(Neumann 2010) With motion occuring in 3 planes, the ACJ lacks stability and relies on 3 major ligaments for support.

The specific part of the scapula adjacent to the clavicle is called the acromion, hence the name AC joint. It’s the most common type of arthritis found in the older population.

The acromioclavicular joint accounts for 40 % of scapular movement .

The acromioclavicular (AC) joint is the articulation between the two bones of pectoral girdle; the clavicle and scapula.It is a plane synovial joint, with flat articular surfaces which are approximately the same in size.. A variety of surgical techniques for high-grade ACJ separations have been described. Scapulothoracic motion occurs through combined SC and AC joint motions. . As the name suggests it is the articulation of the acromion of the scapula with the clavicle.

This is in contrast to the glenohumeral joint, the main “ball and socket” shoulder joint. Range of motion exercises with or without weights are very helpful in reducing pain and are discussed in this article. Loss of Use/Amputation of the Shoulder. A cartilage disk protects this joint. Common injuries of the acromioclavicular joint include separation, dislocation, and sprains. ACJ separation is a common shoulder injury.

These exercises for acromioclavicular joint pain work to strengthen the muscles surrounding the AC joint and providing more stability around the actual AC joint. On returning to contact sports, protect your shoulder by taping the joint.Add a circular piece of padding with a hole cut in the middle over the top of your shoulder for extra protection. The acromioclavicular, coracoacromial, and coracoclavicular ligaments hold the joint in place and help stabilize it. The shoulder joint moves the arm, and the scapula in the upper back moves the shoulder. A commonly used technique represents open reduction and fixation by a hook plate. An acromioclavicular (AC) joint injury is commonly referred to as “shoulder separation” and should not be confused with a shoulder dislocation.

Scapulothoracic motion occurs through combined SC and AC joint motions.11 The AC joint is a diarthrodial, planar joint comprised of the distal end of the clavicle articulating with the acromion process of the scapula, and may include a fibrocartilaginous disk.29 The angular motions of the AC This information provides a foundation for understanding normal acromioclavicular joint motion as a basis for further investigation of … An acromioclavicular joint separation, or AC separation, is a very frequent injury among physically active people.In this injury the clavicle (collar bone) separates from the scapula (shoulder blade). The AC (acromioclavicular) joint is a joint in the shoulder where the collarbone (clavicle) meets the shoulder blade (scapula). Introduction; Injuries to the acromioclavicular joint (AC) are not uncommon accounting for 9% of all shoulder injuries. While the clavicle rotates nearly 40–50°, only 8 % of the rotation passes the acromioclavicular joint. acromioclavicular (AC), and glenohumeral (GH) joints. The majority of motion is caused by the bones, not by the joint itself. Surgical management is the mai…

Acromioclavicular joint pain, or AC joint pain, can be reduced with specific exercises. Before returning to any type of sport following an AC joint injury you should have full pain-free range of motion. Returning to sport. The acromioclavicular joint is classified as a multiaxial synovial plane joint but it is more helpful to think of it as a pivot point. The shoulder is made up of two joints, the acromioclavicular (AC) joint and the glenohumeral joint.

The acromioclavicular joint differs anatomically and can be classified by the DePalma classification. The shoulder has two areas of movement. AC Joint Sprain (Acromioclavicular Joint Sprain) Acromioclavicular Joint. The shoulder girdle is composed of the sternoclavicular (SC), acromioclavicular (AC), and glenohumeral (GH) joints. The acromioclavicular ligament and coracoclavicular ligaments (conoid and trapezoid) support the joint and resist horizontal stresses and limit superior translation respectively. Acromioclavicular joint arthritis or AC joint arthritis can be painful and limit the range of motion in the shoulder. Acromioclavicular Joint / Motion.

Acromioclavicular (AC) joint separations are common injuries of the shoulder girdle, especially in the young and active population.

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