Ac Joint Separation Radiology

In particular the integrity of the coracoclavicular ligament plays a central role in this classification.

Ac joint separation radiology. See also acromioclavicular joint injuries. This well known 6 type system is a modification of the earlier 3 class classification system described by allman 1967 2 and tossy 1963. It is the primary. Coracoclavicular distance usually 11 13 mm.

Ac joint space is usually 5mm. Fractures and dislocations of the shoulder. Rockwood classification of acromioclavicular joint separations clinical orthopaedics and related research 475 1. Its role in defining pathoanatomy at the acromioclavicular joint.

The acromioclavicular ap view is a single projection assessing the patency of the acromioclavicular joint. The rockwood classification 1998 is the most common classification system in use for acromioclavicular joint injuries 3. Right and left should differ by 5 mm. And separation of the ac joint in a type iii ac joint separation.

The superior acromioclavicular ligament blends anteriorly and posteriorly with the aponeuroses of these muscles respectively and when present is in contact with the articular disk 10 11. It takes into account not only the acromioclavicular joint itself but also the coracoclavicular ligament the deltoid and trapezius. From harris and harris radiology of emergency medicine. J surg orthop adv 2004.

Evaluation and treatment of acromioclavicular joint injuries. Direct blows to the shoulder region. The strong accessory coracoclavicular ligament is the main stabilizer of the acj particularly at large degrees of separation 9. Even when 3 dimensional ct scan imaging was utilized there were still significant differences of opinion about the severity of injury.

14 mazzocca ad arciero ra bicos j. Patient position patient is erect midcoronal plane of the patient is parallel to the image. Numerous studies have demonstrated that when groups of experienced orthopedic surgeons were asked to grade ac joint separation injuries based on standard x rays there was considerable differences of opinion. Almost invariably traumatic in etiology they range in severity from a mild sprain to complete disruption.

Acromioclavicular joint injuries are characterized by damage to the acromioclavicular joint and surrounding structures. Ac radiographs are performed for a variety of indications including. The acromioclavicular ac joint radiographic series is used to evaluate the acromioclavicular joint and the distal clavicle.