A 35-year-old male patient presents to your clinic with a 2-week history of left shoulder pain and limited range of motion following a fall during a basketball game. He reports landing directly on the tip of his left shoulder. On physical examination, you note mild swelling and tenderness over the left clavicle, and the patient demonstrates limited range of motion in the left shoulder. Based on these findings, you decide to assess clavicular motion to better understand the extent of the patient’s injury. Given the patient’s presentation, which statement best describes the normal physiological motion of the clavicle during shoulder abduction?