Optimal Management of Acromioclavicular Dislocation.

Classification of AC joint injury. Acromioclavicular joint injuries can be labeled as types I to VI depending on the severity of the injury. The type of injury can be determined with the aid of examination of the patient and imaging. The classification is as follows.

The Rockwood classification was used to assess acromioclavicular joint injuries at radiography and MRI. An adapted Rockwood classification was used for MRI evaluation of the acromioclavicular joint ligaments. The classifications of acromioclavicular joint dislocations diagnosed with radiography and MRI were compared.

The acromioclavicular joint, or ACJ, is formed by the end of the clavicle (collar bone) and the acromion (part of the shoulder blade). There are ligaments that keep this joint stable and a small disc between the ends of the bones which can degenerate by our fifth decade of life.

The acromioclavicular joint, or AC joint, is a joint at the top of the shoulder. It is the junction between the acromion (part of the scapula that forms the highest point of the shoulder) and the clavicle. It is a plane synovial joint. 3 Clinical significance. 3.2 Osteoarthritis. 4 Additional images. 7 External links.

Acromioclavicular (AC) joint injuries are common in athletic populations and account for 40% to 50% of shoulder injuries in many contact sports, including lacrosse, hockey, rugby and football. The AC joint is stabilized by static and dynamic restraints, including the coracoclavicular (CC) ligaments.

The authors discussed the diagnosis of acromioclavicular joint dislocations and stated, “Stress views taken with weights suspended from each wrist will provide the diagnosis.”1 They offered no.

Classification. Type I: Sprain of the acromio-clavicular or coracoclavicular ligament Type II: Subluxation of the acromioclavicular joint associated with a tear of the acromioclavicular ligament; coracoclavicular ligament is intact. Type III: Dislocation of the acromioclavicular joint with injury to both acromioclavicular and coracoclavicular ligaments.

Acromioclavicular joint injury: enhanced technique of examination with dynamic maneuver. J Clin Ultrasound 2007; 35:262. Tamaoki MJ, Belloti JC, Lenza M, et al. Surgical versus conservative interventions for treating acromioclavicular dislocation of the shoulder in adults.

Functional evaluation of the ligaments at the acromioclavicular joint during anteroposterior and superoinferior translation. Am J Sports Med 1997; 25:858-862. 5 Antonio GE, Cho JH, Chung CB, Trudell DJ, Resnick D. Pictorial essay. MR imaging appearance and classification of acromioclavicular joint injury. AJR Am J Roentgenol 2003; 180:1103-1110.

The severity of AC joint separation depends on which supporting structures are damaged and the extent of that damage. Separation of the acromioclavicular ligament alone is not a serious injury, but when the coracoclavicular ligaments are ruptured and the whole shoulder unit is involved, there are chances of complicating the separation.

Joint injury may result in subluxation, dislocation, diastasis, or fracture. Subluxation (sub, under; luxation, dislocation) is a displacement of a bone in relation to the apposing bone, resulting in partial loss of articulation of the opposing bone ends. Subluxation involves less joint misalignment than seen with a dislocation.

A joint dislocation, also called luxation, occurs when there is an abnormal separation in the joint, where two or more bones meet. A partial dislocation is referred to as a subluxation.Dislocations are often caused by sudden trauma on the joint like an impact or fall. A joint dislocation can cause damage to the surrounding ligaments, tendons, muscles, and nerves.