–57

154

45.7

4.1

39–55

156

44.1

4.3

35–57

146

Zindrick et al

                    
  1. No TPAD results were revealed in the Zindrick et al. These columns were empty
  2. The two sides of the pedicle angle, pedicle diameter, midline and pedicle axis and TPAD in one vertebrae were considered as independent sets of data
  3. a meant statistically significant between Caucasian and Taiwanese populations