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). …
AC Joint Problems - Johns Hopkins Medicine
The acromioclavicular, or AC, joint is a joint in the shoulder where two bones meet. One of these bones is the collarbone, or clavicle. The second bone is actually part of the shoulder blade …
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 …
Acromioclavicular joint - Wikipedia
The acromioclavicular joint provides the ability to raise the arm above the head. This joint functions as a pivot point (although technically it is a gliding synovial joint), acting like a strut to …
Acromioclavicular osteoarthritis: Causes and treatment
Feb 16, 2023 · Acromioclavicular osteoarthritis is a common type of arthritis that affects the shoulder. It develops when the cartilage between the acromion and the collarbone wears down.
The Acromioclavicular Joint - Structure - Movement
Nov 6, 2025 · Written by Rosamond Nicolson and Jaspreet Johal. The acromioclavicular joint is an articulation in the shoulder region between the clavicle and the acromion of the scapula. It …
Acromioclavicular Joint Disorders - PM&R KnowledgeNow
Apr 10, 2025 · Acromioclavicular (AC) joint injury is a common yet underdiagnosed cause of shoulder pain. 1 Joint damage can occur due to a range of acute and chronic conditions with …
Acromioclavicular Joint Arthritis - Shoulder Education
Aug 3, 2025 · Acromioclavicular joint arthritis (AC joint arthritis) is a condition that affects the joint between the collarbone (clavicle) and the acromion (Figure 1), a part of the shoulder blade. …
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 …
Acromioclavicular (AC) Joint Injury (Shoulder Separation)
The acromioclavicular (AC) joint — along with ligaments — connects your collarbone and shoulder blade. An injury to to the AC joint is a shoulder separation.