Acromioclavicular joint injuries are often seen after bicycle wrecks, contact sports, and car accidents. The acromioclavicular joint is located at the top of the shoulder where the acromion process and the clavicle meet to form a joint. Several ligaments surround this joint, and depending on the severity of the injury, a person may tear one or all of the ligaments. Torn ligaments lead to acromioclavicular joint sprains and separations Multiple indirect forces can result in an acromioclavicular j

The crossbody adduction test has a sensitivity of 77 percent and a specificity of 79 percent It is designed to provoke a symptomatic AC joint. The authors do not recommend to use this test as a stand-alone diagnostic tool but it can be valuable if done in a cluster. To conduct the test elevate the arm to 90 degrees of flexion and then at maximum horizontal adduction. A positive test will produce pain on top of the shoulder near the AC joint. Visit our youtube channel to watch the full video! Our