The acromioclavicular (AC) shear test is a way to physically examine the AC joint for problems. While it's used by some clinicians, we don't currently have enough research to know how accurate it is in identifying AC joint pathology. More studies are needed to understand how useful this test really is. #acjoint #acsheartest #shoulderpain #shoulderinjury #physicaltherapy #orthopedics #sportsmedicine #researchneeded #clinicaltrials #jointhealth