Ac Joint Dislocation Radiopaedia

Acromio clavicular dislocation type iii.

Ac joint dislocation radiopaedia. Inferior border of the clavicle is elevated beyond the superior border of the acromion. It takes into account not only the acromioclavicular joint itself but also the coracoclavicular ligament the deltoid and trapezius. These are performed with the patient erect and holding a weight in the arm. This well known 6 type system is a modification of the earlier 3 class classification system described by allman 1967 2 and tossy 1963.

1 article features images from this case. The acromioclavicular joint acj is a plane synovial joint diarthrodial joint of the pectoral girdle. Widening of the acromioclavicular joint. The cause of dyspnoea in this case is a right pleural effusion.

According to the rockwood classification it is considered a type iii injury. Ac radiographs are performed for a variety of indications including. Treatment is immobilzation or surgical reconstruction depending on the degree of separation and ligament injury. If the joint is normal then acromioclavicular alignment should remain normal and symmetric.

May be the only finding in type i injuries. The rockwood classification 1998 is the most common classification system in use for acromioclavicular joint injuries 3. Direct blows to the shoulder region. Complete rupture of the acromioclavicular and coracoclavicular ligaments.

Widening of the coracoclavicular cc distance 23mm case discussion. Injuries of the trapezius and deltoid muscles. The right acromioclavicular joint dislocation is incidentally noted suggesting an old injury. The cause of dyspnea in this case is a right pleural effusion.

A acromioclavicular joint injury otherwise known as a shoulder separation is a traumatic injury to the acromioclavicular ac joint with disruption of the acromioclavicular ligaments and or coracoclavicular cc ligaments. Gross anatomy the acromioclavicular joint is between the small facet of the convex distal clavicle and flat medial acromion. The acromioclavicular ac joint radiographic series is used to evaluate the acromioclavicular joint and the distal clavicle. Dislocation of the right acromioclavicular joint with the clavicle displaced superiorly.