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Table 3 Summary of the total area of the nutrient foramina for given size of nutrient foramina at each site

From: Total cross-sectional area of the femoral neck nutrient foramina measured to assess arterial vascular beds in the femoral head

Size of nutrient foramina

Superior retinacular arteries

Inferior retinacular arteries

Anterior retinacular arteries

Ligamentum teres arteries

n

mean±SD

range

(min., max.)

n

mean±SD

range

(min., max.)

n

mean±SD

range

(min., max.)

n

mean±SD

range

(min., max.)

D > 2 mm

24

4.47 ± 1.69

(3.2 , 9.75)

5

4.04 ± 0.86

(3.3 , 5.51)

1

5.51

-

2

4.07 ± 0.43

(3.76 , 4.37)

1.5 mm ≤ D ≤ 2 mm

54

3.73 ± 1.98

(1.77 , 10.11)

19

2.34 ± 0.35

(1.84 , 3.08)

15

2.3 ± 0.58

(1.77 , 3.85)

1

1.77

-

1 mm ≤ D < 1.5 mm

97

5.09 ± 3.1

(0.82 , 15.2)

66

1.73 ± 0.94

(0.8 , 5.88)

64

2.13 ± 1.26

(0.8 , 5.49)

17

1.24 ± 0.42

(0.83 , 2.17)

0.5 mm ≤ D < 1.0 mm

100

7.07 ± 2.61

(1.81 , 18.22)

98

1.8 ± 1.06

(0.2 , 5.83)

100

2.4 ± 1.29

(0.31 , 7.02)

47

1.14 ± 0.91

(0.28 , 5.09)

D < 0.5 mm

92

0.54 ± 0.37

(0.07 , 2.01)

46

0.19 ± 0.14

(0.07 , 0.87)

58

0.28 ± 0.19

(0.07 , 1.04)

16

0.24 ± 0.16

(0.08 , 0.69)

  1. Abbreviations: D, diameter; SD, standard deviations; min., minimum; max., maximum