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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. 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 …

  4. 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 …

  5. 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 …

  6. 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 …

  7. 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 …

  8. AC (Acromioclavicular) Joint Injuries - Towson Orthopaedic Associates

    The acromioclavicular (AC) joint is located at the top of the shoulder where the collarbone (clavicle) meets the acromion, the highest point of the shoulder blade. This small but important joint plays a …

  9. Acromioclavicular (AC) Joint Repair - Complete Orthopedics

    The acromioclavicular (AC) joint connects the collarbone (clavicle) to the acromion of the shoulder blade. It plays a vital role in shoulder mobility. When this joint becomes injured—either from trauma, …

  10. What Is the AC Joint in the Shoulder? - Biology Insights

    Nov 28, 2025 · The acronym “AC” refers to the acromioclavicular joint, a small articulation located at the top of the shoulder. This joint connects the collarbone (clavicle) to the shoulder blade (scapula). It …