In the sequence of cues for wall angles, which component is set up to enable upward rotation of the shoulder blade?

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Upward rotation of the shoulder blade happens at the scapulothoracic joint, so preparing the shoulder blade itself is what makes that rotation possible. In wall angle cues, you set up the scapula on the rib cage so it can rotate upward as the arms move, creating the proper glenoid orientation for overhead motion. The other elements—elbow position, thoracic extension, and pelvis alignment—support overall alignment and range, but the rotation you’re aiming for is driven by the scapula. With the scapula positioned and stabilized appropriately, the muscles around it (like serratus anterior and trapezius) can rotate it upward effectively, enabling smooth, full shoulder elevation.