Passive range of motion was preserved.Musculoskeletal sonography confirmed the contour of her rotator cuff was intact, and no abnormal mass was observed.

• 超音波检查发现其肩背交界处的硬块，实际上是肩胛骨的上角，因左肩胛骨不正常下旋而突出，并不是组织肿瘤或肿块。