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The medial border of the scapula is at the medial end of the spine of the scapula. This border is also called the vertebral border.
You can describe them as medial to the scapula.
Long (Scapular) Head: Infra-glenoid tubercle at the lateral border of scapula inferior to the glenoid fossa
Yes, both upward and lateral rotation are used to describe the same movement of the scapula. It's the movement of the scapula away from the midline.
lateral to the ribs