Table 1 Intra-observer error (observer 1) on SAs estimates among female adolescent soccer players (n = 100)

Radius

15.6 ± 1.2

15.5 ± 1.3

82

82%

18

5

12

1

Ulna

16.1 ± 1.1

16.1 ± 1.1

86

86%

14

8

6

Capitate

12.9 ± 0.3

12.9 ± 0.4

93

93%

7

4

3

Hamate

12.8 ± 0.6

13.0 ± 0.2

92

92%

8

3

1

4

Triquetral

12.8 ± 0.6

12.9 ± 0.5

90

90%

10

1

3

2

4

Pisiform

–

–

100

100%

Lunate

12.9 ± 0.4

12.9 ± 0.4

96

96%

4

1

2

1

Scaphoid

12.9 ± 0.4

12.8 ± 0.5

91

91%

9

1

6

2

Trapezium

12.8 ± 0.6

12.8 ± 0.6

90

90%

10

1

1

1

7

Trapezoid

12.9 ± 0.4

12.9 ± 0.4

95

95%

5

1

1

2

1

Adductor Sesamoid

–

–

100

100%

Metacarpal I

14.9 ± 0.5

14.9 ± 0.5

94

94%

6

1

5

Metacarpal II

14.7 ± 0.6

14.6 ± 0.6

91

91%

9

5

4

Metacarpal III

14.7 ± 0.6

14.7 ± 0.6

92

92%

8

2

6

Metacarpal IV

14.8 ± 0.5

14.7 ± 0.6

90

90%

10

10

Metacarpal V

14.7 ± 0.5

14.7 ± 0.6

89

89%

11

3

6

2

Proximal phalange I

14.4 ± 0.6

14.4 ± 0.6

91

91%

9

1

4

4

Proximal phalange II

14.8 ± 0.5

14.7 ± 0.6

89

89%

11

1

10

Proximal phalange III

14.8 ± 0.5

14.7 ± 0.6

91

91%

9

9

Proximal phalange IV

14.8 ± 0.5

14.8 ± 0.6

89

89%

11

1

1

9

Proximal phalange V

14.7 ± 0.6

14.8 ± 0.6

90

90%

10

8

2

Medial phalange II

14.9 ± 0.4

14.8 ± 0.6

90

90%

10

1

8

1

Medial phalange III

14.9 ± 0.5

14.8 ± 0.6

91

91%

9

1

7

1

Medial phalange IV

14.9 ± 0.5

14.8 ± 0.5

91

91%

9

1

8

Medial phalange V

14.8 ± 0.5

14.8 ± 0.6

92

92%

8

4

4

Distal phalange I

14.3 ± 0.6

14.3 ± 0.6

97

97%

3

2

1

Distal phalange II

14.3 ± 0.6

14.3 ± 0.6

95

95%

5

2

3

Distal phalange III

14.3 ± 0.6

14.3 ± 0.6

96

96%

4

1

3

Distal phalange IV

14.3 ± 0.6

14.3 ± 0.6

96

96%

4

1

3

Distal phalange V

14.3 ± 0.5

14.3 ± 0.6

99

99%

1

1

Total disagreements

2768

232

6

7

64

139

16

0

%

92.3%

7.7%

2.6%

3.1%

27.6%

59.9%

6.9%

0.0