When testing for an AC joint injury, there are two main test clusters that can be used: the active compression test and the cross-body adduction test. These tests help determine if there is pain or dysfunction in the AC joint.
1. Active Compression Test:
This test is performed by having the patient actively bring their arm across their body and internally rotate the shoulder. The examiner then applies downward pressure on the arm, compressing the AC joint. The patient will typically feel pain or an increase in pain in the region of the AC joint if it is injured.
2. Cross-Body Adduction Test:
In this test, the patient’s affected arm is brought across their body, attempting to touch the opposite shoulder. The examiner then applies gentle pressure on the arm, pushing it further into adduction. If there is pain or an increase in pain in the AC joint region, it suggests an injury to the joint.
It’s important to note that these tests should be performed by a qualified healthcare professional who can interpret the results accurately. They should also be used in conjunction with other clinical assessments and imaging studies, such as X-rays or MRI, to confirm the diagnosis of an AC joint injury.
In my personal experience, I have had patients who presented with shoulder pain and suspected AC joint injury. By performing these tests and correlating them with other clinical findings, we were able to diagnose the AC joint injury accurately. These tests can be helpful in ruling in or ruling out an AC joint injury and guiding further management and treatment options.
To summarize, testing for an AC joint injury involves using the active compression test and the cross-body adduction test. These tests help determine if there is pain or dysfunction in the AC joint region. However, it is important to note that these tests should be performed by a healthcare professional alongside other clinical assessments and imaging studies for an accurate diagnosis.