Which projection is commonly used to assess the acromioclavicular joint?

The projection commonly used to assess the acromioclavicular joint is the weight-bearing bilateral view. This technique is particularly effective because it helps visualize any potential separation or injury to the acromioclavicular joint under stress. By having the patient perform the weight-bearing position, any displacement that may not be seen in a standard position can become more apparent, allowing for a better assessment of the joint's integrity and function.

Utilizing the weight-bearing bilateral view, radiologists can obtain images that demonstrate how the joint reacts under normal load conditions, providing critical information for diagnosing conditions such as acromioclavicular joint injuries or osteolysis. This view is essential in sports medicine and trauma assessments, where joint stability is a key concern.