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  1. AC Joint (Acromioclavicular Joint): What It Is & Function

    Nov 6, 2024 · What is the AC joint? The AC joint is one of two joints that make up your shoulder. It’s where the acromion (the top part of your shoulder blade) meets your clavicle (collarbone). That’s …

  2. AC Joint Pain: Treating Symptoms That Won’t Go Away

    Oct 9, 2025 · There are several causes for AC joint pain, and treatment varies depending on what's making your shoulder hurt. The AC joint is where the acromion (the tip of your shoulder blade— …

  3. Acromioclavicular Joint - Physiopedia

    The Acromioclavicular Joint, or AC Joint, is one of four joints that comprises the Shoulder complex. The AC Joint is formed by the junction of the lateral clavicle and the acromion process of the scapula and …

  4. AC Joint Problems - Johns Hopkins Medicine

    The most common conditions of the acromioclavicular joint are arthritis, fractures and separations. Acromioclavicular joint wear and tear is common among weight lifters. Treatment for AC joint …

  5. AC Joint Injury: Symptoms & Treatment | Mass General Brigham

    What is the AC joint? The AC joint is where the collarbone (clavicle) meets the end of the shoulder blade (scapula), known as the acromion. The AC joint contains cartilage between the bones, which are …

  6. Acromioclavicular (AC) joint: Anatomy, function | Kenhub

    Nov 3, 2023 · 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 …

  7. Acromioclavicular Joint (AC joint) - Connecticut Orthopaedics

    The main cause of a shoulder separation or AC joint dislocation is a fall on the outer upper corner of the shoulder, as may occur in a tackle or a fall onto an outstretched hand. A fall from a height, and other …

  8. AC joint injuries - Mayo Clinic Orthopedics & Sports Medicine

    The AC joint is where the acromion (a part of the shoulder blade) connects to the clavicle (collar bone) at the top of the shoulder. This joint helps maintain the position of the shoulder and is very important for …

  9. Anatomy, Shoulder and Upper Limb, Acromioclavicular Joint

    Jul 24, 2023 · The acromioclavicular (AC) joint articulates the lateral end of the clavicle with the acromion as it projects anteriorly off the scapula. The AC joint provides stability and motion to the …

  10. AC Joint Shoulder Separation: Causes, Symptoms & Treatment | UPMC

    The AC joint connects your collarbone and shoulder blade. Learn more about the treatment options and recovery time for a separated shoulder.