Arthritis in the AC Joint

Many people aren’t aware of arthritis in this shoulder joint.


Pain and tenderness on the top of the shoulder that intensifies when you reach your arm across your body may be a sign of arthritis in the acromioclavicular (AC) joint, one of the two joints at the shoulder. While osteoarthritis more commonly affects the ball-and-socket joint where the upper arm bone sits in the shallow socket of the shoulder blade (glenohumeral joint), it also can occur in the AC joint.

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