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Type 3 AC joint separation on plain X ray. In a Type III AC separation both acromioclavicular and coracoclavicular ligaments are torn without significant disruption of the deltoid or trapezial fascia. [11] A significant bump, resulting in some shoulder deformity, is formed by the lateral end of the clavicle.
It has the normal separation of <4 mm. Grade II is a partial dislocation of the AC joint with a complete disruption tear of the AC joint and a partial disruption of coracoclavicular ligament. The AC gap is >5 mm. Grades I and II never require surgery and heal by themselves, though physical therapy may be required.
The acromioclavicular (AC) joint is located between the acromion (part of the scapula that forms the highest point of the shoulder) and the clavicle. The glenohumeral joint , to which the term " shoulder joint " commonly refers, is a ball-and-socket joint that allows the arm to rotate in a circular fashion or to hinge out and up away from the body.
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Shoulder surgery is a means of treating injured shoulders. Many surgeries have been developed to repair the muscles, connective tissue, or damaged joints that can arise from traumatic or overuse injuries to the shoulder.
Twin brothers who were born conjoined, sharing part of their sternum, diaphragm, abdominal wall and liver, recently celebrated their first birthday after undergoing successful separation surgery.
There is currently no "gold standard" surgery to repair acromioclavicular separations, and many surgeries have been created. However, this is one of the more common fixes. The original surgery is described as follows. Resection of the distal 2 cm of distal clavicle; Detaching the acromial end of the coracoacromial ligament, and possibly ...
The lateral end is also known as the acromial end. It is flat from above downward. It bears a facet that articulates with the shoulder to form the acromioclavicular joint. The area surrounding the joint gives an attachment to the joint capsule. The anterior border is concave forward and the posterior border is convex backward. [6]