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Acromion

The acromion is a bony projection located on the scapula or shoulder blade, which forms part of the shoulder joint. It is a flat, triangular-shaped bone that extends from the scapular spine to form the highest point of the shoulder.

The acromion plays an important role in shoulder function, as it provides attachment sites for several key muscles, ligaments, and tendons involved in arm and shoulder movement. These structures include the deltoid muscle, which is responsible for lifting the arm, and the coracoacromial ligament, which helps to stabilize the shoulder joint.

In some cases, abnormalities or injuries to the acromion can cause pain, weakness, and limited range of motion in the shoulder. One common condition that affects the acromion is called subacromial impingement, which occurs when the rotator cuff tendons or bursa become pinched or compressed between the acromion and the humeral head (upper arm bone). This can cause inflammation, pain, and weakness in the shoulder, and may require treatment with medications, physical therapy, or in severe cases, surgery.

Another condition that can affect the acromion is called acromioclavicular (AC) joint arthritis, which is a degenerative condition that causes inflammation and pain in the joint where the acromion meets the clavicle (collarbone). Treatment for AC joint arthritis may involve medications, physical therapy, or in some cases, surgery to remove the damaged joint surfaces and/or replace the joint with an implant.

Overall, the acromion is an important structure that plays a crucial role in shoulder function and mobility. Injuries or conditions affecting the acromion can have a significant impact on daily activities and quality of life, and may require prompt medical attention and treatment to prevent further damage and promote healing.

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