Acromioclavicular Joint Arthritis
What is AC Joint Arthritis?
The acromioclavicular joint or AC joint is located at the top of your shoulder and is where your shoulder blade (scapula) meets the end of your collarbone (clavicle).
Arthritis occurs when the smooth glistening cartilage that lines the joint wears away.
AC Joint arthritis is not the same as shoulder arthritis. Doctors usually refer to glenohumeral joint arthritis as 'shoulder arthritis'.
Your glenohumeral joint is actually your shoulder joint. Your shoulder is where the end of your humerus (upper arm bone) called your humeral head meets the part of your shoulder blade (scapula) called your glenoid.