Table 4.

Visibility of anatomical regions of the shoulder

	Reader 1			Reader 2
Anatomical regions	CS	CS DL	p value	CS	CS DL	p value
Rotator cuff tendons	2.3 ± 0.4	3.5 ± 0.3	0.04	2.2 ± 0.4	3.5 ± 0.3	0.03
Long biceps tendon	2.8 ± 0.5	3.5 ± 0.4	0.59	2.8 ± 0.4	3.4 ± 0.4	0.53
Biceps anchor	2.1 ± 0.3	3.1 ± 0.4	0.06	2.3 ± 0.3	3.2 ± 0.2	0.05
Rotator interval	2.4 ± 0.4	3.5 ± 0.1	0.02	2.4 ± 0.1	3.4 ± 0.2	0.03
AC joint	2.6 ± 0.3	3.6 ± 0.2	0.26	2.7 ± 0.3	3.6 ± 0.2	0.34
Articular cartilage	2.3 ± 0.4	3.5 ± 0.2	0.03	2.2 ± 0.2	3.5 ± 0.3	0.02
Axillary recess	2.0 ± 0.6	3.2 ± 0.4	0.02	2.1 ± 0.4	3.2 ± 0.3	0.04
Labrum	2.2 ± 0.3	2.9 ± 0.2	0.21	2.2 ± 0.3	2.9 ± 0.2	0.34
Bone	2.5 ± 0.3	3.2 ± 0.5	0.69	2.3 ± 0.4	3.1 ± 0.4	0.74
Muscle	2.5 ± 0.4	3.3 ± 0.6	0.55	2.6 ± 0.5	3.3 ± 0.4	0.62

Data are presented as means ± standard deviations

4-point Likert scale (4 = excellent; 1 = inadequate)