Fig. 2

Projection of the latissimus dorsi muscle (red lines) overlapping the scapula in the coronal CT scan of a patient within the arms-up group (a₁) and within the arms-down group (b₁), respectively. The scapula area (green lines) was defined with anatomical borders and a line between the scapular notch and the distal end of the glenoidal cavity as the medio-proximal border (a₂ and b₂)